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Cover Page - shares	6 Months Ended
Cover Page - shares	Jun. 30, 2020	Jul. 31, 2020
Document Information [Line Items]
Document Transition Report	false
Document Quarterly Report	true
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Address, Address Line One	811 Main Street
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Registrant Name	Crestwood Equity Partners LP
Entity File Number	001-34664
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	43-1918951
Entity Central Index Key	0001136352
Current Fiscal Year End Date	--12-31
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		73,161,478
Entity Address, Address Line Two	Suite 3400
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77002
City Area Code	832
Local Phone Number	519-2200
Crestwood Midstream Partners LP
Document Information [Line Items]
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Registrant Name	Crestwood Midstream Partners LP
Entity File Number	001-35377
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-1647837
Entity Central Index Key	0001304464
Current Fiscal Year End Date	--12-31
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		0
Common Units
Document Information [Line Items]
Title of 12(b) Security	Common Units representing limited partnership interests
Trading Symbol	CEQP
Security Exchange Name	NYSE
Preferred Units
Document Information [Line Items]
Title of 12(b) Security	Preferred Units representing limited partnership interests
Trading Symbol	CEQP-P
Security Exchange Name	NYSE

Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Assets
Cash	$ 6.7	$ 25.7
Accounts receivable, less allowance for doubtful accounts of $0.6 million and $0.3 million at June 30, 2020 and December 31, 2019	165.9	242.2
Inventory	88.9	53.7
Assets from price risk management activities	44.4	43.2
Prepaid expenses and other current assets	8.7	11.6
Total current assets	314.6	376.4
Property, plant and equipment	3,829.2	3,612.5
Less: accumulated depreciation	786.8	703.4
Property, plant and equipment, net	3,042.4	2,909.1
Intangible assets	1,118.1	1,076.3
Less: accumulated amortization	301.0	271.1
Intangible assets, net	817.1	805.2
Goodwill	138.6	218.9
Operating lease, right-of-use assets, net	44.2	53.8
Investments in unconsolidated affiliates	961.9	980.4
Other non-current assets	4.9	5.5
Total assets	5,323.7	5,349.3
Current liabilities:
Accounts payable	118.6	189.2
Accrued expenses and other liabilities	133.8	161.7
Liabilities from price risk management activities	32.2	6.7
Current portion of long-term debt	0.2	0.2
Total current liabilities	284.8	357.8
Long-term debt, less current portion	2,575.7	2,328.3
Other long-term liabilities	285.7	301.6
Deferred income taxes	2.3	2.6
Total liabilities	3,148.5	2,990.3
Commitments and contingencies (Note 11)
Interest of non-controlling partner in subsidiary	430.6	426.2
Partners’ capital:
Crestwood Equity Partners LP partners’ capital (73,605,008 and 72,282,942 common and subordinated units issued and outstanding at June 30, 2020 and December 31, 2019)	1,132.6	1,320.8
Preferred units (71,257,445 units issued and outstanding at both June 30, 2020 and December 31, 2019)	612.0	612.0
Total partners’ capital	1,744.6	1,932.8
Total liabilities and capital	5,323.7	5,349.3
Crestwood Midstream Partners LP
Assets
Cash	6.1	25.4
Accounts receivable, less allowance for doubtful accounts of $0.6 million and $0.3 million at June 30, 2020 and December 31, 2019	165.8	241.9
Inventory	88.9	53.7
Assets from price risk management activities	44.4	43.2
Prepaid expenses and other current assets	8.7	11.6
Total current assets	313.9	375.8
Property, plant and equipment	4,159.2	3,942.6
Less: accumulated depreciation	965.5	875.1
Property, plant and equipment, net	3,193.7	3,067.5
Intangible assets	1,118.1	1,076.3
Less: accumulated amortization	301.0	271.1
Intangible assets, net	817.1	805.2
Goodwill	138.6	218.9
Operating lease, right-of-use assets, net	44.2	53.8
Investments in unconsolidated affiliates	961.9	980.4
Other non-current assets	2.9	2.4
Total assets	5,472.3	5,504.0
Current liabilities:
Accounts payable	116.1	186.6
Accrued expenses and other liabilities	132.4	160.4
Liabilities from price risk management activities	32.2	6.7
Current portion of long-term debt	0.2	0.2
Total current liabilities	280.9	353.9
Long-term debt, less current portion	2,575.7	2,328.3
Other long-term liabilities	284.0	295.6
Deferred income taxes	0.6	0.7
Total liabilities	3,141.2	2,978.5
Interest of non-controlling partner in subsidiary	430.6
Partners’ capital:
Partners' capital	1,900.5	2,099.3
Interest of non-controlling partner in subsidiary (Note 10)		426.2
Total liabilities and capital	$ 5,472.3	$ 5,504.0

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Allowance for doubtful accounts	$ 0.6	$ 0.3
Limited Partners' Capital Account, Units Issued	73,605,008	72,282,942
Limited Partners' Capital Account, Units Outstanding	73,605,008	72,282,942
Preferred Units, Issued	71,257,445	71,257,445
Preferred Units, Outstanding	71,257,445	71,257,445
Crestwood Midstream Partners LP
Allowance for doubtful accounts	$ 0.6	$ 0.3

Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues:
Revenues	$ 352.7	$ 683.4	$ 1,080.6	$ 1,518.6
Costs of product/services sold (exclusive of items shown separately below):
Product costs - related party (Note 12)	3.6	0.9	6.8	35.3
Total costs of product/services sold	225.7	537.2	760.1	1,232.8
Operating expenses and other:
Operations and maintenance	31.6	34.7	69.2	63.3
General and administrative	29.5	22.3	44.4	59.5
Depreciation, amortization and accretion	61.0	49.3	117.1	89.1
Loss on long-lived assets, net	3.8	0.0	4.8	2.0
Goodwill impairment	0.0	0.0	80.3	0.0
Gain on acquisition	0.0	(209.4)	0.0	(209.4)
Total expenses	125.9	(103.1)	315.8	4.5
Operating income (loss)	1.1	249.3	4.7	281.3
Earnings from unconsolidated affiliates, net	8.4	3.7	13.9	10.6
Interest and debt expense, net	(34.0)	(27.8)	(66.6)	(52.7)
Other income, net	0.1	0.1	0.2	0.2
Income (loss) before income taxes	(24.4)	225.3	(47.8)	239.4
(Provision) benefit for income taxes	(0.1)	0.3	(0.1)	0.3
Net income (loss)	(24.3)	225.0	(47.7)	239.1
Net income attributable to non-controlling partner	10.2	10.6	20.1	14.6
Net income (loss) attributable to parent	(34.5)	214.4	(67.8)	224.5
Net income attributable to preferred unit holders	15.0	15.0	30.0	30.0
Net income (loss) attributable to partners	(49.5)	199.4	(97.8)	194.5
Subordinated unitholders’ interest in net income	0.0	1.2	0.0	1.2
Common unitholders’ interest in net income (loss)	$ (49.5)	$ 198.2	$ (97.8)	$ 193.3
Net income (loss) per limited partner unit:
Basic (in dollars per share)	$ (0.68)	$ 2.76	$ (1.34)	$ 2.69
Diluted (in dollars per share)	$ (0.68)	$ 2.58	$ (1.34)	$ 2.53
Weighted-average limited partners’ units outstanding:
Basic (units)	73.2	71.8	73.0	71.8
Dilutive units (units)	0.0	11.2	0.0	5.2
Diluted (units)	73.2	83.0	73.0	77.0
Crestwood Midstream Partners LP
Revenues:
Revenues	$ 352.7	$ 683.4	$ 1,080.6	$ 1,518.6
Related party (Note 12)	0.1	0.0	0.3	0.0
Costs of product/services sold (exclusive of items shown separately below):
Product costs - related party (Note 12)	3.6	0.9	6.8	35.3
Total costs of product/services sold	225.7	537.2	760.1	1,232.8
Operating expenses and other:
Operations and maintenance	31.6	34.7	69.2	63.3
General and administrative	28.4	20.9	41.9	56.9
Depreciation, amortization and accretion	64.6	52.7	124.2	96.1
Loss on long-lived assets, net	3.8	0.0	4.8	2.0
Goodwill impairment	0.0	0.0	80.3	0.0
Gain on acquisition	0.0	(209.4)	0.0	(209.4)
Total expenses	128.4	(101.1)	320.4	8.9
Operating income (loss)	(1.4)	247.3	0.1	276.9
Earnings from unconsolidated affiliates, net	8.4	3.7	13.9	10.6
Interest and debt expense, net	(34.0)	(27.8)	(66.6)	(52.7)
Income (loss) before income taxes	(27.0)	223.2	(52.6)	234.8
(Provision) benefit for income taxes	(0.2)	0.3	(0.2)	0.3
Net income (loss)	(26.8)	222.9	(52.4)	234.5
Net income attributable to non-controlling partner	10.2	10.6	20.1	14.6
Net income (loss) attributable to parent	(37.0)	212.3	(72.5)	219.9
Product
Revenues:
Revenues	258.4	579.6	864.9	1,327.2
Related party (Note 12)	7.4	1.3	14.7	2.5
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	217.4	529.5	742.0	1,183.0
Product \| Crestwood Midstream Partners LP
Revenues:
Revenues	258.4	579.6	864.9	1,327.2
Related party (Note 12)	7.4	1.3	14.7	2.5
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	217.4	529.5	742.0	1,183.0
Service
Revenues:
Revenues	94.3	103.8	215.7	191.4
Related party (Note 12)	0.1	0.0	0.3	0.0
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	4.7	6.8	11.3	14.5
Service \| Crestwood Midstream Partners LP
Revenues:
Revenues	94.3	103.8	215.7	191.4
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	4.7	6.8	11.3	14.5
Gathering and Processing Segment \| Product
Revenues:
Revenues	30.5	106.2	133.2	215.8
Gathering and Processing Segment \| Product \| Crestwood Midstream Partners LP
Revenues:
Revenues	30.5	106.2	133.2	215.8
Gathering and Processing Segment \| Service
Revenues:
Revenues	84.0	93.5	196.2	166.2
Gathering and Processing Segment \| Service \| Crestwood Midstream Partners LP
Revenues:
Revenues	84.0	93.5	196.2	166.2
Marketing Supply and Logistics
Revenues:
Revenues				1,123.9
Marketing Supply and Logistics \| Product
Revenues:
Revenues	220.5	472.1	717.0	1,108.9
Marketing Supply and Logistics \| Product \| Crestwood Midstream Partners LP
Revenues:
Revenues	220.5	472.1	717.0	1,108.9
Marketing Supply and Logistics \| Service
Revenues:
Revenues	7.1	5.4	12.6	12.5
Marketing Supply and Logistics \| Service \| Crestwood Midstream Partners LP
Revenues:
Revenues	7.1	5.4	12.6	12.5
Storage and Transportation \| Service
Revenues:
Revenues	3.1	4.9	6.6	12.7
Storage and Transportation \| Service \| Crestwood Midstream Partners LP
Revenues:
Revenues	$ 3.1	$ 4.9	$ 6.6	$ 12.7

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (24.3)	$ 225.0	$ (47.7)	$ 239.1
Change in fair value of Suburban Propane Partners, L.P. units	0.0	0.3	(1.1)	0.7
Comprehensive income (loss)	(24.3)	225.3	(48.8)	239.8
Comprehensive income attributable to non-controlling partner	10.2	10.6	20.1	14.6
Comprehensive income (loss) attributable to Crestwood Equity Partners LP	$ (34.5)	$ 214.7	$ (68.9)	$ 225.2

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References + Details

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References + Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

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+ Details

Consolidated Statement of Partners' Capital - USD ($) $ in Millions	Total	Preferred Units	Common unit	Non-Controlling Partners	Partners' Capital	Crestwood Midstream Partners LP	Crestwood Midstream Partners LP Common unit	Crestwood Midstream Partners LP Non-Controlling Partners	Crestwood Midstream Partners LP Partners' Capital	Preferred Units	Common Units	Subordinated Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											71,200,000	400,000
Preferred Units, Outstanding										71,300,000
Beginning balance at Dec. 31, 2018		$ 612.0	$ 1,240.5	$ 181.3	$ 2,033.8		$ 2,028.2	$ 181.3	$ 2,209.5
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15.0)	(43.1)	(3.3)	(61.4)		(57.8)	(3.3)	(61.1)
Unit-based compensation charges			17.3		17.3		17.3		17.3
Unit-based compensation charges (in shares)											900,000
Taxes paid for unit-based compensation vesting			(7.0)		(7.0)		(7.0)		(7.0)
Taxes paid for unit-based compensation vesting (in shares)											(200,000)
Change in fair value of Suburban Propane Partners, L.P. units			0.4		0.4
Other			(0.7)		(0.7)		(0.3)		(0.3)
Net income (loss)		15.0	(4.9)	4.0	14.1		7.6	4.0	11.6
Ending Balance at Mar. 31, 2019		612.0	1,202.5	182.0	1,996.5		1,988.0	182.0	2,170.0
Beginning balance at Dec. 31, 2018		612.0	1,240.5	181.3	2,033.8		2,028.2	181.3	2,209.5
Increase (Decrease) in Partners' Capital [Roll Forward]
Non-controlling interest reclassification (Note 10)	$ 178.8
Change in fair value of Suburban Propane Partners, L.P. units	0.7
Net income (loss)	239.1					$ 234.5
Ending Balance at Jun. 30, 2019		612.0	1,366.4	0.0	1,978.4		2,148.2	0.0	2,148.2
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											71,900,000	400,000
Preferred Units, Outstanding										71,300,000
Beginning balance at Mar. 31, 2019		612.0	1,202.5	182.0	1,996.5		1,988.0	182.0	2,170.0
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15.0)	(43.1)	(3.3)	(61.4)		(59.7)	(3.3)	(63.0)
Unit-based compensation charges			11.3		11.3		11.3		11.3
Taxes paid for unit-based compensation vesting			(3.6)		(3.6)		(3.6)		(3.6)
Non-controlling interest reclassification (Note 10)				(178.8)	(178.8)			(178.8)	(178.8)
Taxes paid for unit-based compensation vesting (in shares)											(100,000)
Change in fair value of Suburban Propane Partners, L.P. units	0.3		0.3		0.3
Other			(0.4)	0.1	(0.3)		(0.1)	0.1	0.0
Net income (loss)	$ 225.0	15.0	199.4	0.0	214.4	222.9	212.3	0.0	212.3
Ending Balance at Jun. 30, 2019		612.0	1,366.4	$ 0.0	1,978.4		$ 2,148.2	$ 0.0	2,148.2
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											71,800,000	400,000
Preferred Units, Outstanding										71,300,000
Common Unit, Outstanding											71,900,000	400,000
Preferred Units, Outstanding	71,257,445									71,300,000
Beginning balance at Dec. 31, 2019		612.0	1,320.8		1,932.8	2,099.3			2,099.3
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15.0)	(45.3)		(60.3)				(57.0)
Unit-based compensation charges			0.2		0.2				(4.4)
Unit-based compensation charges (in shares)											1,700,000
Taxes paid for unit-based compensation vesting			(15.1)		(15.1)				(15.1)
Taxes paid for unit-based compensation vesting (in shares)											(500,000)
Change in fair value of Suburban Propane Partners, L.P. units			(1.1)		(1.1)
Other			3.5		3.5				(1.1)
Net income (loss)		15.0	(48.3)		(33.3)				(35.5)
Ending Balance at Mar. 31, 2020		612.0	1,214.7		1,826.7				1,986.2
Beginning balance at Dec. 31, 2019		612.0	1,320.8		1,932.8	2,099.3			2,099.3
Increase (Decrease) in Partners' Capital [Roll Forward]
Change in fair value of Suburban Propane Partners, L.P. units	$ (1.1)
Net income (loss)	(47.7)					(52.4)
Ending Balance at Jun. 30, 2020		612.0	1,132.6		1,744.6	1,900.5			1,900.5
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											73,300,000	400,000
Preferred Units, Outstanding										71,300,000
Other (in shares)											200,000
Beginning balance at Mar. 31, 2020		612.0	1,214.7		1,826.7				1,986.2
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15.0)	(45.7)		(60.7)				(62.0)
Unit-based compensation charges			13.6		13.6				13.6
Unit-based compensation charges (in shares)											0
Taxes paid for unit-based compensation vesting			(0.4)		(0.4)				(0.4)
Taxes paid for unit-based compensation vesting (in shares)											(100,000)
Change in fair value of Suburban Propane Partners, L.P. units	0.0
Other			(0.1)		(0.1)				0.1
Net income (loss)	$ (24.3)	15.0	(49.5)		(34.5)	(26.8)			(37.0)
Ending Balance at Jun. 30, 2020		$ 612.0	$ 1,132.6		$ 1,744.6	$ 1,900.5			$ 1,900.5
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											73,200,000	400,000
Preferred Units, Outstanding	71,257,445									71,300,000
Other (in shares)											0

Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities
Net income (loss)	$ (47.7)	$ 239.1
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization and accretion	117.1	89.1
Amortization of debt-related deferred costs	3.2	2.9
Unit-based compensation charges	9.2	28.6
Loss on long-lived assets, net	4.8	2.0
Gain on acquisition	0.0	(209.4)
Goodwill impairment	80.3	0.0
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	5.4	6.3
Deferred income taxes	(0.3)	0.3
Changes in operating assets and liabilities	11.4	35.0
Net cash provided by operating activities	183.4	193.9
Investing activities
Acquisitions, net of cash acquired (Note 3)	162.3	462.1
Purchases of property, plant and equipment	(143.2)	(204.7)
Investments in unconsolidated affiliates	(6.0)	(40.9)
Capital distributions from unconsolidated affiliates	18.9	24.2
Other	(0.3)	(0.5)
Net cash used in investing activities	(292.9)	(684.0)
Financing activities
Proceeds from the issuance of long-term debt	742.5	1,544.0
Payments on long-term debt	(498.2)	(1,159.5)
Payments on finance leases	(1.6)	(1.9)
Payments for debt-related deferred costs	0.0	(9.0)
Net proceeds from issuance of non-controlling interest	2.8	235.0
Distributions to partners	(91.0)	(86.2)
Distributions to non-controlling partner	18.5	6.6
Distributions to preferred unitholders	30.0	30.0
Taxes paid for unit-based compensation vesting	(15.5)	(10.6)
Other	0.0	(0.2)
Net cash provided by financing activities	90.5	475.0
Net change in cash	(19.0)	(15.1)
Cash at beginning of period	25.7	17.2
Cash at end of period	6.7	2.1
Supplemental schedule of noncash investing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	35.9	(22.2)
Crestwood Midstream Partners LP
Operating activities
Net income (loss)	(52.4)	234.5
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization and accretion	124.2	96.1
Amortization of debt-related deferred costs	3.2	2.9
Unit-based compensation charges	9.2	28.6
Loss on long-lived assets, net	4.8	2.0
Gain on acquisition	0.0	(209.4)
Goodwill impairment	80.3	0.0
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	5.4	6.3
Deferred income taxes	(0.1)	0.2
Changes in operating assets and liabilities	6.5	33.9
Net cash provided by operating activities	181.1	195.1
Investing activities
Acquisitions, net of cash acquired (Note 3)	162.3	462.1
Purchases of property, plant and equipment	(143.2)	(204.7)
Investments in unconsolidated affiliates	(6.0)	(40.9)
Capital distributions from unconsolidated affiliates	18.9	24.2
Other	(0.3)	(0.5)
Net cash used in investing activities	(292.9)	(684.0)
Financing activities
Proceeds from the issuance of long-term debt	742.5	1,544.0
Payments on long-term debt	(498.2)	(1,159.5)
Payments on finance leases	(1.6)	(1.9)
Payments for debt-related deferred costs	0.0	(9.0)
Net proceeds from issuance of non-controlling interest	2.8	235.0
Distributions to partners	(119.0)	(117.5)
Distributions to non-controlling partner	18.5	6.6
Taxes paid for unit-based compensation vesting	(15.5)	(10.6)
Net cash provided by financing activities	92.5	473.9
Net change in cash	(19.3)	(15.0)
Cash at beginning of period	25.4	16.5
Cash at end of period	6.1	1.5
Supplemental schedule of noncash investing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	35.9	$ (22.2)
Non-Controlling Partners
Financing activities
Net proceeds from issuance of non-controlling interest	$ 2.8

Organization and Business Description	6 Months Ended
Organization and Business Description	Jun. 30, 2020
Disclosure Partnership Organization And Basis Of Presentation Narrative [Abstract]
Organization and Business Description	Organization and Business Description Organization The accompanying notes to the consolidated financial statements apply to Crestwood Equity Partners LP and Crestwood Midstream Partners LP, unless otherwise indicated. References in this report to “we,” “us,” “our,” “ours,” “our company,” the “partnership,” the “Company,” “Crestwood Equity,” “CEQP,” and similar terms refer to either Crestwood Equity Partners LP itself or Crestwood Equity Partners LP and its consolidated subsidiaries, as the context requires. Unless otherwise indicated, references to “Crestwood Midstream” and “CMLP” refer to Crestwood Midstream Partners LP and its consolidated subsidiaries. The accompanying consolidated financial statements and related notes should be read in conjunction with our 2019 Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC) on February 21, 2020. The financial information as of June 30, 2020, and for the three and six months ended June 30, 2020 and 2019, is unaudited. The consolidated balance sheets as of December 31, 2019, were derived from the audited balance sheets filed in our 2019 Annual Report on Form 10-K. Business Description Crestwood Equity is a publicly-traded Delaware limited partnership that develops, acquires, owns or controls, and operates primarily fee-based assets and operations within the energy midstream sector. We provide broad-ranging infrastructure solutions across the value chain to service premier liquids-rich natural gas and crude oil shale plays across the United States. We own and operate a diversified portfolio of crude oil and natural gas gathering, processing, storage and transportation assets that connect fundamental energy supply with energy demand across the United States. Crestwood Equity is a holding company and all of its consolidated operating assets are owned by or through its wholly-owned subsidiary, Crestwood Midstream, a Delaware limited partnership.

Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Basis of Presentation and Significant Accounting Policies

Basis of Presentation and Summary of Significant Accounting Policies

Basis of Presentation

Our consolidated financial statements are prepared in accordance with Generally Accepted Accounting Principles (GAAP) and include the accounts of all consolidated subsidiaries after the elimination of all intercompany accounts and transactions. In management’s opinion, all necessary adjustments to fairly present our results of operations, financial position and cash flows for the periods presented have been made and all such adjustments are of a normal and recurring nature. Certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with GAAP have been omitted pursuant to the rules and regulations of the SEC.

Significant Accounting Policies

There were no material changes in our significant accounting policies from those described in our 2019 Annual Report on Form 10-K. Below is an update of our accounting policies related to Goodwill and Accounts Receivable.

Goodwill

Our goodwill represents the excess of the amount we paid for a business over the fair value of the net identifiable assets acquired. We evaluate goodwill for impairment annually on December 31, and whenever events indicate that it is more likely than not that the fair value of a reporting unit could be less than its carrying amount. This evaluation requires us to compare the fair value of each of our reporting units to its carrying value (including goodwill). If the fair value exceeds the carrying amount, goodwill of the reporting unit is not considered impaired.

We estimate the fair value of our reporting units based on a number of factors, including discount rates, projected cash flows and the potential value we would receive if we sold the reporting unit. Estimating projected cash flows requires us to make

certain assumptions as it relates to the future operating performance of each of our reporting units (which includes assumptions, among others, about estimating future operating margins and related future growth in those margins, contracting efforts and the cost and timing of facility expansions) and assumptions related to our customers, such as their future capital and operating plans and their financial condition. When considering operating performance, various factors are considered such as current and changing economic conditions and the commodity price environment, among others. Due to the imprecise nature of these projections and assumptions, actual results can and often do, differ from our estimates. If the assumptions embodied in the projections prove inaccurate, we could incur a future impairment charge. In addition, the use of the income approach to determine the fair value of our reporting units (see further discussion of the use of the income approach below) could result in a different fair value if we had utilized a market approach, or a combination thereof.

The following table summarizes the goodwill of our various reporting units (in millions):



			Impairment during the six months ended
	December 31, 2019		June 30, 2020		June 30, 2020
Gathering and Processing
Arrow	$	45.9	$	—	$	45.9
Powder River Basin	80.3		80.3		—
Marketing, Supply and Logistics
NGL Marketing and Logistics	92.7		—		92.7
Total	$	218.9	$	80.3	$	138.6

During the first quarter of 2020, current and forward commodity prices significantly declined from their levels at December 31, 2019 due primarily to the decreases in energy demand as a result of the outbreak of the COVID-19 pandemic and actions taken by the Organization of the Petroleum Exporting Countries, Russia, the United States and other oil-producing countries relating to the oversupply of oil. We currently anticipate that the decrease in commodity prices will have a negative impact on certain of our customers in our gathering and processing segment, which could adversely impact the financial performance of certain of the reporting units within those operations.

Upon acquisition, we are required to record the assets, liabilities and goodwill of a reporting unit at its fair value on the date of acquisition. As a result, any level of decrease in the forecasted cash flows of these businesses or increases in the discount rates utilized to value those businesses from their respective acquisition dates would likely result in the fair value of the reporting unit falling below the carrying value of the reporting unit, and could result in an assessment of whether that reporting unit's goodwill is impaired.

We acquired our Powder River Basin reporting unit in 2019 and recorded it at fair value at that time. Based on the events that occurred during the first quarter of 2020 described above, we determined that the forecasted cash flows, and therefore the fair value, of our Powder River Basin reporting unit significantly decreased during the first quarter of 2020, and accordingly performed a quantitative impairment assessment of the goodwill related to that reporting unit during that period. Based on our quantitative assessment, which utilized the income approach, we determined that the goodwill associated with the Powder River Basin reporting unit should be fully impaired during the first quarter of 2020, and accordingly recorded an $80.3 million impairment of the goodwill attributed to that reporting unit during the first quarter of 2020. We did not record any impairments of the goodwill associated with our Arrow or NGL Marketing and Logistics reporting units during the six months ended June 30, 2020, as we do not have indicators that it is more likely than not that the fair value of those reporting units has declined to below their carrying value at June 30, 2020.

Accounts Receivable

Effective January 1, 2020, we adopted the provision of Accounting Standards Update 2016-13, Financial Instruments - Credit Losses (Topic 326), which provides revised guidance on evaluating accounts and notes receivable and other financial instruments for impairment. We record accounts receivable when products or services are delivered and it is probable that payment will be received for those products or services, and we do not record any interest or penalties on accounts receivable that are past due under the terms of the related arrangement or invoice until those amounts are received. Topic 326 requires companies to evaluate their financial instruments for impairment by recording an allowance for doubtful accounts and/or bad debt expense based on certain categories of instruments rather than a specific identification approach. We adopted the

provisions of this standard using a method to estimate the allowance for doubtful accounts that considered both the aging of our accounts receivable and the projected loss rate of our receivables. We write off accounts receivable, and the related allowance for doubtful accounts, when it becomes remote that payment for products or services will be received. On January 1, 2020, we recorded a $0.7 million increase to our allowance for doubtful accounts and a $0.7 million decrease to partners’ capital to reflect the cumulative effect of adopting the new standard. In addition, on January 1, 2020, Crestwood Permian Basin Holdings LLC (Crestwood Permian), our 50% equity investment, also adopted the provisions of Topic 326 and we recorded a decrease of approximately $0.2 million to our equity investment and a corresponding decrease to our partners’ capital to reflect our proportionate share of the cumulative effect of accounting change recorded by the equity investment related to the new standard. The adoption of this standard was not material to our other equity investments.

Acquisitions	6 Months Ended
Acquisitions	Jun. 30, 2020
Business Combinations [Abstract]
Acquisitions	Acquisitions NGL Asset Acquisition In April 2020, we acquired several NGL storage and rail-to-truck liquid petroleum gas (LPG) terminals from Plains All American Pipeline, L.P. (Plains) for approximately $162 million. The acquired assets include 7 MMBbls of NGL storage and seven LPG terminals, and resulted in an increase of approximately $160 million in our property, plant and equipment and intangible assets and an increase of approximately $2 million to our other assets and liabilities, net during the three months ended June 30, 2020. We allocated the purchase price to these assets and liabilities based on their fair values, which are Level 3 fair value measurements and were developed by management with the assistance of a third-party valuation firm utilizing market-related information about the property, plant and equipment and customer relationships acquired. These assets are included in our marketing, supply and logistics segment. The transaction costs related to this acquisition were not material for the three and six months ended June 30, 2020. Jackalope Acquisition On April 9, 2019, Crestwood Niobrara LLC (Crestwood Niobrara), our consolidated subsidiary, acquired Williams Partners LP’s (Williams) 50% equity interest in Jackalope Gas Gathering Services, L.L.C. (Jackalope) for approximately $484.6 million (Jackalope Acquisition). The acquisition was funded through a combination of borrowings under the CMLP credit facility and the issuance of $235 million of new preferred units to CN Jackalope Holdings LLC (Jackalope Holdings) (see Note 10 for a further discussion of the issuance of the new preferred units). Prior to the Jackalope Acquisition, Crestwood Niobrara owned a 50% equity interest in Jackalope, which we accounted for under the equity method of accounting. As a result of this transaction, Crestwood Niobrara controls and owns 100% of the equity interests in Jackalope. The financial results of Jackalope are included in our gathering and processing segment from the date of the acquisition. The fair value of the assets acquired and liabilities assumed in the Jackalope Acquisition exceeded the sum of the cash consideration paid and the historical book value of our 50% equity interest in Jackalope (which was remeasured at fair value and derecognized) and, as a result, we recognized a gain of approximately $209.4 million. This gain is included in gain on acquisition in our consolidated statements of operations.

Certain Balance Sheet Information

6 Months Ended

Jun. 30, 2020

Balance Sheet Related Disclosures [Abstract]

Certain Balance Sheet Information

Accrued Expenses and Other Liabilities

Accrued expenses and other liabilities consisted of the following (in millions):



	CEQP				CMLP
	June 30,		December 31,		June 30,		December 31,
	2020		2019		2020		2019
Accrued expenses	$	35.1	$	61.6	$	33.7	$	60.3
Accrued property taxes	8.2		6.1		8.2		6.1
Income tax payable	0.3		0.3		0.3		0.3
Interest payable	25.0		25.6		25.0		25.6
Accrued additions to property, plant and equipment	14.9		38.0		14.9		38.0
Contingent consideration	19.0		—		19.0		—
Operating leases	17.8		18.1		17.8		18.1
Finance leases	3.3		3.2		3.3		3.2
Deferred revenue	10.2		8.8		10.2		8.8
Total accrued expenses and other liabilities	$	133.8	$	161.7	$	132.4	$	160.4

Other Long-Term Liabilities

Other long-term liabilities consisted of the following (in millions):



	CEQP				CMLP
	June 30,		December 31,		June 30,		December 31,
	2020		2019		2020		2019
Contract liabilities	$	159.6	$	144.7	$	159.6	$	144.7
Contingent consideration	38.0		57.0		38.0		57.0
Operating leases	32.9		41.5		32.9		41.5
Asset retirement obligations	34.6		33.3		34.6		33.3
Other	20.6		25.1		18.9		19.1
Total other long-term liabilities	$	285.7	$	301.6	$	284.0	$	295.6

Investments in Unconsolidated Affiliates

6 Months Ended

Jun. 30, 2020

Equity Method Investments and Joint Ventures [Abstract]

Investments in Unconsolidated Affiliates

Variable Interest Entity

Crestwood Permian is a joint venture owned by Crestwood Infrastructure Holdings LLC (Crestwood Infrastructure), our wholly-owned subsidiary, and an affiliate of First Reserve Management, L.P. (First Reserve). We manage and account for our 50% ownership interest in Crestwood Permian, which is a variable interest entity, under the equity method of accounting as we exercise significant influence, but do not control Crestwood Permian and we are not its primary beneficiary due to First Reserve’s rights to exercise control over the entity.

Net Investments and Earnings

Our net investments in and earnings from our unconsolidated affiliates are as follows (in millions):



	Investment				Earnings (Loss) from Unconsolidated Affiliates						Earnings (Loss) from Unconsolidated Affiliates
	June 30,		December 31,		Three Months Ended June 30,						Six Months Ended June 30,
	2020		2019		2020			2019			2020			2019
Stagecoach Gas Services LLC⁽¹⁾	$	802.8	$	814.4	$	9.2		$	6.4		$	18.4		$	13.4
Crestwood Permian Basin Holdings LLC⁽²⁾	114.7		121.8		(1.0		)	(3.3		)	(0.2		)	(6.7		)
Tres Palacios Holdings LLC⁽³⁾	40.6		35.9		0.1			0.1			0.1			0.3
Powder River Basin Industrial Complex, LLC⁽⁴⁾	3.8		8.3		0.1			—			(4.4		)	(0.1		)
Jackalope Gas Gathering Services, L.L.C.⁽⁵⁾	—		—		—			0.5			—			3.7
Total	$	961.9	$	980.4	$	8.4		$	3.7		$	13.9		$	10.6


(1)	As of June 30, 2020, our equity in the underlying net assets of Stagecoach Gas Services LLC (Stagecoach Gas) exceeded our investment balance by approximately $51.3 million. This excess amount is entirely attributable to goodwill and, as such, is not subject to amortization. Our Stagecoach Gas investment is included in our storage and transportation segment.


(2)	As of June 30, 2020, our equity in the underlying net assets of Crestwood Permian exceeded our investment balance by $9.7 million, and this excess amount is not subject to amortization. Our Crestwood Permian investment is included in our gathering and processing segment.


(3)	As of June 30, 2020, our equity in the underlying net assets of Tres Palacios Holdings LLC (Tres Holdings) exceeded our investment balance by approximately $23.4 million. Our Tres Holdings investment is included in our storage and transportation segment.

(4)

As of June 30, 2020, our equity in the underlying net assets of Powder River Basin Industrial Complex, LLC (PRBIC) approximates our investment balance. During the first quarter of 2020, we recorded our share of a long-lived asset impairment recorded by our PRBIC equity investment, which eliminated our $5.5 million historical basis difference between our investment balance and the equity in the underlying net assets of PRBIC, and also resulted in a $4.5 million reduction in our earnings from unconsolidated affiliates during the six months ended June 30, 2020. Our PRBIC investment is included in our storage and transportation segment.

(5)

On April 9, 2019, Crestwood Niobrara acquired Williams 50% equity interest in Jackalope, and as a result, Crestwood Niobrara controls and owns 100% of the equity interests in Jackalope. As a result of this transaction, we eliminated our historical equity investment in Jackalope and began consolidating Jackalope’s operations. Our Jackalope investment was included in our gathering and processing segment.

Summarized Financial Information of Unconsolidated Affiliates

Below is the summarized operating results for our significant unconsolidated affiliates (in millions; amounts represent 100% of unconsolidated affiliate information):



	Six Months Ended June 30,
	2020							2019
	Operating Revenues		Operating Expenses		Net Income (Loss)			Operating Revenues		Operating Expenses		Net Income (Loss)
Stagecoach Gas	$	75.6	$	38.9	$	36.8		$	79.1	$	40.4	$	38.9
Other⁽¹⁾	53.5		76.1		(21.6		)	55.4		62.2		(7.9		)
Total	$	129.1	$	115.0	$	15.2		$	134.5	$	102.6	$	31.0

(1)

Includes our Crestwood Permian, Tres Holdings and PRBIC equity investments during the six months ended June 30, 2020 and 2019, and our Jackalope equity investment during the six months ended June 30, 2019 (prior to the acquisition of the remaining 50% equity interest from Williams in April 2019). We amortize the excess basis in certain of our equity investments as an increase in our earnings from unconsolidated affiliates. We recorded amortization of the excess basis in our Tres Holdings equity investment of $0.6 million during both the six months ended June 30, 2020 and 2019. We recorded amortization of the excess basis in our PRBIC equity investment of $0.2 million during the six months ended June 30, 2019. We recorded amortization of the excess basis in the Jackalope equity investment of less than $0.1 million during the six months ended June 30, 2019.

Distributions and Contributions

The following table summarizes our distributions from and contributions to our unconsolidated affiliates (in millions):



	Distributions⁽¹⁾				Contributions
	Six Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Stagecoach Gas	$	30.0	$	25.4	$	—	$	—
Crestwood Permian	6.7		2.9		—		10.0
Tres Holdings	1.4		1.2		6.0		6.3
PRBIC	0.1		—		—		0.2
Jackalope	—		11.6		—		24.4
Total	$	38.2	$	41.1	$	6.0	$	40.9


(1)	In July 2020, we received cash distributions from Stagecoach Gas, Crestwood Permian and Tres Holdings of approximately $14.5 million, $1.8 million and $3.0 million, respectively.

Other

Contingent Consideration. Pursuant to the Stagecoach Gas limited liability company agreement, we may be required to make payments of up to $57 million to Con Edison Gas Pipeline and Storage Northeast, LLC after December 31, 2020 if certain criteria are not met by Stagecoach Gas by December 31, 2020, including achieving certain performance targets on growth capital projects. These growth capital projects depend on the construction of third-party expansion projects, and those third-party projects experienced regulatory and other delays that caused Stagecoach Gas to delay its growth capital projects. As a result, our consolidated balance sheet at June 30, 2020 reflects a $19 million current liability included in accrued expenses and other liabilities and a $38 million other long-term liability related to the anticipated settlement of this obligation.

Guarantee. CEQP issued a guarantee under which CEQP would be required to pay up to $10 million if Crestwood Permian fails to honor its obligations to Crestwood Permian Basin LLC, a 50% equity investment of Crestwood Permian, in the event Crestwood Permian Basin LLC fails to satisfy its obligations under its gas gathering agreement. We do not believe that it is probable that this guarantee will result in future losses based on our assessment of the nature of the guarantee, the financial condition of the guaranteed party and the period of time that the guarantee has been outstanding, and as a result, we have not recorded a liability on our consolidated balance sheets at June 30, 2020 and December 31, 2019.

Risk Management

6 Months Ended

Jun. 30, 2020

Risk Management - Notional Amounts and Terms of Companys Derivative Financial Instruments [Abstract]

Risk Management

We are exposed to certain market risks related to our ongoing business operations. These risks include exposure to changing commodity prices. We utilize derivative instruments to manage our exposure to fluctuations in commodity prices, which is discussed below. Additional information related to our derivatives is discussed in Note 7.

Commodity Derivative Instruments and Price Risk Management

Risk Management Activities

We sell NGLs (such as propane, ethane, butane and heating oil), crude oil and natural gas to energy-related businesses and may use a variety of financial and other instruments including forward contracts involving physical delivery of NGLs, crude oil and natural gas. We periodically enter into offsetting positions to economically hedge against the exposure our customer contracts create. Certain of these contracts and positions are derivative instruments. We do not designate any of our commodity-based derivatives as hedging instruments for accounting purposes. Our commodity-based derivatives are reflected at fair value in our consolidated balance sheets, and changes in the fair value of these derivatives that impact the consolidated statements of operations are reflected in costs of product/services sold. Our commodity-based derivatives that are settled with physical commodities are reflected as an increase to product revenues, and the commodity inventory that is utilized to satisfy those physical obligations is reflected as an increase to costs of product sold in our consolidated statements of operations. The following table summarizes the impact to our consolidated statements of operations related to our commodity-based derivatives reflected in operating revenues and costs of product/services sold during the three and six months ended June 30, 2020 and 2019 (in millions):



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Product revenues	$	18.0	$	40.2	$	93.0	$	144.3
Gain reflected in costs of product/services sold	$	6.8	$	9.9	$	28.8	$	7.0

We attempt to balance our contractual portfolio in terms of notional amounts and timing of performance and delivery obligations. This balance in the contractual portfolio significantly reduces the volatility in costs of product/services sold related to these instruments.

Commodity Price and Credit Risk

Notional Amounts and Terms

The notional amounts and terms of our derivative financial instruments include the following:



	June 30, 2020		December 31, 2019
	Fixed Price Payor	Fixed Price Receiver	Fixed Price Payor	Fixed Price Receiver
Propane, ethane, butane, heating oil and crude oil (MMBbls)	64.4	69.8	33.5	36.6
Natural gas (Bcf)	10.2	17.5	3.7	8.7

Notional amounts reflect the volume of transactions, but do not represent the amounts exchanged by the parties to the financial instruments. Accordingly, notional amounts do not reflect our monetary exposure to market or credit risks. All contracts subject to price risk had a maturity of 37 months or less; however, 83% of the contracted volumes will be delivered or settled within 12 months.

Credit Risk

Inherent in our contractual portfolio are certain credit risks. Credit risk is the risk of loss from nonperformance by suppliers, customers or financial counterparties to a contract. We take an active role in managing credit risk and have established control procedures, which are reviewed on an ongoing basis. For example, in June 2020, Chesapeake Energy Corporation (Chesapeake), our major customer in the Powder River Basin, filed for protection under Chapter 11 of the U.S. Bankruptcy Code and in July 2020, Bruin E&P Partners, LLC (Bruin), our major customer in the Bakken also filed for protection under Chapter 11 of the U.S. Bankruptcy Code. Chesapeake and Bruin were current on all amounts due to us as of June 30, 2020 and we obtained letters of credit from Chesapeake to provide additional cash flow protection related to their credit risk. We attempt to minimize credit risk exposure through credit policies and periodic monitoring procedures as well as through customer deposits, letters of credit and entering into netting agreements that allow for offsetting counterparty receivable and payable balances for certain financial transactions, as deemed appropriate. The counterparties associated with our price risk management activities are energy marketers and propane retailers, resellers and dealers.

Certain of our derivative instruments have credit limits that require us to post collateral. The amount of collateral required to be posted is a function of the net liability position of the derivative as well as our established credit limit with the respective counterparty. If our credit rating were to change, the counterparties could require us to post additional collateral. The amount of additional collateral that would be required to be posted would vary depending on the extent of change in our credit rating as well as the requirements of the individual counterparty. In addition, we have margin requirements with a New York Mercantile Exchange (NYMEX) broker related to our net asset or liability position with such broker. All collateral amounts have been netted against the asset or liability with the respective counterparty and are reflected in our consolidated balance sheets as assets and liabilities from price risk management activities.

The following table presents the fair value of our commodity derivative instruments with credit-risk related contingent features and their associated collateral (in millions):



	June 30, 2020		December 31, 2019
Aggregate fair value of derivative instruments with credit-risk-related contingent features⁽¹⁾	$	20.3	$	1.6
NYMEX-related net derivative asset (liability) position	$	1.9	$	(28.8	)
NYMEX-related cash collateral posted	$	26.8	$	40.4
Cash collateral received, net	$	21.1	$	16.9

(1)

At June 30, 2020 and December 31, 2019, we posted less than $0.1 million of collateral associated with these derivatives.

Fair Value Measurements

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurements

The accounting standard for fair value measurement establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The three levels of the fair value hierarchy are as follows:

•

Level 1—Quoted prices are available in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis. Level 1 primarily consists of financial instruments such as exchange-traded derivatives, listed equities and US government treasury securities.

•

Level 2—Pricing inputs are other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reporting date. Level 2 includes those financial instruments that are valued using models or other valuation methodologies. These models are primarily industry-standard models that consider various assumptions, including quoted forward prices for commodities, time value, volatility factors, and current market and contractual prices for the underlying instruments, as well as other relevant economic measures. Substantially all of these assumptions are observable in the marketplace throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace. Instruments in this category include non-exchange-traded derivatives such as over the counter (OTC) forwards, options and physical exchanges.


•	Level 3—Pricing inputs include significant inputs that are generally less observable from objective sources. These inputs may be used with internally developed methodologies that result in management’s best estimate of fair value.

Cash, Accounts Receivable and Accounts Payable

As of June 30, 2020 and December 31, 2019, the carrying amounts of cash, accounts receivable and accounts payable approximate fair value based on the short-term nature of these instruments.

Credit Facility

The fair value of the amounts outstanding under our Crestwood Midstream credit facility approximates the carrying amounts as of June 30, 2020 and December 31, 2019, due primarily to the variable nature of the interest rate of the instrument, which is considered a Level 2 fair value measurement.

Senior Notes

We estimate the fair value of our senior notes primarily based on quoted market prices for the same or similar issuances (representing a Level 2 fair value measurement). The following table represents the carrying amount (reduced for deferred financing costs associated with the respective notes) and fair value of our senior notes (in millions):



	June 30, 2020				December 31, 2019
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
2023 Senior Notes	$	695.9	$	623.0	$	695.1	$	714.0
2025 Senior Notes	$	495.0	$	435.0	$	494.4	$	514.4
2027 Senior Notes	$	592.6	$	499.2	$	592.1	$	610.1

Financial Assets and Liabilities

As of June 30, 2020 and December 31, 2019, we held certain assets and liabilities that are required to be measured at fair value on a recurring basis, which include our derivative instruments related to heating oil, crude oil, NGLs and natural gas. Our derivative instruments consist of forwards, swaps, futures, physical exchanges and options.

Our derivative instruments that are traded on the NYMEX have been categorized as Level 1.

Our derivative instruments also include OTC contracts, which are not traded on a public exchange. The fair values of these derivative instruments are determined based on inputs that are readily available in public markets or can be derived from information available in publicly quoted markets. These instruments have been categorized as Level 2.

Our OTC options are valued based on the Black Scholes option pricing model that considers time value and volatility of the underlying commodity. The inputs utilized in the model are based on publicly available information as well as broker quotes. These options have been categorized as Level 2.

Our financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the valuation of fair value assets and liabilities and their placement within the fair value hierarchy levels.

The following tables set forth by level within the fair value hierarchy, our financial instruments that were accounted for at fair value on a recurring basis at June 30, 2020 and December 31, 2019 (in millions):



	June 30, 2020
	Level 1		Level 2		Level 3		Gross Fair Value		Contract Netting⁽¹⁾			Collateral/Margin Received or Paid		Fair Value
Assets
Assets from price risk management	$	26.2	$	187.8	$	—	$	214.0	$	(186.3	)	$	16.7	$	44.4
Suburban Propane Partners, L.P. units⁽²⁾	2.0		—		—		2.0		—			—		2.0
Total assets at fair value	$	28.2	$	187.8	$	—	$	216.0	$	(186.3	)	$	16.7	$	46.4

Liabilities
Liabilities from price risk management	$	29.7	$	177.8	$	—	$	207.5	$	(186.3	)	$	11.0	$	32.2
Total liabilities at fair value	$	29.7	$	177.8	$	—	$	207.5	$	(186.3	)	$	11.0	$	32.2



	December 31, 2019
	Level 1		Level 2		Level 3		Gross Fair Value		Contract Netting⁽¹⁾			Collateral/Margin Received or Paid			Fair Value
Assets
Assets from price risk management	$	3.7	$	164.0	$	—	$	167.7	$	(122.3	)	$	(2.2	)	$	43.2
Suburban Propane Partners, L.P. units⁽²⁾	3.1		—		—		3.1		—			—			3.1
Total assets at fair value	$	6.8	$	164.0	$	—	$	170.8	$	(122.3	)	$	(2.2	)	$	46.3

Liabilities
Liabilities from price risk management	$	2.8	$	151.9	$	—	$	154.7	$	(122.3	)	$	(25.7	)	$	6.7
Total liabilities at fair value	$	2.8	$	151.9	$	—	$	154.7	$	(122.3	)	$	(25.7	)	$	6.7


(1)	Amounts represent the impact of legally enforceable master netting agreements that allow us to settle positive and negative positions.

(2)

Amount is reflected in other assets on CEQP’s consolidated balance sheets.

Long-Term Debt

6 Months Ended

Jun. 30, 2020

Text Block [Abstract]

Long-Term Debt

Long-term debt consisted of the following at June 30, 2020 and December 31, 2019 (in millions):



	June 30, 2020		December 31, 2019
Credit Facility	$	801.2	$	557.0
2023 Senior Notes	700.0		700.0
2025 Senior Notes	500.0		500.0
2027 Senior Notes	600.0		600.0
Other	0.6		0.6
Less: deferred financing costs, net	25.9		29.1
Total debt	2,575.9		2,328.5
Less: current portion	0.2		0.2
Total long-term debt, less current portion	$	2,575.7	$	2,328.3

Credit Facility

At June 30, 2020, Crestwood Midstream had $424.9 million of available capacity under its credit facility considering the most restrictive debt covenants in its credit agreement. At June 30, 2020 and December 31, 2019, Crestwood Midstream’s outstanding standby letters of credit were $23.9 million and $31.7 million. Borrowings under the credit facility accrue interest at prime or Eurodollar based rates plus applicable spreads, which resulted in interest rates between 2.43% and 4.50% at June 30, 2020 and 3.96% and 6.00% at December 31, 2019. The weighted-average interest rate on outstanding borrowings as of June 30, 2020 and December 31, 2019 was 2.44% and 4.00%.

Crestwood Midstream is required under its credit agreement to maintain a net debt to consolidated EBITDA ratio (as defined in its credit agreement) of not more than 5.50 to 1.0, a consolidated EBITDA to consolidated interest expense ratio (as defined in its credit agreement) of not less than 2.50 to 1.0, and a senior secured leverage ratio (as defined in its credit agreement) of not more than 3.75 to 1.0. At June 30, 2020, the net debt to consolidated EBITDA ratio was approximately 4.16 to 1.0, the consolidated EBITDA to consolidated interest expense ratio was approximately 4.62 to 1.0, and the senior secured leverage ratio was 1.28 to 1.0.

Senior Notes

In April 2019, Crestwood Midstream issued $600 million of 5.625% unsecured senior notes due 2027 (the 2027 Senior Notes). The 2027 Senior Notes mature on May 1, 2027, and interest is payable semi-annually in arrears on May 1 and November 1 of each year, beginning on November 1, 2019. The net proceeds from this offering of approximately $591.1 million were used to

repay a portion of the outstanding borrowings under our credit facility, which included approximately $250 million which was used to fund the acquisition of the remaining 50% equity interest in Jackalope.

Earnings Per Limited Partner Unit

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Earnings Per Limited Partner Unit

Our net income (loss) attributable to Crestwood Equity Partners is allocated to the subordinated and limited partner unitholders based on their ownership percentage after giving effect to net income attributable to the preferred units. We calculate basic net income per limited partner unit using the two-class method. Diluted net income per limited partner unit is computed using the treasury stock method, which considers the impact to net income attributable to Crestwood Equity Partners and limited partner units from the potential issuance of limited partner units.

We exclude potentially dilutive securities from the determination of diluted earnings per unit (as well as their related income statement impacts) when their impact on net income attributable to Crestwood Equity Partners per limited partner unit is anti-dilutive. The following table summarizes information regarding the weighted-average of common units excluded during the three and six months ended June 30, 2020 and 2019 (in millions):



	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2020	2019	2020	2019
Preferred units ⁽¹⁾	7.1	—	7.1	7.1
Crestwood Niobrara’s preferred units⁽¹⁾	8.2	—	8.2	—
Unit-based compensation performance units⁽¹⁾	0.2	—	0.3	—
Subordinated units⁽¹⁾	0.4	—	0.4	—


(1)	For additional information regarding the potential conversion/redemption of our preferred units and Crestwood Niobrara’s preferred units to CEQP common units, and of our performance units and subordinated units, see our 2019 Annual Report on Form 10-K.

The table below shows CEQP’s net income per limited partner unit based on the number of basic and diluted limited partner units outstanding for the three and six months ended June 30, 2020 and 2019 (in millions, except for per unit data):



	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2020			2019		2020			2019
Common unitholders’ interest in net income (loss)	$	(49.5	)	$	198.2	$	(97.8	)	$	193.3
Dilutive effect of net income attributable to preferred units	—			15.0		—			—
Dilutive effect of net income attributable to subordinated units	—			1.2		—			1.2
Diluted net income (loss)	$	(49.5	)	$	214.4	$	(97.8	)	$	194.5

Weighted-average limited partners’ units outstanding - basic	73.2			71.8		73.0			71.8
Dilutive effect of preferred units	—			7.1		—			—
Dilutive effect of Crestwood Niobrara preferred units	—			3.4		—			4.5
Dilutive effect of stock-based compensation performance units	—			0.3		—			0.3
Dilutive effect of subordinated units	—			0.4		—			0.4
Weighted-average limited partners’ units outstanding - diluted	73.2			83.0		73.0			77.0

Basic earnings per unit:
Net income (loss) per limited partner unit	$	(0.68	)	$	2.76	$	(1.34	)	$	2.69
Diluted earnings per unit:
Net income (loss) per limited partner unit	$	(0.68	)	$	2.58	$	(1.34	)	$	2.53

Partners' Capital

6 Months Ended

Jun. 30, 2020

Statement of Partners' Capital [Abstract]

Partners' Capital

Partners’ Capital

Common Units

Effective April 1, 2020, we suspended the equity distribution program with certain financial institutions under which we were allowed to offer and sell, from time to time through one or more of these financial institutions, common units having an aggregate offering price of up to $250 million. We did not issue any common units under this program during the six months ended June 30, 2020 and 2019.

Distributions

Crestwood Equity

Limited Partners. A summary of CEQP’s limited partner quarterly cash distributions for the six months ended June 30, 2020 and 2019 is presented below:



Record Date	Payment Date	Per Unit Rate		Cash Distributions (in millions)
2020
February 7, 2020	February 14, 2020	$	0.625	$	45.3
May 8, 2020	May 15, 2020	0.625		45.7
				$	91.0
2019
February 7, 2019	February 14, 2019	$	0.60	$	43.1
May 8, 2019	May 15, 2019	0.60		43.1
				$	86.2

On July 16, 2020, we declared a distribution of $0.625 per limited partner unit to be paid on August 14, 2020 to unitholders of record on August 7, 2020 with respect to the quarter ended June 30, 2020.

Preferred Unitholders. During the six months ended June 30, 2020 and 2019, we made cash distributions to our preferred unitholders of approximately $30.0 million in both periods. On July 16, 2020, the board of directors of our general partner authorized a cash distribution to our preferred unitholders of approximately $15.0 million for the quarter ended June 30, 2020.

Crestwood Midstream

During the six months ended June 30, 2020 and 2019, Crestwood Midstream paid cash distributions of $119.0 million and $117.5 million to Crestwood Equity.

Non-Controlling Partner

Crestwood Niobrara issued preferred interests to Jackalope Holdings, which are reflected as non-controlling interest in subsidiary apart from partners’ capital (i.e., temporary equity) on our consolidated balance sheets. In April 2019, Crestwood Niobrara issued $235 million in new preferred interests (Series A-3 Preferred Units) to Jackalope Holdings in conjunction with Crestwood Niobrara’s acquisition of the remaining 50% equity interest in Jackalope from Williams, at which time we began classifying our non-controlling interest in subsidiary apart from partners’ capital. We adjust the carrying amount of our non-controlling interest to its redemption value each period through net income attributable to non-controlling partner.

The following table shows the change in our non-controlling interest in subsidiary at June 30, 2020 and 2019 (in millions):



Balance at December 31, 2019	$	426.2
Contributions from non-controlling partner	2.8
Distributions to non-controlling partner	(18.5		)
Net income attributable to non-controlling partner	20.1
Balance at June 30, 2020	$	430.6



Balance at December 31, 2018	$	—
Reclassification of Series A-2 Preferred Units	178.8
Issuance of Series A-3 Preferred Units	235.0
Net income attributable to non-controlling partner	10.6
Balance at June 30, 2019	$	424.4

Crestwood Niobrara makes quarterly cash distributions on its preferred interests within 30 days after the end of each quarter. During the six months ended June 30, 2020 and 2019, Crestwood Niobrara paid cash distributions of $18.5 million and $6.6 million to Jackalope Holdings. In July 2020, Crestwood Niobrara paid cash distributions to Jackalope Holdings of approximately$9.3 million for the quarter ended June 30, 2020. During the six months ended June 30, 2020, we received contributions of $2.8 million from our non-controlling partner to fund our Jackalope expansion projects.

Other

In February 2020, Crestwood Equity issued 184,528 performance units under the Crestwood Equity Partners LP Long Term Incentive Plan (Crestwood LTIP). The performance units are designed to provide an incentive for continuous employment to certain key employees. The vesting of performance units is subject to the attainment of certain performance and market goals over a three-year period, and entitle a participant to receive common units of Crestwood Equity without payment of an exercise price upon vesting. As of June 30, 2020, we had total unamortized compensation expense of approximately $3.7 million related to these performance units, which we expect will be amortized during the next three years. During the three and six months ended June 30, 2020, we recognized compensation expense of approximately $0.6 million and $0.8 million related to these performance units, which is included in general and administrative expenses on our consolidated statements of operations.

During the six months ended June 30, 2020, 405,620 performance units that were previously issued under the Crestwood LTIP vested, and as a result of the attainment of certain performance and market goals and related distributions during the three years that the awards were outstanding, we issued 838,556 common units during the six months ended June 30, 2020 related to those performance units.

Commitments and Contingencies

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Legal Proceedings

Linde Lawsuit. On December 23, 2019, Linde Engineering North America Inc. (Linde) filed a lawsuit in the District Court of Harris County, Texas alleging that Arrow Field Services, LLC, our consolidated subsidiary, and Crestwood Midstream breached a contract entered into in March 2018 under which Linde was to provide engineering, procurement and construction services to us related to the completion of the construction of the Bear Den II cryogenic processing plant. Linde claims damages of $55 million in unpaid invoices and other damages. This matter is not an insurable event based on our insurance policies, and we are unable to predict the outcome for this matter.

General. We are periodically involved in litigation proceedings. If we determine that a negative outcome is probable and the amount of loss is reasonably estimable, then we accrue the estimated amount. The results of litigation proceedings cannot be predicted with certainty. We could incur judgments, enter into settlements or revise our expectations regarding the outcome of certain matters, and such developments could have a material adverse effect on our results of operations or cash flows in the period in which the amounts are paid and/or accrued. As of June 30, 2020 and December 31, 2019, we had approximately $10.9 million and $10.7 million accrued for outstanding legal matters. Based on currently available information, we believe it is remote that future costs related to known contingent liability exposures for which we can estimate will exceed current accruals by an amount that would have a material adverse impact on our consolidated financial statements. As we learn new facts concerning contingencies, we reassess our position both with respect to accrued liabilities and other potential exposures.

Any loss estimates are inherently subjective, based on currently available information, and are subject to management’s judgment and various assumptions. Due to the inherently subjective nature of these estimates and the uncertainty and unpredictability surrounding the outcome of legal proceedings, actual results may differ materially from any amounts that have been accrued.

Regulatory Compliance

In the ordinary course of our business, we are subject to various laws and regulations. In the opinion of our management, compliance with current laws and regulations will not have a material effect on our results of operations, cash flows or financial condition.

Environmental Compliance

Our operations are subject to stringent and complex laws and regulations pertaining to worker health, safety, and the environment. We are subject to laws and regulations at the federal, state, regional and local levels that relate to air and water quality, hazardous and solid waste management and disposal, and other environmental matters. The cost of planning, designing, constructing and operating our facilities must incorporate compliance with environmental laws and regulations and safety standards. Failure to comply with these laws and regulations may trigger a variety of administrative, civil and potentially criminal enforcement measures.

During 2014, we experienced three releases totaling approximately 28,000 barrels of produced water on our Arrow water gathering system located on the Fort Berthold Indian Reservation in North Dakota. We immediately notified the National Response Center, the Three Affiliated Tribes and numerous other regulatory authorities. Thereafter, we contained and cleaned up the releases, and placed the impacted segments of these water lines back into service. In May 2015, we experienced a release of approximately 5,200 barrels of produced water on our Arrow water gathering system, immediately notified numerous regulatory authorities and other third parties, and thereafter contained and cleaned up the releases.

In August 2015, we received a notice of violation from the Three Affiliated Tribes’ Environmental Division related to our 2014 produced water releases on the Fort Berthold Indian Reservation. The notice of violation imposes fines and requests reimbursements exceeding $1.1 million; however, the notice of violation was stayed on September 15, 2015. Our discussions regarding the notice of violation continue with the Three Affiliated Tribes.

During September 2019, we experienced two produced water releases totaling approximately 5,000 barrels on our Arrow system located on the Fort Berthold Indian Reservation in North Dakota. We immediately notified the National Response Center, the State of North Dakota, the Three Affiliated Tribes, affected landowners and numerous other regulatory authorities. We are substantially complete with the remediation efforts and continue to monitor the impact of both spills.

In response to the water releases on our Arrow system, we removed approximately 30 miles of water gathering pipeline from service. In addition, we are currently in the process of replacing certain sections of our water gathering pipeline with pipeline composed of higher capacity material that is more suitable to the environment and climate conditions in the Bakken, which will increase water gathering capacity on the Arrow system and further our commitment to sustainability and environmental stewardship in the areas where we live and operate.

We will continue our remediation efforts to ensure the impacted lands are restored to their prior state. We believe these releases are insurable events under our policies, and we have notified our carriers of these events. We have not recorded an insurance receivable as of June 30, 2020.

At June 30, 2020 and December 31, 2019, our accrual of approximately $3.8 million and $6.7 million was based on our undiscounted estimate of amounts we will spend on compliance with environmental and other regulations, and any associated fines or penalties. We estimate that our potential liability for reasonably possible outcomes related to our environmental exposures could range from approximately $3.8 million to $8.0 million at June 30, 2020.

Self-Insurance

We utilize third-party insurance subject to varying retention levels of self-insurance, which management considers prudent. Such self-insurance relates to losses and liabilities primarily associated with medical claims, workers’ compensation claims and general, product, vehicle and environmental liability. Losses are accrued based upon management’s estimates of the aggregate liability for claims incurred using certain assumptions followed in the insurance industry and based on past experience. The primary assumption utilized is actuarially determined loss development factors. The loss development factors are based primarily on historical data. Our self insurance reserves could be affected if future claim developments differ from the historical trends. We believe changes in health care costs, trends in health care claims of our employee base, accident frequency and severity and other factors could materially affect the estimate for these liabilities. We continually monitor changes in employee demographics, incident and claim type and evaluate our insurance accruals and adjust our accruals based on our

evaluation of these qualitative data points. We are liable for the development of claims for our disposed retail propane operations, provided they were reported prior to August 1, 2012. The following table summarizes CEQP’s and CMLP’s self-insurance reserves at June 30, 2020 and December 31, 2019 (in millions):



	CEQP				CMLP
	June 30, 2020		December 31, 2019		June 30, 2020		December 31, 2019
Self-insurance reserves⁽¹⁾	$	9.4	$	9.7	$	8.3	$	8.3


(1)	At June 30, 2020, CEQP and CMLP classified approximately $6.2 million and $5.2 million, respectively of these reserves as other long-term liabilities on their consolidated balance sheets.

Leases

The following table summarizes the balance sheet information related to our operating and finance leases at June 30, 2020 and December 31, 2019 (in millions):



	June 30,		December 31,
	2020		2019
Operating Leases
Operating lease right-of-use assets, net	$	44.2	$	53.8

Accrued expenses and other liabilities	$	17.8	$	18.1
Long-term operating lease liabilities	32.9		41.5
Total operating lease liabilities	$	50.7	$	59.6
Finance Leases
Property, plant and equipment	$	14.9	$	14.9
Less: accumulated depreciation	7.2		5.4
Property, plant and equipment, net	$	7.7	$	9.5

Accrued expenses and other liabilities	$	3.3	$	3.2
Other long-term liabilities	3.6		5.2
Total finance lease liabilities	$	6.9	$	8.4

Lease expense. Our operating lease expense, net totaled $7.1 million and $7.3 million for the three months ended June 30, 2020 and 2019 and $14.6 million for both the six months ended June 30, 2020 and 2019. Our finance lease expense totaled $1.1 million for both the three months ended June 30, 2020 and 2019 and $2.2 million for both the six months ended June 30, 2020 and 2019.

Guarantees and Indemnifications

We are involved in various joint ventures that sometimes require financial and performance guarantees. In a financial guarantee, we are obligated to make payments if the guaranteed party fails to make payments under, or violates the terms of, the financial arrangement. In a performance guarantee, we provide assurance that the guaranteed party will execute on the terms of the contract. If they do not, we are required to perform on their behalf. We also periodically provide indemnification arrangements related to assets or businesses we have sold. For a further description of our guarantees associated with our joint ventures, see Note 5.

Our potential exposure under guarantee and indemnification arrangements can range from a specified amount to an unlimited dollar amount, depending on the nature of the claim, specificity as to duration, and the particular transaction. As of June 30, 2020 and December 31, 2019, we have no amounts accrued for these guarantees.

Related Party Transactions

6 Months Ended

Jun. 30, 2020

Related Party Transactions

Crestwood Holdings LLC (Crestwood Holdings) indirectly owns both CEQP’s and CMLP’s general partner. The affiliates of Crestwood Holdings and its owners are considered CEQP’s and CMLP’s related parties. We enter into transactions with our affiliates within the ordinary course of business, including gas gathering and processing services, product purchases, marketing

services and various operating agreements. We also enter into transactions with our affiliates related to services provided on our expansion projects. During the six months ended June 30, 2020 and 2019, we paid approximately $2.9 million and $5.1 million of capital expenditures to Applied Consultants, Inc., an affiliate of Crestwood Holdings.

The following table shows transactions with our affiliates which are reflected in our consolidated statements of operations (in millions). For a further description of our related party agreements, see our 2019 Annual Report on Form 10-K.



	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2020			2019			2020		2019
Revenues at CEQP and CMLP⁽¹⁾	$	7.5		$	1.3		$	15.0	$	2.5
Costs of product/services sold at CEQP and CMLP⁽²⁾	$	3.6		$	0.9		$	6.8	$	35.3
Operations and maintenance expenses charged by CEQP and CMLP⁽³⁾	$	5.5		$	5.9		$	11.7	$	13.4
General and administrative expenses charged by CEQP to CMLP, net⁽⁴⁾	$	10.9		$	10.1		$	18.0	$	21.1
General and administrative expenses at CEQP charged to (from) Crestwood Holdings, net⁽⁵⁾	$	(1.5	)	$	(0.1	)	$	11.3	$	(5.3	)


(1)	Includes $7.5 million and $15.0 million during the three and six months ended June 30, 2020 related to the sale of NGLs to a subsidiary of Crestwood Permian and $1.3 million and $2.5 million during the three and six months ended June 30, 2019 related to the sale of natural gas to a subsidiary of Stagecoach Gas.

(2)

Includes (i) $3.2 million and $6.4 million during the three and six months ended June 30, 2020 and $0.9 million and $9.1 million during the three and six months ended June 30, 2019 related to purchases of NGLs from a subsidiary of Crestwood Permian; (ii) $0.1 million during both the three and six months ended June 30, 2020 related to purchases from a subsidiary of Tres Palacios Holdings, (iii) less than $0.1 million and $2.3 million during the three and six months ended June 30, 2019 related to purchases of natural gas from a subsidiary of Stagecoach Gas; and (iv) $0.3 million during both the three and six months ended June 30, 2020 and less than $0.1 million and $23.9 million during the three and six months ended June 30, 2019 related to an agency marketing agreement with Ascent Resources - Utica, LLC, an affiliate of Crestwood Holdings.

(3)

We have operating agreements with certain of our unconsolidated affiliates pursuant to which we charge them operations and maintenance expenses in accordance with their respective agreements, and these charges are reflected as a reduction of operations and maintenance expenses in our consolidated statements of operations. During the three and six months ended June 30, 2020, we charged $1.6 million and $3.3 million to Stagecoach Gas, $1.1 million and $2.2 million to Tres Palacios, and $2.8 million and $6.2 million to Crestwood Permian under these agreements. During the three and six months ended June 30, 2019, we charged $1.9 million and $3.9 million to Stagecoach Gas, $1.0 million and $2.2 million to Tres Palacios, and $3.0 million and $6.8 million to Crestwood Permian. During the six months ended June 30, 2019, we charged $0.5 million to Jackalope under an operating agreement prior to our acquisition of the remaining 50% equity interest in Jackalope in Williams.

(4)

Includes $11.9 million and $20.1 million of unit-based compensation charges allocated from CEQP to CMLP for the three and six months ended June 30, 2020 and $11.0 million and $22.9 million for the three and six months ended June 30, 2019. In addition, includes $1.0 million and $2.1 million of CMLP’s general and administrative costs allocated to CEQP during the three and six months ended June 30, 2020 and $0.9 million and $1.8 million during the three and six months ended June 30, 2019.

(5)

Includes $1.7 million of unit-based compensation charges allocated from Crestwood Holdings to CEQP and CMLP during the three months ended June 30, 2020, a $10.9 million reduction of unit-based compensation charges allocated from Crestwood Holdings to CEQP and CMLP during the six months ended June 30, 2020 and $0.2 million and $5.6 million of unit-based compensation charges allocated from Crestwood Holdings to CEQP and CMLP during the three and six months ended June 30, 2019. In addition, includes $0.2 million and $0.4 million of CEQP’s general and administrative costs allocated to Crestwood Holdings during the three and six months ended June 30, 2020 and $0.1 million and $0.3 million during the three and six months ended June 30, 2019.

The following table shows accounts receivable and accounts payable with our affiliates (in millions):



	June 30, 2020		December 31, 2019
Accounts receivable at CEQP and CMLP	$	10.9	$	7.3
Accounts payable at CEQP	$	6.9	$	15.6
Accounts payable at CMLP	$	4.5	$	13.1

Segments

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Segments

Financial Information

We have three operating and reportable segments: (i) gathering and processing operations; (ii) storage and transportation operations; and (iii) marketing, supply and logistics operations. Our corporate operations include all general and administrative expenses that are not allocated to our reportable segments. We assess the performance of our operating segments based on EBITDA, which is defined as income before income taxes, plus interest and debt expense, net and depreciation, amortization and accretion expense.

Below is a reconciliation of CEQP’s net income (loss) to EBITDA (in millions):



	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2020			2019		2020			2019
Net income (loss)	$	(24.3	)	$	225.0	$	(47.7	)	$	239.1
Add:
Interest and debt expense, net	34.0			27.8		66.6			52.7
Provision (benefit) for income taxes	(0.1		)	0.3		(0.1		)	0.3
Depreciation, amortization and accretion	61.0			49.3		117.1			89.1
EBITDA	$	70.6		$	302.4	$	135.9		$	381.2

Below is a reconciliation of CMLP’s net income (loss) to EBITDA (in millions):



	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2020			2019		2020			2019
Net income (loss)	$	(26.8	)	$	222.9	$	(52.4	)	$	234.5
Add:
Interest and debt expense, net	34.0			27.8		66.6			52.7
Provision (benefit) for income taxes	(0.2		)	0.3		(0.2		)	0.3
Depreciation, amortization and accretion	64.6			52.7		124.2			96.1
EBITDA	$	71.6		$	303.7	$	138.2		$	383.6

The following tables summarize CEQP’s and CMLP’s reportable segment data for the three and six months ended June 30, 2020 and 2019 (in millions). Intersegment revenues included in the following tables are accounted for as arms-length transactions that apply our revenue recognition policies as described in our 2019 Annual Report on Form 10-K. Included in earnings from unconsolidated affiliates, net below was approximately $9.5 million and $10.3 million of our proportionate share of interest expense, depreciation and amortization expense and gains (losses) on long-lived assets, net recorded by our equity investments for the three months ended June 30, 2020 and 2019 and $23.3 million and $23.0 million for the six months ended June 30, 2020 and 2019.

Crestwood Equity



	Three Months Ended June 30, 2020
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	114.5		$	3.1	$	235.1		$	—		$	352.7
Intersegment revenues	14.3			2.4		(16.7		)	—			—
Costs of product/services sold	21.3			0.1		204.3			—			225.7
Operations and maintenance expense	19.3			0.7		11.6			—			31.6
General and administrative expense	—			—		—			29.5			29.5
Loss on long-lived assets, net	(3.6		)	—		(0.2		)	—			(3.8		)
Earnings (loss) from unconsolidated affiliates, net	(1.0		)	9.4		—			—			8.4
Other income, net	—			—		—			0.1			0.1
EBITDA	$	83.6		$	14.1	$	2.3		$	(29.4	)	$	70.6
Goodwill	$	45.9		$	—	$	92.7		$	—		$	138.6
Total assets	$	3,589.8		$	964.7	$	736.9		$	32.3		$	5,323.7



	Three Months Ended June 30, 2019
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	199.7		$	4.9	$	478.8		$	—		$	683.4
Intersegment revenues	25.4			3.2		(28.6		)	—			—
Costs of product/services sold	108.9			—		428.3			—			537.2
Operations and maintenance expense	24.6			0.9		9.2			—			34.7
General and administrative expense	—			—		—			22.3			22.3
Gain (loss) on long-lived assets, net	(0.2		)	—		—			0.2			—
Gain on acquisition	209.4			—		—			—			209.4
Earnings (loss) from unconsolidated affiliates, net	(2.8		)	6.5		—			—			3.7
Other income, net	—			—		—			0.1			0.1
EBITDA	$	298.0		$	13.7	$	12.7		$	(22.0	)	$	302.4



	Six Months Ended June 30, 2020
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	329.4		$	6.6	$	744.6		$	—		$	1,080.6
Intersegment revenues	54.3			5.0		(59.3		)	—			—
Costs of product/services sold	129.6			0.3		630.2			—			760.1
Operations and maintenance expense	46.3			2.1		20.8			—			69.2
General and administrative expense	—			—		—			44.4			44.4
Loss on long-lived assets, net	(4.6		)	—		(0.2		)	—			(4.8		)
Goodwill impairment	(80.3		)	—		—			—			(80.3		)
Earnings (loss) from unconsolidated affiliates, net	(0.2		)	14.1		—			—			13.9
Other income, net	—			—		—			0.2			0.2
EBITDA	$	122.7		$	23.3	$	34.1		$	(44.2	)	$	135.9
Goodwill	$	45.9		$	—	$	92.7		$	—		$	138.6
Total assets	$	3,589.8		$	964.7	$	736.9		$	32.3		$	5,323.7



	Six Months Ended June 30, 2019
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	382.0		$	12.7	$	1,123.9		$	—		$	1,518.6
Intersegment revenues	78.2			6.8		(85.0		)	—			—
Costs of product/services sold	246.9			—		985.9			—			1,232.8
Operations and maintenance expense	42.7			1.9		18.7			—			63.3
General and administrative expense	—			—		—			59.5			59.5
Gain (loss) on long-lived assets, net	(2.0		)	—		(0.2		)	0.2			(2.0		)
Gain on acquisition	209.4			—		—			—			209.4
Earnings (loss) from unconsolidated affiliates, net	(3.0		)	13.6		—			—			10.6
Other income, net	—			—		—			0.2			0.2
EBITDA	$	375.0		$	31.2	$	34.1		$	(59.1	)	$	381.2

Crestwood Midstream



	Three Months Ended June 30, 2020
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	114.5		$	3.1	$	235.1		$	—		$	352.7
Intersegment revenues	14.3			2.4		(16.7		)	—			—
Costs of product/services sold	21.3			0.1		204.3			—			225.7
Operations and maintenance expense	19.3			0.7		11.6			—			31.6
General and administrative expense	—			—		—			28.4			28.4
Loss on long-lived assets, net	(3.6		)	—		(0.2		)	—			(3.8		)
Earnings (loss) from unconsolidated affiliates, net	(1.0		)	9.4		—			—			8.4
EBITDA	$	83.6		$	14.1	$	2.3		$	(28.4	)	$	71.6
Goodwill	$	45.9		$	—	$	92.7		$	—		$	138.6
Total assets	$	3,742.1		$	964.7	$	736.9		$	28.6		$	5,472.3



	Three Months Ended June 30, 2019
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	199.7		$	4.9	$	478.8		$	—		$	683.4
Intersegment revenues	25.4			3.2		(28.6		)	—			—
Costs of product/services sold	108.9			—		428.3			—			537.2
Operations and maintenance expense	24.6			0.9		9.2			—			34.7
General and administrative expense	—			—		—			20.9			20.9
Gain (loss) on long-lived assets, net	(0.2		)	—		—			0.2			—
Gain on acquisition	209.4			—		—			—			209.4
Earnings (loss) from unconsolidated affiliates, net	(2.8		)	6.5		—			—			3.7
EBITDA	$	298.0		$	13.7	$	12.7		$	(20.7	)	$	303.7



	Six Months Ended June 30, 2020
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	329.4		$	6.6	$	744.6		$	—		$	1,080.6
Intersegment revenues	54.3			5.0		(59.3		)	—			—
Costs of product/services sold	129.6			0.3		630.2			—			760.1
Operations and maintenance expense	46.3			2.1		20.8			—			69.2
General and administrative expense	—			—		—			41.9			41.9
Loss on long-lived assets, net	(4.6		)	—		(0.2		)	—			(4.8		)
Goodwill impairment	(80.3		)	—		—			—			(80.3		)
Earnings (loss) from unconsolidated affiliates, net	(0.2		)	14.1		—			—			13.9
EBITDA	$	122.7		$	23.3	$	34.1		$	(41.9	)	$	138.2
Goodwill	$	45.9		$	—	$	92.7		$	—		$	138.6
Total assets	$	3,742.1		$	964.7	$	736.9		$	28.6		$	5,472.3



	Six Months Ended June 30, 2019
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	382.0		$	12.7	$	1,123.9		$	—		$	1,518.6
Intersegment revenues	78.2			6.8		(85.0		)	—			—
Costs of product/services sold	246.9			—		985.9			—			1,232.8
Operations and maintenance expense	42.7			1.9		18.7			—			63.3
General and administrative expense	—			—		—			56.9			56.9
Gain (loss) on long-lived assets, net	(2.0		)	—		(0.2		)	0.2			(2.0		)
Gain on acquisition	209.4			—		—			—			209.4
Earnings (loss) from unconsolidated affiliates, net	(3.0		)	13.6		—			—			10.6
EBITDA	$	375.0		$	31.2	$	34.1		$	(56.7	)	$	383.6

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8981-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Paragraph 32
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-URI http://asc.fasb.org/topic&trid=2134510

+ Details

Revenue Recognition

6 Months Ended

Jun. 30, 2020

Revenue Recognition [Abstract]

Revenue Recognition

Revenues

Contract Assets and Contract Liabilities

Our contract assets and contract liabilities are reported in a net position on a contract-by-contract basis at the end of each reporting period. Our receivables related to our revenue contracts totaled $158.3 million and $225.0 million at June 30, 2020 and December 31, 2019, and are included in accounts receivable on our consolidated balance sheets. Our contract assets are included in other non-current assets on our consolidated balance sheets. Our contract liabilities primarily consist of current and non-current deferred revenues. On our consolidated balance sheets, our current deferred revenues are included in accrued expenses and other liabilities and our non-current deferred revenues are included in other long-term liabilities. The majority of revenues associated with our deferred revenues is expected to be recognized as the performance obligations under the related contracts are satisfied over the next 17 years.

The following table summarizes our contract assets and contract liabilities (in millions):



	June 30, 2020		December 31, 2019
Contract assets (non-current)	$	1.2	$	1.2
Contract liabilities (current)⁽¹⁾	$	10.2	$	8.8
Contract liabilities (non-current)⁽¹⁾	$	159.6	$	144.7

(1)

During the three and six months ended June 30, 2020, we recognized revenues of approximately $3.1 million and $6.9 million that were previously included in contract liabilities (current) at December 31, 2019. The remaining change in our contract liabilities during the three and six months ended June 30, 2020, related to capital reimbursements associated with our revenue contracts and revenue deferrals associated with our contracts with increasing (decreasing) rates.

The following table summarizes the transaction price allocated to our remaining performance obligations under certain contracts that have not been recognized as of June 30, 2020 (in millions):



Remainder of 2020	$	52.3
2021	94.1
2022	63.2
2023	8.0
2024	3.3
Total	$	220.9

Our remaining performance obligations presented in the table above exclude estimates of variable rate escalation clauses in our contracts with customers, and is generally limited to fixed-fee and percentage-of-proceeds service contracts which have fixed pricing and minimum volume terms and conditions. Our remaining performance obligations generally exclude, based on the following practical expedients that we elected to apply, disclosures for (i) variable consideration allocated to a wholly-unsatisfied promise to transfer a distinct service that forms part of the identified single performance obligation; (ii) unsatisfied performance obligations where the contract term is one year or less; and (iii) contracts for which we recognize revenues as amounts are invoiced.

Disaggregation of Revenues

The following tables summarize our revenues from contracts with customers disaggregated by type of product/service sold and by commodity type for each of our segments for the three and six months ended June 30, 2020 and 2019 (in millions). We believe this summary best depicts how the nature, amount, timing and uncertainty of our revenues and cash flows are affected by economic factors.



	Three Months Ended June 30, 2020
	Gathering and Processing		Storage and Transportation		Marketing, Supply and Logistics		Intersegment Elimination			Total
Topic 606 revenues
Gathering
Natural gas	$	33.2	$	—	$	—	$	—		$	33.2
Crude oil	17.9		—		—		—			17.9
Water	18.3		—		—		—			18.3
Processing
Natural gas	7.1		—		—		—			7.1
Compression
Natural gas	5.7		—		—		—			5.7
Storage
Crude oil	0.4		1.1		—		(0.8		)	0.7
NGLs	—		—		3.6		—			3.6
Pipeline
Crude oil	—		1.3		—		(0.4		)	0.9
NGLs	—		—		0.2		—			0.2
Transportation
Crude oil	1.5		—		0.3		—			1.8
NGLs	—		—		2.6		—			2.6
Rail Loading
Crude oil	—		2.9		—		(1.2		)	1.7
Product Sales
Natural gas	6.9		—		15.5		(6.8		)	15.6
Crude oil	34.8		—		102.0		(7.1		)	129.7
NGLs	3.0		—		92.4		(0.3		)	95.1
Other	—		0.2		0.2		(0.1		)	0.3
Total Topic 606 revenues	128.8		5.5		216.8		(16.7		)	334.4
Non-Topic 606 revenues⁽¹⁾	—		—		18.3		—			18.3
Total revenues	$	128.8	$	5.5	$	235.1	$	(16.7	)	$	352.7


(1)	Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.



	Three Months Ended June 30, 2019
	Gathering and Processing		Storage and Transportation		Marketing, Supply and Logistics		Intersegment Elimination			Total
Topic 606 revenues
Gathering
Natural gas	$	42.9	$	—	$	—	$	—		$	42.9
Crude oil	15.1		—		—		—			15.1
Water	19.0		—		—		—			19.0
Processing
Natural gas	8.1		—		—		—			8.1
Compression
Natural gas	6.2		—		—		—			6.2
Storage
Crude oil	0.5		1.5		—		(0.5		)	1.5
NGLs	—		—		1.3		—			1.3
Pipeline
Crude oil	—		1.5		—		(0.5		)	1.0
Transportation
Crude oil	1.8		—		1.5		—			3.3
NGLs	—		—		2.1		—			2.1
Rail Loading
Crude oil	—		3.9		—		(1.4		)	2.5
Product Sales
Natural gas	10.9		—		7.9		(4.8		)	14.0
Crude oil	110.2		—		291.4		(16.0		)	385.6
NGLs	10.4		—		133.9		(4.5		)	139.8
Other	—		1.2		0.3		(0.9		)	0.6
Total Topic 606 revenues	225.1		8.1		438.4		(28.6		)	643.0
Non-Topic 606 revenues⁽¹⁾	—		—		40.4		—			40.4
Total revenues	$	225.1	$	8.1	$	478.8	$	(28.6	)	$	683.4


(1)	Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.



	Six Months Ended June 30, 2020
	Gathering and Processing		Storage and Transportation		Marketing, Supply and Logistics		Intersegment Elimination			Total
Topic 606 revenues
Gathering
Natural gas	$	77.0	$	—	$	—	$	—		$	77.0
Crude oil	44.4		—		—		—			44.4
Water	41.3		—		—		—			41.3
Processing
Natural gas	17.3		—		—		—			17.3
Compression
Natural gas	12.0		—		—		—			12.0
Storage
Crude oil	0.9		1.7		—		(1.2		)	1.4
NGLs	—		—		5.2		—			5.2
Pipeline
Crude oil	—		2.9		—		(0.9		)	2.0
NGLs	—		—		0.2		—			0.2
Transportation
Crude oil	3.5		—		1.9		—			5.4
NGLs	—		—		4.3		—			4.3
Rail Loading
Crude oil	—		6.3		—		(2.6		)	3.7
Product Sales
Natural gas	18.9		—		33.8		(18.5		)	34.2
Crude oil	155.9		—		352.2		(23.4		)	484.7
NGLs	12.5		—		252.7		(12.2		)	253.0
Other	—		0.7		0.7		(0.5		)	0.9
Total Topic 606 revenues	383.7		11.6		651.0		(59.3		)	987.0
Non-Topic 606 revenues⁽¹⁾	—		—		93.6		—			93.6
Total revenues	$	383.7	$	11.6	$	744.6	$	(59.3	)	$	1,080.6


(1)	Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.



	Six Months Ended June 30, 2019
	Gathering and Processing		Storage and Transportation		Marketing, Supply and Logistics		Intersegment Elimination			Total
Topic 606 revenues
Gathering
Natural gas	$	73.1	$	—	$	—	$	—		$	73.1
Crude oil	30.4		—		—		—			30.4
Water	35.8		—		—		—			35.8
Processing
Natural gas	10.6		—		—		—			10.6
Compression
Natural gas	12.2		—		—		—			12.2
Storage
Crude oil	1.0		2.9		—		(1.2		)	2.7
NGLs	—		—		2.6		—			2.6
Pipeline
Crude oil	—		3.2		—		(1.2		)	2.0
Transportation
Crude oil	3.3		—		3.0		—			6.3
NGLs	—		—		6.2		—			6.2
Rail Loading
Crude oil	—		11.1		—		(2.8		)	8.3
Product Sales
Natural gas	29.7		—		30.2		(11.4		)	48.5
Crude oil	241.8		—		581.5		(59.3		)	764.0
NGLs	22.3		—		355.4		(7.3		)	370.4
Other	—		2.3		0.3		(1.8		)	0.8
Total Topic 606 revenues	460.2		19.5		979.2		(85.0		)	1,373.9
Non-Topic 606 revenues⁽¹⁾	—		—		144.7		—			144.7
Total revenues	$	460.2	$	19.5	$	1,123.9	$	(85.0	)	$	1,518.6

(1)

Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

+ Details

Condensed Consolidating Financial Information

6 Months Ended

Jun. 30, 2020

Condensed Financial Information Disclosure [Abstract]

Condensed Consolidating Financial Information

Crestwood Midstream is a holding company (Parent) and owns no operating assets and has no significant operations independent of its subsidiaries. Obligations under Crestwood Midstream’s senior notes and its credit facility are jointly and severally guaranteed by substantially all of its subsidiaries, except for Crestwood Infrastructure, Crestwood Niobrara, Crestwood Pipeline and Storage Northeast LLC, PRBIC and Tres Holdings and their respective subsidiaries (collectively, Non-Guarantor Subsidiaries). Crestwood Midstream Finance Corp., the co-issuer of the senior notes, is Crestwood Midstream’s 100% owned subsidiary and has no material assets, operations, revenues or cash flows other than those related to its service as co-issuer of the Crestwood Midstream senior notes.

The tables below present condensed consolidating financial statements for Crestwood Midstream as Parent on a stand-alone, unconsolidated basis, and Crestwood Midstream’s combined guarantor and combined non-guarantor subsidiaries as of June 30, 2020 and December 31, 2019, and for the three and six months ended June 30, 2020 and 2019. The financial information may not necessarily be indicative of the results of operations, cash flows or financial position had the subsidiaries operated as independent entities.



Crestwood Midstream Partners LP
Condensed Consolidating Balance Sheet
June 30, 2020
(in millions)
(unaudited)
	Parent		Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Current assets:
Cash	$	0.4	$	—	$	5.7	$	—		$	6.1
Accounts receivable	—		146.5		19.3		—			165.8
Inventory	—		88.9		—		—			88.9
Other current assets	—		52.8		0.3		—			53.1
Total current assets	0.4		288.2		25.3		—			313.9

Property, plant and equipment, net	—		2,410.1		783.6		—			3,193.7
Goodwill and intangible assets, net	—		671.2		284.5		—			955.7
Operating lease right-of-use assets, net	—		41.5		2.7		—			44.2
Investments in consolidated affiliates	4,501.0		—		—		(4,501.0		)	—
Investments in unconsolidated affiliates	—		—		961.9		—			961.9
Other non-current assets	—		2.4		0.5		—			2.9
Total assets	$	4,501.4	$	3,413.4	$	2,058.5	$	(4,501.0	)	$	5,472.3

Liabilities and capital
Current liabilities:
Accounts payable	$	—	$	114.6	$	1.5	$	—		$	116.1
Other current liabilities	25.2		114.8		24.8		—			164.8
Total current liabilities	25.2		229.4		26.3		—			280.9

Long-term liabilities:
Long-term debt, less current portion	2,575.7		—		—		—			2,575.7
Other long-term liabilities	—		165.8		118.2		—			284.0
Deferred income taxes	—		0.6		—		—			0.6
Total liabilities	2,600.9		395.8		144.5		—			3,141.2

Interest of non-controlling partner in subsidiary	—		—		430.6		—			430.6
Partners’ capital	1,900.5		3,017.6		1,483.4		(4,501.0		)	1,900.5
Total liabilities and capital	$	4,501.4	$	3,413.4	$	2,058.5	$	(4,501.0	)	$	5,472.3



Crestwood Midstream Partners LP
Condensed Consolidating Balance Sheet
December 31, 2019
(in millions)
	Parent		Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Current assets:
Cash	$	1.8	$	—	$	23.6	$	—		$	25.4
Accounts receivable	—		229.1		12.8		—			241.9
Inventory	—		53.7		—		—			53.7
Other current assets	—		54.6		0.2		—			54.8
Total current assets	1.8		337.4		36.6		—			375.8

Property, plant and equipment, net	—		2,331.3		736.2		—			3,067.5
Goodwill and intangible assets, net	—		650.7		373.4		—			1,024.1
Operating lease right-of-use assets, net	—		51.0		2.8		—			53.8
Investments in consolidated affiliates	4,451.6		—		—		(4,451.6		)	—
Investments in unconsolidated affiliates	—		—		980.4		—			980.4
Other non-current assets	—		1.9		0.5		—			2.4
Total assets	$	4,453.4	$	3,372.3	$	2,129.9	$	(4,451.6	)	$	5,504.0

Liabilities and capital
Current liabilities:
Accounts payable	$	—	$	175.9	$	10.7	$	—		$	186.6
Other current liabilities	25.8		123.9		17.6		—			167.3
Total current liabilities	25.8		299.8		28.3		—			353.9

Long-term liabilities:
Long-term debt, less current portion	2,328.3		—		—		—			2,328.3
Other long-term liabilities	—		174.8		120.8		—			295.6
Deferred income taxes	—		0.7		—		—			0.7
Total liabilities	2,354.1		475.3		149.1		—			2,978.5

Interest of non-controlling partner in subsidiary	—		—		426.2		—			426.2
Partners’ capital	2,099.3		2,897.0		1,554.6		(4,451.6		)	2,099.3
Total liabilities and capital	$	4,453.4	$	3,372.3	$	2,129.9	$	(4,451.6	)	$	5,504.0



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Operations
Three Months Ended June 30, 2020
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	336.5		$	16.2		$	—		$	352.7
Costs of product/services sold	—			225.5			0.2			—			225.7
Operating expenses and other:
Operations and maintenance	—			26.5			5.1			—			31.6
General and administrative	14.8			13.6			—			—			28.4
Depreciation, amortization and accretion	—			50.3			14.3			—			64.6
Loss on long-lived assets, net	—			2.0			1.8			—			3.8
	14.8			92.4			21.2			—			128.4
Operating income (loss)	(14.8		)	18.6			(5.2		)	—			(1.4		)
Earnings from unconsolidated affiliates, net	—			—			8.4			—			8.4
Interest and debt expense, net	(33.9		)	(0.1		)	—			—			(34.0		)
Equity in net income (loss) of subsidiaries	11.7			—			—			(11.7		)	—
Income (loss) before income taxes	(37.0		)	18.5			3.2			(11.7		)	(27.0		)
Benefit for income taxes	—			0.2			—			—			0.2
Net income (loss)	(37.0		)	18.7			3.2			(11.7		)	(26.8		)
Net income attributable to non-controlling partner in subsidiary	—			—			10.2			—			10.2
Net income (loss) attributable to Crestwood Midstream Partners LP	$	(37.0	)	$	18.7		$	(7.0	)	$	(11.7	)	$	(37.0	)



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Operations
Three Months Ended June 30, 2019
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	663.2		$	20.2		$	—		$	683.4
Costs of product/services sold	—			537.2			—			—			537.2
Operating expenses:
Operations and maintenance	—			27.5			7.2			—			34.7
General and administrative	9.7			11.2			—			—			20.9
Depreciation, amortization and accretion	—			43.0			9.7			—			52.7
Gain on acquisition	—			—			(209.4		)	—			(209.4		)
	9.7			81.7			(192.5		)	—			(101.1		)
Operating income (loss)	(9.7		)	44.3			212.7			—			247.3
Earnings from unconsolidated affiliates, net	—			—			3.7			—			3.7
Interest and debt expense, net	(28.0		)	0.2			—			—			(27.8		)
Equity in net income (loss) of subsidiaries	250.0			—			—			(250.0		)	—
Income (loss) before income taxes	212.3			44.5			216.4			(250.0		)	223.2
Provision for income taxes	—			(0.3		)	—			—			(0.3		)
Net income (loss)	212.3			44.2			216.4			(250.0		)	222.9
Net income attributable to non-controlling partner in subsidiary	—			—			10.6			—			10.6
Net income (loss) attributable to Crestwood Midstream Partners LP	$	212.3		$	44.2		$	205.8		$	(250.0	)	$	212.3



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Operations
Six Months Ended June 30, 2020
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	1,036.9		$	43.7		$	—		$	1,080.6
Costs of product/services sold	—			759.9			0.2			—			760.1
Operating expenses and other:
Operations and maintenance	—			58.3			10.9			—			69.2
General and administrative	32.7			9.2			—			—			41.9
Depreciation, amortization and accretion	—			98.1			26.1			—			124.2
Loss on long-lived assets, net	—			3.0			1.8			—			4.8
Goodwill impairment	—			—			80.3			—			80.3
	32.7			168.6			119.1			—			320.4
Operating income (loss)	(32.7		)	108.4			(75.6		)	—			0.1
Earnings from unconsolidated affiliates, net	—			—			13.9			—			13.9
Interest and debt expense, net	(66.3		)	(0.3		)	—			—			(66.6		)
Equity in net income (loss) of subsidiaries	26.5			—			—			(26.5		)	—
Income (loss) before income taxes	(72.5		)	108.1			(61.7		)	(26.5		)	(52.6		)
Benefit for income taxes	—			0.2			—			—			0.2
Net income (loss)	(72.5		)	108.3			(61.7		)	(26.5		)	(52.4		)
Net income attributable to non-controlling partner	—			—			20.1			—			20.1
Net income (loss) attributable to Crestwood Midstream Partners LP	$	(72.5	)	$	108.3		$	(81.8	)	$	(26.5	)	$	(72.5	)



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Operations
Six Months Ended June 30, 2019
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	1,498.4		$	20.2		$	—		$	1,518.6
Costs of product/services sold	—			1,232.8			—			—			1,232.8
Operating expenses and other:
Operations and maintenance	—			56.1			7.2			—			63.3
General and administrative	28.4			28.5			—			—			56.9
Depreciation, amortization and accretion	—			86.4			9.7			—			96.1
Loss on long-lived assets, net	—			2.0			—			—			2.0
Gain on acquisition	—			—			(209.4		)	—			(209.4		)
	28.4			173.0			(192.5		)	—			8.9
Operating income (loss)	(28.4		)	92.6			212.7			—			276.9
Earnings from unconsolidated affiliates, net	—			—			10.6			—			10.6
Interest and debt expense, net	(52.7		)	—			—			—			(52.7		)
Equity in net income (loss) of subsidiaries	301.0			—			—			(301.0		)	—
Income (loss) before income taxes	219.9			92.6			223.3			(301.0		)	234.8
Provision for income taxes	—			(0.3		)	—			—			(0.3		)
Net income (loss)	219.9			92.3			223.3			(301.0		)	234.5
Net income attributable to non-controlling partner in subsidiary	—			—			14.6			—			14.6
Net income (loss) attributable to Crestwood Midstream Partners LP	$	219.9		$	92.3		$	208.7		$	(301.0	)	$	219.9



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Cash Flows
Six Months Ended June 30, 2020
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Cash flows from operating activities	$	(96.4	)	$	197.4		$	80.1		$	—		$	181.1

Cash flows from investing activities:
Acquisition, net of cash acquired	—			(162.3		)	—			—			(162.3		)
Purchases of property, plant and equipment	—			(56.2		)	(87.0		)	—			(143.2		)
Investment in unconsolidated affiliates	—			—			(6.0		)	—			(6.0		)
Capital distributions from unconsolidated affiliates	—			—			18.9			—			18.9
Capital distributions from consolidated affiliates	8.2			—			—			(8.2		)	—
Other	—			(0.3		)	—			—			(0.3		)
Net cash provided by (used in) investing activities	8.2			(218.8		)	(74.1		)	(8.2		)	(292.9		)

Cash flows from financing activities:
Proceeds from the issuance of long-term debt	742.5			—			—			—			742.5
Payments on long-term debt	(498.2		)	—			—			—			(498.2		)
Payments on finance leases	—			(1.6		)	—			—			(1.6		)
Net proceeds from issuance of non-controlling interest	—			—			2.8			—			2.8
Distributions to partners	(119.0		)	—			(18.5		)	—			(137.5		)
Distributions to parent	—			—			(8.2		)	8.2			—
Taxes paid for unit-based compensation vesting	—			(15.5		)	—			—			(15.5		)
Change in intercompany balances	(38.5		)	38.5			—			—			—
Net cash provided by (used in) financing activities	86.8			21.4			(23.9		)	8.2			92.5

Net change in cash	(1.4		)	—			(17.9		)	—			(19.3		)
Cash at beginning of period	1.8			—			23.6			—			25.4
Cash at end of period	$	0.4		$	—		$	5.7		$	—		$	6.1



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Cash Flows
Six Months Ended June 30, 2019
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Cash flows from operating activities	$	(87.1	)	$	309.5		$	(27.3	)	$	—		$	195.1

Cash flows from investing activities:
Acquisition, net of cash acquired	—			—			(462.1		)	—			(462.1		)
Purchases of property, plant and equipment	—			(127.7		)	(77.0		)	—			(204.7		)
Investment in unconsolidated affiliates	—			—			(40.9		)	—			(40.9		)
Capital distributions from unconsolidated affiliates	—			—			24.2			—			24.2
Capital contributions to consolidated affiliates	(217.1		)	—			—			217.1			—
Other	—			(0.5		)	—			—			(0.5		)
Net cash provided by (used in) investing activities	(217.1		)	(128.2		)	(555.8		)	217.1			(684.0		)

Cash flows from financing activities:
Proceeds from the issuance of long-term debt	1,544.0			—			—			—			1,544.0
Payments on long-term debt	(1,159.1		)	(0.4		)	—			—			(1,159.5		)
Payments on finance leases	—			(1.9		)	—			—			(1.9		)
Payments for debt-related deferred costs	(9.0		)	—			—			—			(9.0		)
Net proceeds from the issuance of non-controlling interest	—			—			235.0			—			235.0
Distributions to partners	(117.5		)	—			(6.6		)	—			(124.1		)
Contributions from parent	—			—			217.1			(217.1		)	—
Taxes paid for unit-based compensation vesting	—			(10.6		)	—			—			(10.6		)
Change in intercompany balances	30.7			(168.4		)	137.7			—			—
Net cash provided by (used in) financing activities	289.1			(181.3		)	583.2			(217.1		)	473.9

Net change in cash	(15.1		)	—			0.1			—			(15.0		)
Cash at beginning of period	16.5			—			—			—			16.5
Cash at end of period	$	1.4		$	—		$	0.1		$	—		$	1.5

Basis of Presentation and Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Significant Accounting Policies

Goodwill

The following table summarizes the goodwill of our various reporting units (in millions):



			Impairment during the six months ended
	December 31, 2019		June 30, 2020		June 30, 2020
Gathering and Processing
Arrow	$	45.9	$	—	$	45.9
Powder River Basin	80.3		80.3		—
Marketing, Supply and Logistics
NGL Marketing and Logistics	92.7		—		92.7
Total	$	218.9	$	80.3	$	138.6

Accounts Receivable

New Accounting Pronouncements Issued But Not Yet Adopted

Basis of Presentation and Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Schedule of Goodwill [Table Text Block]

The following table summarizes the goodwill of our various reporting units (in millions):



			Impairment during the six months ended
	December 31, 2019		June 30, 2020		June 30, 2020
Gathering and Processing
Arrow	$	45.9	$	—	$	45.9
Powder River Basin	80.3		80.3		—
Marketing, Supply and Logistics
NGL Marketing and Logistics	92.7		—		92.7
Total	$	218.9	$	80.3	$	138.6

Certain Balance Sheet Information (Tables)

6 Months Ended

Jun. 30, 2020

Balance Sheet Related Disclosures [Abstract]

Schedule of Accrued Liabilities

Accrued expenses and other liabilities consisted of the following (in millions):



	CEQP				CMLP
	June 30,		December 31,		June 30,		December 31,
	2020		2019		2020		2019
Accrued expenses	$	35.1	$	61.6	$	33.7	$	60.3
Accrued property taxes	8.2		6.1		8.2		6.1
Income tax payable	0.3		0.3		0.3		0.3
Interest payable	25.0		25.6		25.0		25.6
Accrued additions to property, plant and equipment	14.9		38.0		14.9		38.0
Contingent consideration	19.0		—		19.0		—
Operating leases	17.8		18.1		17.8		18.1
Finance leases	3.3		3.2		3.3		3.2
Deferred revenue	10.2		8.8		10.2		8.8
Total accrued expenses and other liabilities	$	133.8	$	161.7	$	132.4	$	160.4

Other Noncurrent Liabilities [Table Text Block]

Other long-term liabilities consisted of the following (in millions):



	CEQP				CMLP
	June 30,		December 31,		June 30,		December 31,
	2020		2019		2020		2019
Contract liabilities	$	159.6	$	144.7	$	159.6	$	144.7
Contingent consideration	38.0		57.0		38.0		57.0
Operating leases	32.9		41.5		32.9		41.5
Asset retirement obligations	34.6		33.3		34.6		33.3
Other	20.6		25.1		18.9		19.1
Total other long-term liabilities	$	285.7	$	301.6	$	284.0	$	295.6

Investments in Unconsolidated Affiliates (Tables)

6 Months Ended

Jun. 30, 2020

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments

Net Investments and Earnings

Our net investments in and earnings from our unconsolidated affiliates are as follows (in millions):



	Investment				Earnings (Loss) from Unconsolidated Affiliates						Earnings (Loss) from Unconsolidated Affiliates
	June 30,		December 31,		Three Months Ended June 30,						Six Months Ended June 30,
	2020		2019		2020			2019			2020			2019
Stagecoach Gas Services LLC⁽¹⁾	$	802.8	$	814.4	$	9.2		$	6.4		$	18.4		$	13.4
Crestwood Permian Basin Holdings LLC⁽²⁾	114.7		121.8		(1.0		)	(3.3		)	(0.2		)	(6.7		)
Tres Palacios Holdings LLC⁽³⁾	40.6		35.9		0.1			0.1			0.1			0.3
Powder River Basin Industrial Complex, LLC⁽⁴⁾	3.8		8.3		0.1			—			(4.4		)	(0.1		)
Jackalope Gas Gathering Services, L.L.C.⁽⁵⁾	—		—		—			0.5			—			3.7
Total	$	961.9	$	980.4	$	8.4		$	3.7		$	13.9		$	10.6


(1)	As of June 30, 2020, our equity in the underlying net assets of Stagecoach Gas Services LLC (Stagecoach Gas) exceeded our investment balance by approximately $51.3 million. This excess amount is entirely attributable to goodwill and, as such, is not subject to amortization. Our Stagecoach Gas investment is included in our storage and transportation segment.


(2)	As of June 30, 2020, our equity in the underlying net assets of Crestwood Permian exceeded our investment balance by $9.7 million, and this excess amount is not subject to amortization. Our Crestwood Permian investment is included in our gathering and processing segment.


(3)	As of June 30, 2020, our equity in the underlying net assets of Tres Palacios Holdings LLC (Tres Holdings) exceeded our investment balance by approximately $23.4 million. Our Tres Holdings investment is included in our storage and transportation segment.

(4)

(5)

Summarized Financial Information of Unconsolidated Affiliates

Below is the summarized operating results for our significant unconsolidated affiliates (in millions; amounts represent 100% of unconsolidated affiliate information):



	Six Months Ended June 30,
	2020							2019
	Operating Revenues		Operating Expenses		Net Income (Loss)			Operating Revenues		Operating Expenses		Net Income (Loss)
Stagecoach Gas	$	75.6	$	38.9	$	36.8		$	79.1	$	40.4	$	38.9
Other⁽¹⁾	53.5		76.1		(21.6		)	55.4		62.2		(7.9		)
Total	$	129.1	$	115.0	$	15.2		$	134.5	$	102.6	$	31.0

(1)

Distributions and Contributions

The following table summarizes our distributions from and contributions to our unconsolidated affiliates (in millions):



	Distributions⁽¹⁾				Contributions
	Six Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Stagecoach Gas	$	30.0	$	25.4	$	—	$	—
Crestwood Permian	6.7		2.9		—		10.0
Tres Holdings	1.4		1.2		6.0		6.3
PRBIC	0.1		—		—		0.2
Jackalope	—		11.6		—		24.4
Total	$	38.2	$	41.1	$	6.0	$	40.9

(1)

In July 2020, we received cash distributions from Stagecoach Gas, Crestwood Permian and Tres Holdings of approximately $14.5 million, $1.8 million and $3.0 million, respectively.

Risk Management (Tables)

6 Months Ended

Jun. 30, 2020

Risk Management - Notional Amounts and Terms of Companys Derivative Financial Instruments [Abstract]

Derivatives Not Designated as Hedging Instruments [Table Text Block]

The following table summarizes the impact to our consolidated statements of operations related to our commodity-based derivatives reflected in operating revenues and costs of product/services sold during the three and six months ended June 30, 2020 and 2019 (in millions):



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Product revenues	$	18.0	$	40.2	$	93.0	$	144.3
Gain reflected in costs of product/services sold	$	6.8	$	9.9	$	28.8	$	7.0

Notional Amounts And Terms Of Company's Derivative Financial Instruments

The notional amounts and terms of our derivative financial instruments include the following:



	June 30, 2020		December 31, 2019
	Fixed Price Payor	Fixed Price Receiver	Fixed Price Payor	Fixed Price Receiver
Propane, ethane, butane, heating oil and crude oil (MMBbls)	64.4	69.8	33.5	36.6
Natural gas (Bcf)	10.2	17.5	3.7	8.7

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The following table presents the fair value of our commodity derivative instruments with credit-risk related contingent features and their associated collateral (in millions):



	June 30, 2020		December 31, 2019
Aggregate fair value of derivative instruments with credit-risk-related contingent features⁽¹⁾	$	20.3	$	1.6
NYMEX-related net derivative asset (liability) position	$	1.9	$	(28.8	)
NYMEX-related cash collateral posted	$	26.8	$	40.4
Cash collateral received, net	$	21.1	$	16.9

(1)

At June 30, 2020 and December 31, 2019, we posted less than $0.1 million of collateral associated with these derivatives.

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments



	June 30, 2020				December 31, 2019
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
2023 Senior Notes	$	695.9	$	623.0	$	695.1	$	714.0
2025 Senior Notes	$	495.0	$	435.0	$	494.4	$	514.4
2027 Senior Notes	$	592.6	$	499.2	$	592.1	$	610.1

Assets And Liabilities Measured At Fair Value On Recurring Basis



	June 30, 2020
	Level 1		Level 2		Level 3		Gross Fair Value		Contract Netting⁽¹⁾			Collateral/Margin Received or Paid		Fair Value
Assets
Assets from price risk management	$	26.2	$	187.8	$	—	$	214.0	$	(186.3	)	$	16.7	$	44.4
Suburban Propane Partners, L.P. units⁽²⁾	2.0		—		—		2.0		—			—		2.0
Total assets at fair value	$	28.2	$	187.8	$	—	$	216.0	$	(186.3	)	$	16.7	$	46.4

Liabilities
Liabilities from price risk management	$	29.7	$	177.8	$	—	$	207.5	$	(186.3	)	$	11.0	$	32.2
Total liabilities at fair value	$	29.7	$	177.8	$	—	$	207.5	$	(186.3	)	$	11.0	$	32.2



	December 31, 2019
	Level 1		Level 2		Level 3		Gross Fair Value		Contract Netting⁽¹⁾			Collateral/Margin Received or Paid			Fair Value
Assets
Assets from price risk management	$	3.7	$	164.0	$	—	$	167.7	$	(122.3	)	$	(2.2	)	$	43.2
Suburban Propane Partners, L.P. units⁽²⁾	3.1		—		—		3.1		—			—			3.1
Total assets at fair value	$	6.8	$	164.0	$	—	$	170.8	$	(122.3	)	$	(2.2	)	$	46.3

Liabilities
Liabilities from price risk management	$	2.8	$	151.9	$	—	$	154.7	$	(122.3	)	$	(25.7	)	$	6.7
Total liabilities at fair value	$	2.8	$	151.9	$	—	$	154.7	$	(122.3	)	$	(25.7	)	$	6.7


(1)	Amounts represent the impact of legally enforceable master netting agreements that allow us to settle positive and negative positions.

(2)

Amount is reflected in other assets on CEQP’s consolidated balance sheets.

Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2020

Text Block [Abstract]

Components Of Long-Term Debt

Long-term debt consisted of the following at June 30, 2020 and December 31, 2019 (in millions):



	June 30, 2020		December 31, 2019
Credit Facility	$	801.2	$	557.0
2023 Senior Notes	700.0		700.0
2025 Senior Notes	500.0		500.0
2027 Senior Notes	600.0		600.0
Other	0.6		0.6
Less: deferred financing costs, net	25.9		29.1
Total debt	2,575.9		2,328.5
Less: current portion	0.2		0.2
Total long-term debt, less current portion	$	2,575.7	$	2,328.3

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

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-Name Accounting Standards Codification
-Topic 210
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-Name Accounting Standards Codification
-Topic 835
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

Earnings Per Limited Partner Unit (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following table summarizes information regarding the weighted-average of common units excluded during the three and six months ended June 30, 2020 and 2019 (in millions):



	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2020	2019	2020	2019
Preferred units ⁽¹⁾	7.1	—	7.1	7.1
Crestwood Niobrara’s preferred units⁽¹⁾	8.2	—	8.2	—
Unit-based compensation performance units⁽¹⁾	0.2	—	0.3	—
Subordinated units⁽¹⁾	0.4	—	0.4	—


(1)	For additional information regarding the potential conversion/redemption of our preferred units and Crestwood Niobrara’s preferred units to CEQP common units, and of our performance units and subordinated units, see our 2019 Annual Report on Form 10-K.



	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2020			2019		2020			2019
Common unitholders’ interest in net income (loss)	$	(49.5	)	$	198.2	$	(97.8	)	$	193.3
Dilutive effect of net income attributable to preferred units	—			15.0		—			—
Dilutive effect of net income attributable to subordinated units	—			1.2		—			1.2
Diluted net income (loss)	$	(49.5	)	$	214.4	$	(97.8	)	$	194.5

Weighted-average limited partners’ units outstanding - basic	73.2			71.8		73.0			71.8
Dilutive effect of preferred units	—			7.1		—			—
Dilutive effect of Crestwood Niobrara preferred units	—			3.4		—			4.5
Dilutive effect of stock-based compensation performance units	—			0.3		—			0.3
Dilutive effect of subordinated units	—			0.4		—			0.4
Weighted-average limited partners’ units outstanding - diluted	73.2			83.0		73.0			77.0

Basic earnings per unit:
Net income (loss) per limited partner unit	$	(0.68	)	$	2.76	$	(1.34	)	$	2.69
Diluted earnings per unit:
Net income (loss) per limited partner unit	$	(0.68	)	$	2.58	$	(1.34	)	$	2.53

Partners' Capital (Tables)

6 Months Ended

Jun. 30, 2020

Statement of Partners' Capital [Abstract]

Schedule of Distributions Made to Members or Limited Partners, by Distribution

A summary of CEQP’s limited partner quarterly cash distributions for the six months ended June 30, 2020 and 2019 is presented below:



Record Date	Payment Date	Per Unit Rate		Cash Distributions (in millions)
2020
February 7, 2020	February 14, 2020	$	0.625	$	45.3
May 8, 2020	May 15, 2020	0.625		45.7
				$	91.0
2019
February 7, 2019	February 14, 2019	$	0.60	$	43.1
May 8, 2019	May 15, 2019	0.60		43.1
				$	86.2

Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block]

The following table shows the change in our non-controlling interest in subsidiary at June 30, 2020 and 2019 (in millions):



Balance at December 31, 2019	$	426.2
Contributions from non-controlling partner	2.8
Distributions to non-controlling partner	(18.5		)
Net income attributable to non-controlling partner	20.1
Balance at June 30, 2020	$	430.6

Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Purchase Commitment, Excluding Long-term Commitment [Table Text Block]

The following table summarizes CEQP’s and CMLP’s self-insurance reserves at June 30, 2020 and December 31, 2019 (in millions):



	CEQP				CMLP
	June 30, 2020		December 31, 2019		June 30, 2020		December 31, 2019
Self-insurance reserves⁽¹⁾	$	9.4	$	9.7	$	8.3	$	8.3

(1)

At June 30, 2020, CEQP and CMLP classified approximately $6.2 million and $5.2 million, respectively of these reserves as other long-term liabilities on their consolidated balance sheets.

Assets And Liabilities, Lessee [Table Text Block]

The following table summarizes the balance sheet information related to our operating and finance leases at June 30, 2020 and December 31, 2019 (in millions):



	June 30,		December 31,
	2020		2019
Operating Leases
Operating lease right-of-use assets, net	$	44.2	$	53.8

Accrued expenses and other liabilities	$	17.8	$	18.1
Long-term operating lease liabilities	32.9		41.5
Total operating lease liabilities	$	50.7	$	59.6
Finance Leases
Property, plant and equipment	$	14.9	$	14.9
Less: accumulated depreciation	7.2		5.4
Property, plant and equipment, net	$	7.7	$	9.5

Accrued expenses and other liabilities	$	3.3	$	3.2
Other long-term liabilities	3.6		5.2
Total finance lease liabilities	$	6.9	$	8.4

Related Party Transactions (Tables)

6 Months Ended

Jun. 30, 2020

Schedule of Related Party Transactions



	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2020			2019			2020		2019
Revenues at CEQP and CMLP⁽¹⁾	$	7.5		$	1.3		$	15.0	$	2.5
Costs of product/services sold at CEQP and CMLP⁽²⁾	$	3.6		$	0.9		$	6.8	$	35.3
Operations and maintenance expenses charged by CEQP and CMLP⁽³⁾	$	5.5		$	5.9		$	11.7	$	13.4
General and administrative expenses charged by CEQP to CMLP, net⁽⁴⁾	$	10.9		$	10.1		$	18.0	$	21.1
General and administrative expenses at CEQP charged to (from) Crestwood Holdings, net⁽⁵⁾	$	(1.5	)	$	(0.1	)	$	11.3	$	(5.3	)


(1)	Includes $7.5 million and $15.0 million during the three and six months ended June 30, 2020 related to the sale of NGLs to a subsidiary of Crestwood Permian and $1.3 million and $2.5 million during the three and six months ended June 30, 2019 related to the sale of natural gas to a subsidiary of Stagecoach Gas.

(2)

(3)

(4)

(5)

The following table shows accounts receivable and accounts payable with our affiliates (in millions):



	June 30, 2020		December 31, 2019
Accounts receivable at CEQP and CMLP	$	10.9	$	7.3
Accounts payable at CEQP	$	6.9	$	15.6
Accounts payable at CMLP	$	4.5	$	13.1

Segments (Tables)

6 Months Ended

Jun. 30, 2020

Segment Reporting, Other Significant Reconciling Item [Line Items]

Reconciliation of Net Income (Loss) to Earnings Before Interest, Taxes, Depreciation and Amortization

Below is a reconciliation of CEQP’s net income (loss) to EBITDA (in millions):



	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2020			2019		2020			2019
Net income (loss)	$	(24.3	)	$	225.0	$	(47.7	)	$	239.1
Add:
Interest and debt expense, net	34.0			27.8		66.6			52.7
Provision (benefit) for income taxes	(0.1		)	0.3		(0.1		)	0.3
Depreciation, amortization and accretion	61.0			49.3		117.1			89.1
EBITDA	$	70.6		$	302.4	$	135.9		$	381.2

Summary Of Segment Information

Crestwood Equity



	Three Months Ended June 30, 2020
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	114.5		$	3.1	$	235.1		$	—		$	352.7
Intersegment revenues	14.3			2.4		(16.7		)	—			—
Costs of product/services sold	21.3			0.1		204.3			—			225.7
Operations and maintenance expense	19.3			0.7		11.6			—			31.6
General and administrative expense	—			—		—			29.5			29.5
Loss on long-lived assets, net	(3.6		)	—		(0.2		)	—			(3.8		)
Earnings (loss) from unconsolidated affiliates, net	(1.0		)	9.4		—			—			8.4
Other income, net	—			—		—			0.1			0.1
EBITDA	$	83.6		$	14.1	$	2.3		$	(29.4	)	$	70.6
Goodwill	$	45.9		$	—	$	92.7		$	—		$	138.6
Total assets	$	3,589.8		$	964.7	$	736.9		$	32.3		$	5,323.7



	Three Months Ended June 30, 2019
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	199.7		$	4.9	$	478.8		$	—		$	683.4
Intersegment revenues	25.4			3.2		(28.6		)	—			—
Costs of product/services sold	108.9			—		428.3			—			537.2
Operations and maintenance expense	24.6			0.9		9.2			—			34.7
General and administrative expense	—			—		—			22.3			22.3
Gain (loss) on long-lived assets, net	(0.2		)	—		—			0.2			—
Gain on acquisition	209.4			—		—			—			209.4
Earnings (loss) from unconsolidated affiliates, net	(2.8		)	6.5		—			—			3.7
Other income, net	—			—		—			0.1			0.1
EBITDA	$	298.0		$	13.7	$	12.7		$	(22.0	)	$	302.4



	Six Months Ended June 30, 2020
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	329.4		$	6.6	$	744.6		$	—		$	1,080.6
Intersegment revenues	54.3			5.0		(59.3		)	—			—
Costs of product/services sold	129.6			0.3		630.2			—			760.1
Operations and maintenance expense	46.3			2.1		20.8			—			69.2
General and administrative expense	—			—		—			44.4			44.4
Loss on long-lived assets, net	(4.6		)	—		(0.2		)	—			(4.8		)
Goodwill impairment	(80.3		)	—		—			—			(80.3		)
Earnings (loss) from unconsolidated affiliates, net	(0.2		)	14.1		—			—			13.9
Other income, net	—			—		—			0.2			0.2
EBITDA	$	122.7		$	23.3	$	34.1		$	(44.2	)	$	135.9
Goodwill	$	45.9		$	—	$	92.7		$	—		$	138.6
Total assets	$	3,589.8		$	964.7	$	736.9		$	32.3		$	5,323.7



	Six Months Ended June 30, 2019
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	382.0		$	12.7	$	1,123.9		$	—		$	1,518.6
Intersegment revenues	78.2			6.8		(85.0		)	—			—
Costs of product/services sold	246.9			—		985.9			—			1,232.8
Operations and maintenance expense	42.7			1.9		18.7			—			63.3
General and administrative expense	—			—		—			59.5			59.5
Gain (loss) on long-lived assets, net	(2.0		)	—		(0.2		)	0.2			(2.0		)
Gain on acquisition	209.4			—		—			—			209.4
Earnings (loss) from unconsolidated affiliates, net	(3.0		)	13.6		—			—			10.6
Other income, net	—			—		—			0.2			0.2
EBITDA	$	375.0		$	31.2	$	34.1		$	(59.1	)	$	381.2

Crestwood Midstream Partners LP

Segment Reporting, Other Significant Reconciling Item [Line Items]

Reconciliation of Net Income (Loss) to Earnings Before Interest, Taxes, Depreciation and Amortization

Below is a reconciliation of CMLP’s net income (loss) to EBITDA (in millions):



	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2020			2019		2020			2019
Net income (loss)	$	(26.8	)	$	222.9	$	(52.4	)	$	234.5
Add:
Interest and debt expense, net	34.0			27.8		66.6			52.7
Provision (benefit) for income taxes	(0.2		)	0.3		(0.2		)	0.3
Depreciation, amortization and accretion	64.6			52.7		124.2			96.1
EBITDA	$	71.6		$	303.7	$	138.2		$	383.6

Summary Of Segment Information

Crestwood Midstream



	Three Months Ended June 30, 2020
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	114.5		$	3.1	$	235.1		$	—		$	352.7
Intersegment revenues	14.3			2.4		(16.7		)	—			—
Costs of product/services sold	21.3			0.1		204.3			—			225.7
Operations and maintenance expense	19.3			0.7		11.6			—			31.6
General and administrative expense	—			—		—			28.4			28.4
Loss on long-lived assets, net	(3.6		)	—		(0.2		)	—			(3.8		)
Earnings (loss) from unconsolidated affiliates, net	(1.0		)	9.4		—			—			8.4
EBITDA	$	83.6		$	14.1	$	2.3		$	(28.4	)	$	71.6
Goodwill	$	45.9		$	—	$	92.7		$	—		$	138.6
Total assets	$	3,742.1		$	964.7	$	736.9		$	28.6		$	5,472.3



	Three Months Ended June 30, 2019
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	199.7		$	4.9	$	478.8		$	—		$	683.4
Intersegment revenues	25.4			3.2		(28.6		)	—			—
Costs of product/services sold	108.9			—		428.3			—			537.2
Operations and maintenance expense	24.6			0.9		9.2			—			34.7
General and administrative expense	—			—		—			20.9			20.9
Gain (loss) on long-lived assets, net	(0.2		)	—		—			0.2			—
Gain on acquisition	209.4			—		—			—			209.4
Earnings (loss) from unconsolidated affiliates, net	(2.8		)	6.5		—			—			3.7
EBITDA	$	298.0		$	13.7	$	12.7		$	(20.7	)	$	303.7



	Six Months Ended June 30, 2020
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	329.4		$	6.6	$	744.6		$	—		$	1,080.6
Intersegment revenues	54.3			5.0		(59.3		)	—			—
Costs of product/services sold	129.6			0.3		630.2			—			760.1
Operations and maintenance expense	46.3			2.1		20.8			—			69.2
General and administrative expense	—			—		—			41.9			41.9
Loss on long-lived assets, net	(4.6		)	—		(0.2		)	—			(4.8		)
Goodwill impairment	(80.3		)	—		—			—			(80.3		)
Earnings (loss) from unconsolidated affiliates, net	(0.2		)	14.1		—			—			13.9
EBITDA	$	122.7		$	23.3	$	34.1		$	(41.9	)	$	138.2
Goodwill	$	45.9		$	—	$	92.7		$	—		$	138.6
Total assets	$	3,742.1		$	964.7	$	736.9		$	28.6		$	5,472.3



	Six Months Ended June 30, 2019
	Gathering and Processing			Storage and Transportation		Marketing, Supply and Logistics			Corporate			Total
Revenues	$	382.0		$	12.7	$	1,123.9		$	—		$	1,518.6
Intersegment revenues	78.2			6.8		(85.0		)	—			—
Costs of product/services sold	246.9			—		985.9			—			1,232.8
Operations and maintenance expense	42.7			1.9		18.7			—			63.3
General and administrative expense	—			—		—			56.9			56.9
Gain (loss) on long-lived assets, net	(2.0		)	—		(0.2		)	0.2			(2.0		)
Gain on acquisition	209.4			—		—			—			209.4
Earnings (loss) from unconsolidated affiliates, net	(3.0		)	13.6		—			—			10.6
EBITDA	$	375.0		$	31.2	$	34.1		$	(56.7	)	$	383.6

Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2020

Revenue Recognition [Abstract]

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

The following table summarizes our contract assets and contract liabilities (in millions):



	June 30, 2020		December 31, 2019
Contract assets (non-current)	$	1.2	$	1.2
Contract liabilities (current)⁽¹⁾	$	10.2	$	8.8
Contract liabilities (non-current)⁽¹⁾	$	159.6	$	144.7

(1)

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

The following table summarizes the transaction price allocated to our remaining performance obligations under certain contracts that have not been recognized as of June 30, 2020 (in millions):



Remainder of 2020	$	52.3
2021	94.1
2022	63.2
2023	8.0
2024	3.3
Total	$	220.9

Disaggregation of Revenue

Disaggregation of Revenues



	Three Months Ended June 30, 2020
	Gathering and Processing		Storage and Transportation		Marketing, Supply and Logistics		Intersegment Elimination			Total
Topic 606 revenues
Gathering
Natural gas	$	33.2	$	—	$	—	$	—		$	33.2
Crude oil	17.9		—		—		—			17.9
Water	18.3		—		—		—			18.3
Processing
Natural gas	7.1		—		—		—			7.1
Compression
Natural gas	5.7		—		—		—			5.7
Storage
Crude oil	0.4		1.1		—		(0.8		)	0.7
NGLs	—		—		3.6		—			3.6
Pipeline
Crude oil	—		1.3		—		(0.4		)	0.9
NGLs	—		—		0.2		—			0.2
Transportation
Crude oil	1.5		—		0.3		—			1.8
NGLs	—		—		2.6		—			2.6
Rail Loading
Crude oil	—		2.9		—		(1.2		)	1.7
Product Sales
Natural gas	6.9		—		15.5		(6.8		)	15.6
Crude oil	34.8		—		102.0		(7.1		)	129.7
NGLs	3.0		—		92.4		(0.3		)	95.1
Other	—		0.2		0.2		(0.1		)	0.3
Total Topic 606 revenues	128.8		5.5		216.8		(16.7		)	334.4
Non-Topic 606 revenues⁽¹⁾	—		—		18.3		—			18.3
Total revenues	$	128.8	$	5.5	$	235.1	$	(16.7	)	$	352.7


(1)	Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.



	Three Months Ended June 30, 2019
	Gathering and Processing		Storage and Transportation		Marketing, Supply and Logistics		Intersegment Elimination			Total
Topic 606 revenues
Gathering
Natural gas	$	42.9	$	—	$	—	$	—		$	42.9
Crude oil	15.1		—		—		—			15.1
Water	19.0		—		—		—			19.0
Processing
Natural gas	8.1		—		—		—			8.1
Compression
Natural gas	6.2		—		—		—			6.2
Storage
Crude oil	0.5		1.5		—		(0.5		)	1.5
NGLs	—		—		1.3		—			1.3
Pipeline
Crude oil	—		1.5		—		(0.5		)	1.0
Transportation
Crude oil	1.8		—		1.5		—			3.3
NGLs	—		—		2.1		—			2.1
Rail Loading
Crude oil	—		3.9		—		(1.4		)	2.5
Product Sales
Natural gas	10.9		—		7.9		(4.8		)	14.0
Crude oil	110.2		—		291.4		(16.0		)	385.6
NGLs	10.4		—		133.9		(4.5		)	139.8
Other	—		1.2		0.3		(0.9		)	0.6
Total Topic 606 revenues	225.1		8.1		438.4		(28.6		)	643.0
Non-Topic 606 revenues⁽¹⁾	—		—		40.4		—			40.4
Total revenues	$	225.1	$	8.1	$	478.8	$	(28.6	)	$	683.4


(1)	Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.



	Six Months Ended June 30, 2020
	Gathering and Processing		Storage and Transportation		Marketing, Supply and Logistics		Intersegment Elimination			Total
Topic 606 revenues
Gathering
Natural gas	$	77.0	$	—	$	—	$	—		$	77.0
Crude oil	44.4		—		—		—			44.4
Water	41.3		—		—		—			41.3
Processing
Natural gas	17.3		—		—		—			17.3
Compression
Natural gas	12.0		—		—		—			12.0
Storage
Crude oil	0.9		1.7		—		(1.2		)	1.4
NGLs	—		—		5.2		—			5.2
Pipeline
Crude oil	—		2.9		—		(0.9		)	2.0
NGLs	—		—		0.2		—			0.2
Transportation
Crude oil	3.5		—		1.9		—			5.4
NGLs	—		—		4.3		—			4.3
Rail Loading
Crude oil	—		6.3		—		(2.6		)	3.7
Product Sales
Natural gas	18.9		—		33.8		(18.5		)	34.2
Crude oil	155.9		—		352.2		(23.4		)	484.7
NGLs	12.5		—		252.7		(12.2		)	253.0
Other	—		0.7		0.7		(0.5		)	0.9
Total Topic 606 revenues	383.7		11.6		651.0		(59.3		)	987.0
Non-Topic 606 revenues⁽¹⁾	—		—		93.6		—			93.6
Total revenues	$	383.7	$	11.6	$	744.6	$	(59.3	)	$	1,080.6


(1)	Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.



	Six Months Ended June 30, 2019
	Gathering and Processing		Storage and Transportation		Marketing, Supply and Logistics		Intersegment Elimination			Total
Topic 606 revenues
Gathering
Natural gas	$	73.1	$	—	$	—	$	—		$	73.1
Crude oil	30.4		—		—		—			30.4
Water	35.8		—		—		—			35.8
Processing
Natural gas	10.6		—		—		—			10.6
Compression
Natural gas	12.2		—		—		—			12.2
Storage
Crude oil	1.0		2.9		—		(1.2		)	2.7
NGLs	—		—		2.6		—			2.6
Pipeline
Crude oil	—		3.2		—		(1.2		)	2.0
Transportation
Crude oil	3.3		—		3.0		—			6.3
NGLs	—		—		6.2		—			6.2
Rail Loading
Crude oil	—		11.1		—		(2.8		)	8.3
Product Sales
Natural gas	29.7		—		30.2		(11.4		)	48.5
Crude oil	241.8		—		581.5		(59.3		)	764.0
NGLs	22.3		—		355.4		(7.3		)	370.4
Other	—		2.3		0.3		(1.8		)	0.8
Total Topic 606 revenues	460.2		19.5		979.2		(85.0		)	1,373.9
Non-Topic 606 revenues⁽¹⁾	—		—		144.7		—			144.7
Total revenues	$	460.2	$	19.5	$	1,123.9	$	(85.0	)	$	1,518.6

(1)

Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.

Condensed Consolidating Financial Information (Tables)

6 Months Ended

Jun. 30, 2020

Condensed Financial Information Disclosure [Abstract]

Condensed Balance Sheet



Crestwood Midstream Partners LP
Condensed Consolidating Balance Sheet
June 30, 2020
(in millions)
(unaudited)
	Parent		Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Current assets:
Cash	$	0.4	$	—	$	5.7	$	—		$	6.1
Accounts receivable	—		146.5		19.3		—			165.8
Inventory	—		88.9		—		—			88.9
Other current assets	—		52.8		0.3		—			53.1
Total current assets	0.4		288.2		25.3		—			313.9

Property, plant and equipment, net	—		2,410.1		783.6		—			3,193.7
Goodwill and intangible assets, net	—		671.2		284.5		—			955.7
Operating lease right-of-use assets, net	—		41.5		2.7		—			44.2
Investments in consolidated affiliates	4,501.0		—		—		(4,501.0		)	—
Investments in unconsolidated affiliates	—		—		961.9		—			961.9
Other non-current assets	—		2.4		0.5		—			2.9
Total assets	$	4,501.4	$	3,413.4	$	2,058.5	$	(4,501.0	)	$	5,472.3

Liabilities and capital
Current liabilities:
Accounts payable	$	—	$	114.6	$	1.5	$	—		$	116.1
Other current liabilities	25.2		114.8		24.8		—			164.8
Total current liabilities	25.2		229.4		26.3		—			280.9

Long-term liabilities:
Long-term debt, less current portion	2,575.7		—		—		—			2,575.7
Other long-term liabilities	—		165.8		118.2		—			284.0
Deferred income taxes	—		0.6		—		—			0.6
Total liabilities	2,600.9		395.8		144.5		—			3,141.2

Interest of non-controlling partner in subsidiary	—		—		430.6		—			430.6
Partners’ capital	1,900.5		3,017.6		1,483.4		(4,501.0		)	1,900.5
Total liabilities and capital	$	4,501.4	$	3,413.4	$	2,058.5	$	(4,501.0	)	$	5,472.3



Crestwood Midstream Partners LP
Condensed Consolidating Balance Sheet
December 31, 2019
(in millions)
	Parent		Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Current assets:
Cash	$	1.8	$	—	$	23.6	$	—		$	25.4
Accounts receivable	—		229.1		12.8		—			241.9
Inventory	—		53.7		—		—			53.7
Other current assets	—		54.6		0.2		—			54.8
Total current assets	1.8		337.4		36.6		—			375.8

Property, plant and equipment, net	—		2,331.3		736.2		—			3,067.5
Goodwill and intangible assets, net	—		650.7		373.4		—			1,024.1
Operating lease right-of-use assets, net	—		51.0		2.8		—			53.8
Investments in consolidated affiliates	4,451.6		—		—		(4,451.6		)	—
Investments in unconsolidated affiliates	—		—		980.4		—			980.4
Other non-current assets	—		1.9		0.5		—			2.4
Total assets	$	4,453.4	$	3,372.3	$	2,129.9	$	(4,451.6	)	$	5,504.0

Liabilities and capital
Current liabilities:
Accounts payable	$	—	$	175.9	$	10.7	$	—		$	186.6
Other current liabilities	25.8		123.9		17.6		—			167.3
Total current liabilities	25.8		299.8		28.3		—			353.9

Long-term liabilities:
Long-term debt, less current portion	2,328.3		—		—		—			2,328.3
Other long-term liabilities	—		174.8		120.8		—			295.6
Deferred income taxes	—		0.7		—		—			0.7
Total liabilities	2,354.1		475.3		149.1		—			2,978.5

Interest of non-controlling partner in subsidiary	—		—		426.2		—			426.2
Partners’ capital	2,099.3		2,897.0		1,554.6		(4,451.6		)	2,099.3
Total liabilities and capital	$	4,453.4	$	3,372.3	$	2,129.9	$	(4,451.6	)	$	5,504.0

Condensed Income Statement



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Operations
Three Months Ended June 30, 2020
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	336.5		$	16.2		$	—		$	352.7
Costs of product/services sold	—			225.5			0.2			—			225.7
Operating expenses and other:
Operations and maintenance	—			26.5			5.1			—			31.6
General and administrative	14.8			13.6			—			—			28.4
Depreciation, amortization and accretion	—			50.3			14.3			—			64.6
Loss on long-lived assets, net	—			2.0			1.8			—			3.8
	14.8			92.4			21.2			—			128.4
Operating income (loss)	(14.8		)	18.6			(5.2		)	—			(1.4		)
Earnings from unconsolidated affiliates, net	—			—			8.4			—			8.4
Interest and debt expense, net	(33.9		)	(0.1		)	—			—			(34.0		)
Equity in net income (loss) of subsidiaries	11.7			—			—			(11.7		)	—
Income (loss) before income taxes	(37.0		)	18.5			3.2			(11.7		)	(27.0		)
Benefit for income taxes	—			0.2			—			—			0.2
Net income (loss)	(37.0		)	18.7			3.2			(11.7		)	(26.8		)
Net income attributable to non-controlling partner in subsidiary	—			—			10.2			—			10.2
Net income (loss) attributable to Crestwood Midstream Partners LP	$	(37.0	)	$	18.7		$	(7.0	)	$	(11.7	)	$	(37.0	)



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Operations
Three Months Ended June 30, 2019
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	663.2		$	20.2		$	—		$	683.4
Costs of product/services sold	—			537.2			—			—			537.2
Operating expenses:
Operations and maintenance	—			27.5			7.2			—			34.7
General and administrative	9.7			11.2			—			—			20.9
Depreciation, amortization and accretion	—			43.0			9.7			—			52.7
Gain on acquisition	—			—			(209.4		)	—			(209.4		)
	9.7			81.7			(192.5		)	—			(101.1		)
Operating income (loss)	(9.7		)	44.3			212.7			—			247.3
Earnings from unconsolidated affiliates, net	—			—			3.7			—			3.7
Interest and debt expense, net	(28.0		)	0.2			—			—			(27.8		)
Equity in net income (loss) of subsidiaries	250.0			—			—			(250.0		)	—
Income (loss) before income taxes	212.3			44.5			216.4			(250.0		)	223.2
Provision for income taxes	—			(0.3		)	—			—			(0.3		)
Net income (loss)	212.3			44.2			216.4			(250.0		)	222.9
Net income attributable to non-controlling partner in subsidiary	—			—			10.6			—			10.6
Net income (loss) attributable to Crestwood Midstream Partners LP	$	212.3		$	44.2		$	205.8		$	(250.0	)	$	212.3



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Operations
Six Months Ended June 30, 2020
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	1,036.9		$	43.7		$	—		$	1,080.6
Costs of product/services sold	—			759.9			0.2			—			760.1
Operating expenses and other:
Operations and maintenance	—			58.3			10.9			—			69.2
General and administrative	32.7			9.2			—			—			41.9
Depreciation, amortization and accretion	—			98.1			26.1			—			124.2
Loss on long-lived assets, net	—			3.0			1.8			—			4.8
Goodwill impairment	—			—			80.3			—			80.3
	32.7			168.6			119.1			—			320.4
Operating income (loss)	(32.7		)	108.4			(75.6		)	—			0.1
Earnings from unconsolidated affiliates, net	—			—			13.9			—			13.9
Interest and debt expense, net	(66.3		)	(0.3		)	—			—			(66.6		)
Equity in net income (loss) of subsidiaries	26.5			—			—			(26.5		)	—
Income (loss) before income taxes	(72.5		)	108.1			(61.7		)	(26.5		)	(52.6		)
Benefit for income taxes	—			0.2			—			—			0.2
Net income (loss)	(72.5		)	108.3			(61.7		)	(26.5		)	(52.4		)
Net income attributable to non-controlling partner	—			—			20.1			—			20.1
Net income (loss) attributable to Crestwood Midstream Partners LP	$	(72.5	)	$	108.3		$	(81.8	)	$	(26.5	)	$	(72.5	)



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Operations
Six Months Ended June 30, 2019
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	1,498.4		$	20.2		$	—		$	1,518.6
Costs of product/services sold	—			1,232.8			—			—			1,232.8
Operating expenses and other:
Operations and maintenance	—			56.1			7.2			—			63.3
General and administrative	28.4			28.5			—			—			56.9
Depreciation, amortization and accretion	—			86.4			9.7			—			96.1
Loss on long-lived assets, net	—			2.0			—			—			2.0
Gain on acquisition	—			—			(209.4		)	—			(209.4		)
	28.4			173.0			(192.5		)	—			8.9
Operating income (loss)	(28.4		)	92.6			212.7			—			276.9
Earnings from unconsolidated affiliates, net	—			—			10.6			—			10.6
Interest and debt expense, net	(52.7		)	—			—			—			(52.7		)
Equity in net income (loss) of subsidiaries	301.0			—			—			(301.0		)	—
Income (loss) before income taxes	219.9			92.6			223.3			(301.0		)	234.8
Provision for income taxes	—			(0.3		)	—			—			(0.3		)
Net income (loss)	219.9			92.3			223.3			(301.0		)	234.5
Net income attributable to non-controlling partner in subsidiary	—			—			14.6			—			14.6
Net income (loss) attributable to Crestwood Midstream Partners LP	$	219.9		$	92.3		$	208.7		$	(301.0	)	$	219.9

Condensed Cash Flow Statement



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Cash Flows
Six Months Ended June 30, 2020
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Cash flows from operating activities	$	(96.4	)	$	197.4		$	80.1		$	—		$	181.1

Cash flows from investing activities:
Acquisition, net of cash acquired	—			(162.3		)	—			—			(162.3		)
Purchases of property, plant and equipment	—			(56.2		)	(87.0		)	—			(143.2		)
Investment in unconsolidated affiliates	—			—			(6.0		)	—			(6.0		)
Capital distributions from unconsolidated affiliates	—			—			18.9			—			18.9
Capital distributions from consolidated affiliates	8.2			—			—			(8.2		)	—
Other	—			(0.3		)	—			—			(0.3		)
Net cash provided by (used in) investing activities	8.2			(218.8		)	(74.1		)	(8.2		)	(292.9		)

Cash flows from financing activities:
Proceeds from the issuance of long-term debt	742.5			—			—			—			742.5
Payments on long-term debt	(498.2		)	—			—			—			(498.2		)
Payments on finance leases	—			(1.6		)	—			—			(1.6		)
Net proceeds from issuance of non-controlling interest	—			—			2.8			—			2.8
Distributions to partners	(119.0		)	—			(18.5		)	—			(137.5		)
Distributions to parent	—			—			(8.2		)	8.2			—
Taxes paid for unit-based compensation vesting	—			(15.5		)	—			—			(15.5		)
Change in intercompany balances	(38.5		)	38.5			—			—			—
Net cash provided by (used in) financing activities	86.8			21.4			(23.9		)	8.2			92.5

Net change in cash	(1.4		)	—			(17.9		)	—			(19.3		)
Cash at beginning of period	1.8			—			23.6			—			25.4
Cash at end of period	$	0.4		$	—		$	5.7		$	—		$	6.1



Crestwood Midstream Partners LP
Condensed Consolidating Statement of Cash Flows
Six Months Ended June 30, 2019
(in millions)
(unaudited)
	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Cash flows from operating activities	$	(87.1	)	$	309.5		$	(27.3	)	$	—		$	195.1

Cash flows from investing activities:
Acquisition, net of cash acquired	—			—			(462.1		)	—			(462.1		)
Purchases of property, plant and equipment	—			(127.7		)	(77.0		)	—			(204.7		)
Investment in unconsolidated affiliates	—			—			(40.9		)	—			(40.9		)
Capital distributions from unconsolidated affiliates	—			—			24.2			—			24.2
Capital contributions to consolidated affiliates	(217.1		)	—			—			217.1			—
Other	—			(0.5		)	—			—			(0.5		)
Net cash provided by (used in) investing activities	(217.1		)	(128.2		)	(555.8		)	217.1			(684.0		)

Cash flows from financing activities:
Proceeds from the issuance of long-term debt	1,544.0			—			—			—			1,544.0
Payments on long-term debt	(1,159.1		)	(0.4		)	—			—			(1,159.5		)
Payments on finance leases	—			(1.9		)	—			—			(1.9		)
Payments for debt-related deferred costs	(9.0		)	—			—			—			(9.0		)
Net proceeds from the issuance of non-controlling interest	—			—			235.0			—			235.0
Distributions to partners	(117.5		)	—			(6.6		)	—			(124.1		)
Contributions from parent	—			—			217.1			(217.1		)	—
Taxes paid for unit-based compensation vesting	—			(10.6		)	—			—			(10.6		)
Change in intercompany balances	30.7			(168.4		)	137.7			—			—
Net cash provided by (used in) financing activities	289.1			(181.3		)	583.2			(217.1		)	473.9

Net change in cash	(15.1		)	—			0.1			—			(15.0		)
Cash at beginning of period	16.5			—			—			—			16.5
Cash at end of period	$	1.4		$	—		$	0.1		$	—		$	1.5

Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
	Jan. 01, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 218.9		$ 218.9		$ 218.9
Goodwill impairment		$ 0.0		$ 0.0	80.3	$ 0.0
Goodwill, ending balance		138.6			138.6
Allowance for doubtful accounts		0.6			0.6		$ 0.3
Investments in unconsolidated affiliates		$ 961.9			$ 961.9		980.4
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Crestwood Permian Basin Holdings LLC
Goodwill [Roll Forward]
Ownership percentage	50.00%	50.00%			50.00%
Investments in unconsolidated affiliates		$ 114.7			$ 114.7		$ 121.8
Arrow
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 45.9		45.9		45.9
Goodwill impairment					0.0
Goodwill, ending balance		45.9			45.9
Powder River Basin
Goodwill [Roll Forward]
Goodwill, beginning balance	80.3		80.3		80.3
Goodwill impairment			80.3		80.3
Goodwill, ending balance		0.0			0.0
NGL Marketing and Logistics
Goodwill [Roll Forward]
Goodwill, beginning balance	92.7		$ 92.7		92.7
Goodwill impairment					0.0
Goodwill, ending balance		$ 92.7			$ 92.7
Cumulative Effect, Period of Adoption, Adjustment
Goodwill [Roll Forward]
Allowance for doubtful accounts	0.7
Partners' capital	0.7
Cumulative Effect, Period of Adoption, Adjustment \| Crestwood Permian Basin Holdings LLC
Goodwill [Roll Forward]
Partners' capital	(0.2)
Investments in unconsolidated affiliates	$ 0.2

Acquisitions Acquisitions (Details) $ in Millions		1 Months Ended		3 Months Ended		6 Months Ended
Acquisitions Acquisitions (Details) $ in Millions	Apr. 09, 2019 USD ($)	Apr. 30, 2020 USD ($) Terminals MMBbls	Apr. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Business Acquisition [Line Items]
Net proceeds from issuance of non-controlling interest						$ 2.8	$ 235.0
Gain on acquisition				$ 0.0	$ 209.4	$ 0.0	$ 209.4
Crestwood Niobrara LLC
Business Acquisition [Line Items]
Net proceeds from issuance of non-controlling interest			$ 235.0
Percentage of voting rights acquired	100.00%
Crestwood Niobrara LLC \| Williams Partners LP
Business Acquisition [Line Items]
Additional voting rights acquired	50.00%
Percentage of voting rights acquired	100.00%
Jackalope Gas Gathering Services, L.L.C.
Business Acquisition [Line Items]
Ownership percentage			50.00%		50.00%		50.00%
Plains All American Pipeline, L.P.
Business Acquisition [Line Items]
Consideration transferred		$ 162.0
NGL Storage Capacity \| MMBbls		7
Liquid Petroleum Gas Terminals \| Terminals		7
Property plant and equipment		$ 160.0
Assets and liabilities, net		$ 2.0
Jackalope Gas Gathering Services, L.L.C.
Business Acquisition [Line Items]
Consideration transferred	$ 484.6

Certain Balance Sheet Information (Accrued Expenses and Other Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Apr. 30, 2019
Accrued Expenses and Other Liabilities [Line Items]
Contract Liabilities (Non-current)	$ 159.6	$ 144.7
Accrued expenses	35.1	61.6
Accrued property taxes	8.2	6.1
Tax payable	0.3	0.3
Interest payable	25.0	25.6
Accrued additions to property, plant and equipment	14.9	38.0
Business Combination, Contingent Consideration, Liability, Current	19.0	0.0
Operating Lease, Liability, Current	17.8	18.1
Capital leases		3.2
Finance Lease, Liability, Current	3.3
Deferred Revenue	10.2	8.8
Total accrued expenses and other liabilities	133.8	161.7
Business Combination, Contingent Consideration, Liability, Noncurrent	38.0	57.0
Long-term operating lease liabilities	32.9	41.5
Asset Retirement Obligations, Noncurrent	34.6	33.3
Other long-term liabilities	285.7	301.6
Crestwood Midstream Partners LP
Accrued Expenses and Other Liabilities [Line Items]
Contract Liabilities (Non-current)	159.6
Accrued expenses	33.7	60.3
Accrued property taxes	8.2	6.1
Tax payable	0.3	0.3
Interest payable	25.0	25.6
Accrued additions to property, plant and equipment	14.9	38.0
Business Combination, Contingent Consideration, Liability, Current	19.0	0.0
Operating Lease, Liability, Current	17.8	18.1
Capital leases		3.2
Finance Lease, Liability, Current	3.3
Deferred Revenue	10.2	8.8
Total accrued expenses and other liabilities	132.4	160.4
Business Combination, Contingent Consideration, Liability, Noncurrent	38.0
Long-term operating lease liabilities	32.9
Asset Retirement Obligations, Noncurrent	34.6
Other long-term liabilities	284.0	295.6
Jackalope Gas Gathering Services, L.L.C.
Accrued Expenses and Other Liabilities [Line Items]
Ownership percentage			50.00%	50.00%
Other Noncurrent Liabilities [Member]
Accrued Expenses and Other Liabilities [Line Items]
Other long-term liabilities	20.6	25.1
Other Noncurrent Liabilities [Member] \| Crestwood Midstream Partners LP
Accrued Expenses and Other Liabilities [Line Items]
Other long-term liabilities	$ 18.9	$ 19.1

Investments in Unconsolidated Affiliates Net Investments In and Earnings (Loss) from Unconsolidated Affiliates (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jan. 01, 2020	Dec. 31, 2019	Apr. 30, 2019	Apr. 09, 2019
Schedule of Equity Method Investments [Line Items]
Investment	$ 961.9			$ 961.9			$ 980.4
Earnings from unconsolidated affiliates, net	8.4		$ 3.7	13.9	$ 10.6
Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Investment	802.8			802.8			814.4
Earnings from unconsolidated affiliates, net	9.2		6.4	18.4	13.4
Difference between carrying amount and underlying equity	51.3			51.3
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Investment	0.0			0.0			0.0
Earnings from unconsolidated affiliates, net	0.0		$ 0.5	0.0	$ 3.7
Ownership percentage			50.00%		50.00%			50.00%
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Investment	40.6			40.6			35.9
Earnings from unconsolidated affiliates, net	0.1		$ 0.1	0.1	$ 0.3
Difference between carrying amount and underlying equity	23.4			23.4
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Investment	3.8			3.8			8.3
Earnings from unconsolidated affiliates, net	0.1	$ (4.5)	0.0	(4.4)	(0.1)
Difference between carrying amount and underlying equity		$ 5.5
Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Investment	114.7			114.7			$ 121.8
Earnings from unconsolidated affiliates, net	(1.0)		$ (3.3)	(0.2)	$ (6.7)
Difference between carrying amount and underlying equity	$ 9.7			$ 9.7
Ownership percentage	50.00%			50.00%		50.00%
Crestwood Niobrara LLC
Schedule of Equity Method Investments [Line Items]
Percentage of voting rights acquired									100.00%
Crestwood Niobrara LLC \| Williams Partners LP
Schedule of Equity Method Investments [Line Items]
Additional voting rights acquired									50.00%
Percentage of voting rights acquired									100.00%

Investments in Unconsolidated Affiliates Summarized Financial Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Apr. 09, 2019
Schedule of Equity Method Investments [Line Items]
Revenues	$ 352.7	$ 683.4	$ 1,080.6	$ 1,518.6
Operating Expenses	125.9	(103.1)	315.8	4.5
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (24.3)	$ 225.0	(47.7)	239.1
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Amortization			0.1
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Amortization			0.6	0.3
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Amortization				0.2
Crestwood Niobrara LLC \| Williams Partners LP
Schedule of Equity Method Investments [Line Items]
Additional voting rights acquired					50.00%
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Equity Method Investments [Line Items]
Revenues			129.1	134.5
Operating Expenses			115.0	102.6
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			15.2	31.0
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] \| Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Revenues			75.6	79.1
Operating Expenses			38.9	40.4
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			36.8	38.9
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] \| Other Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Revenues			53.5	55.4
Operating Expenses			76.1	62.2
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			$ (21.6)	$ (7.9)

Investments in Unconsolidated Affiliates Distributions and Contributions (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	Jul. 31, 2020	Jun. 30, 2020	Jun. 30, 2019
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		$ 38.2	$ 41.1
Payments to acquire equity method investments		6.0	40.9
Payments to Acquire Equity Method Investments Cash and Noncash Consideration			40.9
Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		30.0	25.4
Payments to acquire equity method investments		0.0	0.0
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		0.0	11.6
Payments to acquire equity method investments		0.0	24.4
Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		6.7	2.9
Payments to acquire equity method investments		0.0	10.0
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		1.4	1.2
Payments to acquire equity method investments		6.0	6.3
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		0.1	0.0
Payments to acquire equity method investments		$ 0.0	$ 0.2
Subsequent Event \| Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	$ 14.5
Subsequent Event \| Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	1.8
Subsequent Event \| Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	$ 3.0

Investments in Unconsolidated Affiliates Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jan. 01, 2020	Dec. 31, 2019	Apr. 30, 2019
Schedule of Equity Method Investments [Line Items]
Business Combination, Contingent Consideration, Liability, Current	$ 19.0			$ 0.0
Business Combination, Contingent Consideration, Liability, Noncurrent	38.0			57.0
Purchases of property, plant and equipment	143.2	$ 204.7
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Ownership percentage		50.00%			50.00%
Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 10.0
Ownership percentage	50.00%		50.00%
Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Business Combination, Contingent Consideration, Liability	$ 57.0
Business Combination, Contingent Consideration, Liability, Noncurrent	$ 38.0
Crestwood Equity Partners LP \| Crestwood Permian Basin Holdings
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%
Crestwood Midstream Partners LP
Schedule of Equity Method Investments [Line Items]
Business Combination, Contingent Consideration, Liability, Current	$ 19.0			$ 0.0
Business Combination, Contingent Consideration, Liability, Noncurrent	38.0
Purchases of property, plant and equipment	$ 143.2	$ 204.7

Risk Management (Risk Management Activities) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Revenue	$ 18.0	$ 40.2	$ 93.0	$ 144.3
Commodity contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative instruments not designated as hedging	$ 6.8	$ 9.9	$ 28.8	$ 7.0

Risk Management (Notional Amounts and Terms of Company's Derivative Financial Instruments) (Details) bcf in Millions, MMBbls in Millions	Jun. 30, 2020 MMBbls bcf	Dec. 31, 2019 MMBbls bcf
Propane Crude And Heating Oil \| Fixed Price Payor
Derivative [Line Items]
Derivative, notional amount \| MMBbls	64.4	33.5
Propane Crude And Heating Oil \| Fixed Price Receiver
Derivative [Line Items]
Derivative, notional amount \| MMBbls	69.8	36.6
Natural Gas [Member] \| Fixed Price Payor
Derivative [Line Items]
Derivative, notional amount \| bcf	10.2	3.7
Natural Gas [Member] \| Fixed Price Receiver
Derivative [Line Items]
Derivative, notional amount \| bcf	17.5	8.7

Risk Management Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Derivative [Line Items]
Collateral posted for commodity derivative instruments	$ 21.1	$ 16.9
Commodity contract
Derivative [Line Items]
Collateral posted for commodity derivative instruments	0.1	0.1
NYMEX Derivative Liability
Derivative [Line Items]
Derivative Asset	1.9
Derivative Liability		(28.8)
NYMEX Margin Deposit
Derivative [Line Items]
NYMEX margin deposits	26.8	40.4
Commodity contract with credit contingent features
Derivative [Line Items]
Aggregate fair value of commodity derivative instruments	$ 20.3	$ 1.6

Risk Management (Narrative) (Details) - Price Risk Contracts Member - Maximum	6 Months Ended
	Jun. 30, 2020
Derivative [Line Items]
Remaining maturity	37 months
Percent of contracts expiring in the next twelve months	83.00%

Fair Value Measurements (Schedule of Carrying Values and Estimated Fair Values of Senior Notes) (Details) - Crestwood Midstream Partners LP - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Senior Notes, 2023
Debt Instrument [Line Items]
Carrying amount	$ 695.9	$ 695.1
Fair value	623.0	714.0
Senior Notes, 2025
Debt Instrument [Line Items]
Carrying amount	495.0	494.4
Fair value	435.0	514.4
Senior Notes, due 2027
Debt Instrument [Line Items]
Carrying amount	592.6	592.1
Fair value	$ 499.2	$ 610.1

Fair Value Measurements (Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	$ 214.0	$ 167.7
SPH units	2.0	3.1
Assets, Fair Value Disclosure, Excluding Netting Adjustments	216.0	170.8
Netting agreements	(186.3)	(122.3)
Assets, Collateral/Margin Received or Paid	16.7	2.2
Assets from price risk management, total	44.4	43.2
Total assets at fair value	46.4	46.3
Liabilities from price risk management	207.5	154.7
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	207.5	154.7
Netting agreements	(186.3)	(122.3)
Liabilities, Collateral/Margin Received or Paid	11.0	25.7
Liabilities from price risk management, total	32.2	6.7
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	26.2	3.7
SPH units	2.0	3.1
Assets, Fair Value Disclosure, Excluding Netting Adjustments	28.2	6.8
Liabilities from price risk management	29.7	2.8
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	29.7	2.8
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	187.8	164.0
SPH units	0.0	0.0
Assets, Fair Value Disclosure, Excluding Netting Adjustments	187.8	164.0
Liabilities from price risk management	177.8	151.9
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	177.8	151.9
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	0.0	0.0
SPH units	0.0	0.0
Assets, Fair Value Disclosure, Excluding Netting Adjustments	0.0	0.0
Liabilities from price risk management	0.0	0.0
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	$ 0.0	$ 0.0

Long-Term Debt (Components Of Long-Term Debt) (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019	Apr. 30, 2019
Debt Instrument [Line Items]
Deferred finance costs, net	$ 25,900,000	$ 29,100,000
Total debt	2,575,900,000	2,328,500,000
Less: current portion	200,000	200,000
Total long-term debt, less current portion	2,575,700,000	2,328,300,000
Senior Notes \| Senior Notes, 2023
Debt Instrument [Line Items]
Senior notes	700,000,000.0	700,000,000.0
Senior Notes \| Senior Notes, 2025
Debt Instrument [Line Items]
Senior notes	500,000,000.0	500,000,000.0
Senior Notes \| Senior Notes, due 2027
Debt Instrument [Line Items]
Senior notes	600,000,000.0	600,000,000.0	$ 600,000,000
Other
Debt Instrument [Line Items]
Other	600,000	600,000
Revolving Credit Facility \| Crestwood Midstream Revolver
Debt Instrument [Line Items]
Credit Facility	$ 801,200,000	$ 557,000,000.0

Long-Term Debt (Narrative) (Detail)	1 Months Ended		6 Months Ended
Long-Term Debt (Narrative) (Detail)	Apr. 30, 2020 USD ($)	Apr. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2019
Debt Instrument [Line Items]
Senior Secured Leverage Ratio, maximum			3.75
Senior Secured Leverage Ratio			1.28
Senior Notes, due 2027
Debt Instrument [Line Items]
Proceeds from Issuance of Debt	$ 591,100,000
Crestwood Midstream Revolver
Debt Instrument [Line Items]
Consolidated Leverage Ratio Maximum			5.50
Crestwood Midstream Revolver \| Revolving Credit Facility
Debt Instrument [Line Items]
Available capacity			$ 424,900,000
Letters of credit outstanding			$ 23,900,000	$ 31,700,000
Debt, Weighted Average Interest Rate			2.44%	4.00%
Interest Coverage Ratio Minimum			2.50
Total Funded Debt to Consolidated Ebitda			4.16
Consolidated Ebitda To Consolidated Interest Expense			4.62
Line of Credit Facility, Increase (Decrease), Net		$ 250,000,000
Crestwood Midstream Revolver \| Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate			2.43%	3.96%
Crestwood Midstream Revolver \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate			4.50%	6.00%
Senior Notes \| Senior Notes, due 2027
Debt Instrument [Line Items]
Senior notes		$ 600,000,000	$ 600,000,000.0	$ 600,000,000.0
Debt Instrument, Interest Rate, Stated Percentage		5.625%
Senior Notes \| Senior Notes, 2025
Debt Instrument [Line Items]
Senior notes			500,000,000.0	500,000,000.0
Senior Notes \| Senior Notes, 2023
Debt Instrument [Line Items]
Senior notes			$ 700,000,000.0	$ 700,000,000.0
Jackalope Gas Gathering Services, L.L.C.
Debt Instrument [Line Items]
Ownership percentage		50.00%			50.00%

Earnings Per Limited Partner Unit (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Allocated to Limited Partners	$ (49.5)	$ 198.2	$ (97.8)	$ 193.3
Net Income (Loss) Allocated to Preferred Unit Holders	0.0	15.0	0.0	0.0
Net income attributable to preferred unit holders	15.0	15.0	30.0	30.0
Subordinated unitholders’ interest in net income	0.0	1.2	0.0	1.2
Net Income (Loss) Available to Common Stockholders, Diluted	$ (49.5)	$ 214.4	$ (97.8)	$ 194.5
Basic (units)	73.2	71.8	73.0	71.8
Dilutive units (units)	0.0	11.2	0.0	5.2
Weighted Average Limited Partnership Units Outstanding, Diluted	73.2	83.0	73.0	77.0
Basic (in dollars per share)	$ (0.68)	$ 2.76	$ (1.34)	$ 2.69
Diluted (in dollars per share)	$ (0.68)	$ 2.58	$ (1.34)	$ 2.53
Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	7.1	0.0	7.1	7.1
Dilutive units (units)	0.0	7.1		0.0
Niobrara Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive units (units)	0.0	3.4	0.0	4.5
Performance Shares
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.2	0.0	0.3	0.0
Dilutive units (units)	0.0	0.3	0.0	0.3
Subordinated Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.4	0.0	0.4	0.0
Dilutive units (units)	0.0	0.4	0.0	0.4
Crestwood Niobrara LLC \| Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	8.2	0.0	8.2	0.0

Partners' Capital (Schedule of Partners' Capital Account, Distributions) (Details) - USD ($) $ / shares in Units, $ in Millions									6 Months Ended
	May 15, 2020	May 08, 2020	Feb. 14, 2020	Feb. 07, 2020	May 15, 2019	May 08, 2019	Feb. 14, 2019	Feb. 07, 2019	Jun. 30, 2020	Jun. 30, 2019
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Date of Record		May 08, 2020		Feb. 07, 2020		May 08, 2019		Feb. 07, 2019
Distribution Made to Limited Partner, Distribution Date	May 15, 2020		Feb. 14, 2020		May 15, 2019		Feb. 14, 2019
Distribution Made to Member or Limited Partner, Distributions Paid, Per Unit	$ 0.625		$ 0.625		$ 0.60		$ 0.60
Distribution Made to Limited Partner, Cash Distributions Paid	$ 45.7		$ 45.3		$ 43.1		$ 43.1		$ 91.0	$ 86.2

Partners' Capital (Components of Net Income (Loss) Attributable to Non-Controlling Interests) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Distribution Made to Limited Partner [Line Items]
Distributions to non-controlling partner			$ 18.5	$ 6.6
Net income attributable to non-controlling partners in subsidiaries	$ (10.2)	$ (10.6)	(20.1)	(14.6)
Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Distributions to non-controlling partner			18.5	6.6
Net income attributable to non-controlling partners in subsidiaries	$ (10.2)	$ (10.6)	(20.1)	(14.6)
Crestwood Niobrara LLC
Distribution Made to Limited Partner [Line Items]
Distributions to non-controlling partner			$ 18.5	$ 6.6

Partners' Capital (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions												1 Months Ended			3 Months Ended	6 Months Ended
	Aug. 14, 2020	Aug. 07, 2020	Jul. 16, 2020	May 15, 2020	May 08, 2020	Feb. 14, 2020	Feb. 07, 2020	May 15, 2019	May 08, 2019	Feb. 14, 2019	Feb. 07, 2019	Jul. 31, 2020	Feb. 29, 2020	Apr. 30, 2019	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Apr. 09, 2019
Distribution Made to Limited Partner [Line Items]
Equity Offering Program Authorized Amount																$ 250.0
Distribution Made to Limited Partner, Distribution Date				May 15, 2020		Feb. 14, 2020		May 15, 2019		Feb. 14, 2019
Distribution Made to Limited Partner, Date of Record					May 08, 2020		Feb. 07, 2020		May 08, 2019		Feb. 07, 2019
Distributions to preferred unitholders																30.0	$ 30.0
Incentive Distribution, Distribution																91.0	86.2
Distributions to non-controlling partner																18.5	6.6
Distribution Made to Limited Partner, Cash Distributions Paid				$ 45.7		$ 45.3		$ 43.1		$ 43.1						91.0	86.2
Net proceeds from issuance of non-controlling interest																2.8	235.0
Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Incentive Distribution, Distribution																119.0	117.5
Distributions to non-controlling partner																18.5	6.6
Distribution Made to General Partner, Cash Distributions Paid																119.0	117.5
Net proceeds from issuance of non-controlling interest																2.8	235.0
Crestwood Niobrara LLC
Distribution Made to Limited Partner [Line Items]
Distributions to non-controlling partner																$ 18.5	6.6
Net proceeds from issuance of non-controlling interest														$ 235.0
Performance Shares
Distribution Made to Limited Partner [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period													184,528			405,620
Share-based Payment Arrangement, Noncash Expense															$ 0.6	$ 0.8
Common Units
Distribution Made to Limited Partner [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period																838,556
Subsequent Event
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Distribution Date	Aug. 14, 2020
Distribution Made to Limited Partner, Date of Record		Aug. 07, 2020
Distributions to preferred unitholders			$ 15.0
Subsequent Event \| Crestwood Niobrara LLC
Distribution Made to Limited Partner [Line Items]
Distributions to non-controlling partner												$ 9.3
Cash Distribution \| Subsequent Event
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit			$ 0.625
Crestwood LTIP
Distribution Made to Limited Partner [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount															$ 3.7	$ 3.7
Williams Partners LP \| Crestwood Niobrara LLC
Distribution Made to Limited Partner [Line Items]
Additional voting rights acquired																		50.00%
Series A-3
Distribution Made to Limited Partner [Line Items]
Net proceeds from issuance of non-controlling interest														$ 235.0			$ 235.0
Non-Controlling Partners
Distribution Made to Limited Partner [Line Items]
Net proceeds from issuance of non-controlling interest																$ 2.8

Partners' Capital Rollforward of non-controlling interest (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity, Net Income				$ 20.1	$ 10.6
Interest of non-controlling partner in subsidiary		$ 424.4		430.6	424.4	$ 426.2	$ 0.0
Non-controlling interest reclassification (Note 10)					178.8
Net proceeds from issuance of non-controlling interest				2.8	235.0
Crestwood Niobrara LLC
Increase (Decrease) in Temporary Equity [Roll Forward]
Net proceeds from issuance of non-controlling interest	$ 235.0
Non-Controlling Partners
Increase (Decrease) in Temporary Equity [Roll Forward]
Partners' Capital Account, Distributions		(3.3)	$ (3.3)
Non-controlling interest reclassification (Note 10)		$ (178.8)
Non-Controlling Partners
Increase (Decrease) in Temporary Equity [Roll Forward]
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders				(18.5)
Net proceeds from issuance of non-controlling interest				$ 2.8
Series A-3
Increase (Decrease) in Temporary Equity [Roll Forward]
Net proceeds from issuance of non-controlling interest	$ 235.0				$ 235.0

Commitments and Contingencies (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Loss Contingency, Damages Sought, Value	$ 55.0
Loss Contingency Accrual, at Carrying Value	10.9	$ 10.7
Crestwood Midstream Partners LP
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Self Insurance Reserve	8.3	$ 8.3
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	$ 5.2

Commitments and Contingencies Environmental Compliance (Details) $ in Millions	1 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2019 bbl Release	Jun. 30, 2020 USD ($) miles	Dec. 31, 2014 bbl Release	Dec. 31, 2019 USD ($)	Sep. 15, 2015 USD ($)	May 31, 2015 bbl
Site Contingency [Line Items]
Miles of Water Gathering Pipeline Removed \| miles		30
Fort Berthold Indian Reservation
Site Contingency [Line Items]
Site Contingency, Loss Exposure, Number of Releases of Produced Water \| Release	2		3
Site Contingency, Loss Exposure, Release of Produced Water \| bbl	5,000		28,000			5,200
Accrual for Environmental Loss Contingencies		$ 3.8		$ 6.7
Maximum
Site Contingency [Line Items]
Loss Contingency, Estimate of Possible Loss					$ 1.1
Maximum \| Fort Berthold Indian Reservation
Site Contingency [Line Items]
Site Contingency, Loss Exposure in Excess of Accrual, Best Estimate		$ 8.0

Commitments and Contingencies Self Insurance (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Crestwood Equity Partners LP
Other Commitments [Line Items]
Self Insurance Reserve	$ 9.4	$ 9.7
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	6.2
Crestwood Midstream Partners LP
Other Commitments [Line Items]
Self Insurance Reserve	8.3	$ 8.3
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	$ 5.2

Commitments and Contingencies Leases (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating Lease, Expense	$ 7.1	$ 7.3	$ 14.6	$ 14.6
Operating lease, right-of-use assets, net	44.2		44.2		$ 53.8
Accrued expenses and other liabilities	133.8		133.8		161.7
Long-term operating lease liabilities	32.9		32.9		41.5
Property, plant and equipment	3,829.2		3,829.2		3,612.5
Less: accumulated depreciation	786.8		786.8		703.4
Property, plant and equipment, net	3,042.4		3,042.4		2,909.1
Other long-term liabilities	285.7		285.7		301.6
Finance Lease Expense	1.1	$ 1.1	2.2	$ 2.2
Operating Leases
Lessee, Lease, Description [Line Items]
Operating lease, right-of-use assets, net	44.2		44.2		53.8
Accrued expenses and other liabilities	17.8		17.8		18.1
Long-term operating lease liabilities	32.9		32.9		41.5
Operating lease, liability	50.7		50.7		59.6
Finance Lease
Lessee, Lease, Description [Line Items]
Accrued expenses and other liabilities	3.3		3.3		3.2
Property, plant and equipment	14.9		14.9		14.9
Less: accumulated depreciation	7.2		7.2		5.4
Property, plant and equipment, net	7.7		7.7		9.5
Other long-term liabilities	3.6		3.6		5.2
Finance Lease, Liability	$ 6.9		$ 6.9		$ 8.4

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Related Party Transaction [Line Items]
Purchases of property, plant and equipment			$ (143.2)	$ (204.7)
Operations and maintenance expenses charged by CEQP and CMLP	$ 5.5	$ 5.9	11.7	13.4
Tres Palacios Holdings LLC
Related Party Transaction [Line Items]
Costs of product/services sold at CEQP and CMLP	0.1		0.1
Applied Consultants, Inc.
Related Party Transaction [Line Items]
Purchases of property, plant and equipment			(2.9)	(5.1)
Ascent Resources - Utica, LLC
Related Party Transaction [Line Items]
Costs of product/services sold at CEQP and CMLP	0.3	0.1	0.3	23.9
Stagecoach Gas Services LLC
Related Party Transaction [Line Items]
Revenues at CEQP and CMLP		1.3		2.5
Costs of product/services sold at CEQP and CMLP		0.1		2.3
Crestwood Permian Basin Holdings LLC
Related Party Transaction [Line Items]
Revenues at CEQP and CMLP	7.5		15.0
Costs of product/services sold at CEQP and CMLP	3.2	0.9	6.4	9.1
Affiliated Entity
Related Party Transaction [Line Items]
Revenues at CEQP and CMLP	7.5	1.3	15.0	2.5
Costs of product/services sold at CEQP and CMLP	3.6	0.9	6.8	35.3
General and administrative expenses charged by CEQP to CMLP, net	10.9	10.1	18.0	21.1
Related Party Transaction, Due from (to) Related Party [Abstract]
Related party receivables	10.9		10.9		$ 7.3
Related party payables	6.9		6.9		15.6
Crestwood Equity Partners LP
Related Party Transaction [Line Items]
General and administrative expenses at CEQP charged to (from) Crestwood Holdings, net	(1.5)	(0.1)	11.3	(5.3)
Crestwood Equity Partners LP \| Affiliated Entity
Related Party Transaction [Line Items]
General and administrative expenses charged by CEQP to CMLP, net	0.2	0.1	0.4	0.3
Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Purchases of property, plant and equipment			(143.2)	(204.7)
Revenues at CEQP and CMLP	0.1	0.0	0.3	0.0
Crestwood Midstream Partners LP \| Affiliated Entity
Related Party Transaction [Line Items]
General and administrative expenses charged by CEQP to CMLP, net	1.0	0.9	2.1	1.8
Related Party Transaction, Due from (to) Related Party [Abstract]
Related party payables	4.5		4.5		$ 13.1
Crestwood LTIP \| Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Share-based Payment Arrangement, Expense	11.9	11.0	20.1	22.9
Crestwood LTIP \| Crestwood Holdings
Related Party Transaction [Line Items]
Share-based Payment Arrangement, Expense	1.7	0.2	10.9	5.6
Stagecoach Gas Services LLC
Related Party Transaction [Line Items]
Operations and maintenance expenses charged by CEQP and CMLP	1.6	1.9	3.3	3.9
Tres Palacios Holdings LLC
Related Party Transaction [Line Items]
Operations and maintenance expenses charged by CEQP and CMLP	1.1	1.0	2.2	2.2
Crestwood Permian Basin Holdings LLC
Related Party Transaction [Line Items]
Operations and maintenance expenses charged by CEQP and CMLP	$ 2.8	$ 3.0	$ 6.2	6.8
Jackalope Gas Gathering Services, L.L.C.
Related Party Transaction [Line Items]
Operations and maintenance expenses charged by CEQP and CMLP				$ 0.5

Segments (Reconciliation of Net Income (Loss) to EBITDA) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of Operating Segments \| segment			3
Net income (loss)	$ (24.3)	$ 225.0	$ (47.7)	$ 239.1
Interest and debt expense, net	34.0	27.8	66.6	52.7
Income Tax Expense (Benefit)	(0.1)	0.3	(0.1)	0.3
Depreciation, amortization and accretion	61.0	49.3	117.1	89.1
EBITDA	70.6	302.4	135.9	381.2
Crestwood Midstream Partners LP
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net income (loss)	(26.8)	222.9	(52.4)	234.5
Interest and debt expense, net	34.0	27.8	66.6	52.7
Income Tax Expense (Benefit)	(0.2)	0.3	(0.2)	0.3
Depreciation, amortization and accretion	64.6	52.7	124.2	96.1
EBITDA	$ 71.6	$ 303.7	$ 138.2	$ 383.6

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

+ Details

Segments (Summary Of Segment Information) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Net income (loss)	$ (24.3)	$ 225.0	$ (47.7)	$ 239.1
Number of Operating Segments \| segment			3
Depreciation, amortization and accretion	61.0	49.3	$ 117.1	89.1
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(352.7)	(683.4)	(1,080.6)	(1,518.6)
Costs of product/services sold	225.7	537.2	760.1	1,232.8
Operations and maintenance	31.6	34.7	69.2	63.3
General and administrative	29.5	22.3	44.4	59.5
Gain (loss) on long-lived assets	(3.8)	0.0	(4.8)	(2.0)
Goodwill impairment	0.0	0.0	(80.3)	0.0
Gain on acquisition	0.0	209.4	0.0	209.4
Earnings from unconsolidated affiliates, net	8.4	3.7	13.9	10.6
Other income, net	0.1	0.1	0.2	0.2
EBITDA	70.6	302.4	135.9	381.2
Goodwill	138.6		138.6		$ 218.9
Total assets	5,323.7		5,323.7		5,349.3
Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues				(1,123.9)
Crestwood Midstream Partners LP
Net income (loss)	(26.8)	222.9	(52.4)	234.5
Depreciation, amortization and accretion	64.6	52.7	124.2	96.1
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(352.7)	(683.4)	(1,080.6)	(1,518.6)
Costs of product/services sold	225.7	537.2	760.1	1,232.8
Operations and maintenance	31.6	34.7	69.2	63.3
General and administrative	28.4	20.9	41.9	56.9
Gain (loss) on long-lived assets	(3.8)	0.0	(4.8)	(2.0)
Goodwill impairment	0.0	0.0	(80.3)	0.0
Gain on acquisition	0.0	209.4	0.0	209.4
Earnings from unconsolidated affiliates, net	8.4	3.7	13.9	10.6
EBITDA	71.6	303.7	138.2	383.6
Goodwill	138.6		138.6		218.9
Total assets	5,472.3		5,472.3		$ 5,504.0
Intersegment Eliminations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	16.7	28.6	59.3	85.0
Intersegment Eliminations \| Gathering and Processing Operations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(14.3)	(25.4)	(54.3)	(78.2)
Intersegment Eliminations \| Storage and Transportation
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(2.4)	(3.2)	(5.0)	(6.8)
Intersegment Eliminations \| Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	16.7	28.6	59.3	85.0
Intersegment Eliminations \| Crestwood Midstream Partners LP \| Gathering and Processing Operations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(14.3)	(25.4)	(54.3)	(78.2)
Intersegment Eliminations \| Crestwood Midstream Partners LP \| Storage and Transportation
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(2.4)	(3.2)	(5.0)	(6.8)
Intersegment Eliminations \| Crestwood Midstream Partners LP \| Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	16.7	28.6	59.3	85.0
Corporate and Eliminations [Member]
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	0.0	0.0	0.0	0.0
Corporate and Eliminations [Member] \| Crestwood Midstream Partners LP
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	0.0	0.0	0.0	0.0
Operating Segments \| Gathering and Processing Operations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(114.5)	(199.7)	(329.4)	(382.0)
Costs of product/services sold	21.3	108.9	129.6	246.9
Operations and maintenance	19.3	24.6	46.3	42.7
General and administrative	0.0	0.0	0.0	0.0
Gain (loss) on long-lived assets	(3.6)	(0.2)	(4.6)	(2.0)
Goodwill impairment			(80.3)
Gain on acquisition		209.4		209.4
Earnings from unconsolidated affiliates, net	(1.0)	(2.8)	(0.2)	(3.0)
Other income, net	0.0	0.0	0.0	0.0
EBITDA	83.6	298.0	122.7	375.0
Goodwill	45.9		45.9
Total assets	3,589.8		3,589.8
Operating Segments \| Storage and Transportation
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(3.1)	(4.9)	(6.6)	(12.7)
Costs of product/services sold	0.1	0.0	0.3	0.0
Operations and maintenance	0.7	0.9	2.1	1.9
General and administrative	0.0	0.0	0.0	0.0
Gain (loss) on long-lived assets	0.0	0.0	0.0	0.0
Goodwill impairment			0.0
Gain on acquisition		0.0		0.0
Earnings from unconsolidated affiliates, net	9.4	6.5	14.1	13.6
Other income, net	0.0	0.0	0.0	0.0
EBITDA	14.1	13.7	23.3	31.2
Goodwill	0.0		0.0
Total assets	964.7		964.7
Operating Segments \| Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(235.1)	(478.8)	(744.6)	(1,123.9)
Costs of product/services sold	204.3	428.3	630.2	985.9
Operations and maintenance	11.6	9.2	20.8	18.7
General and administrative	0.0	0.0	0.0	0.0
Gain (loss) on long-lived assets	(0.2)	0.0	(0.2)	(0.2)
Goodwill impairment			0.0
Gain on acquisition		0.0		0.0
Earnings from unconsolidated affiliates, net	0.0	0.0	0.0	0.0
Other income, net	0.0	0.0	0.0	0.0
EBITDA	2.3	12.7	34.1	34.1
Goodwill	92.7		92.7
Total assets	736.9		736.9
Operating Segments \| Crestwood Midstream Partners LP \| Gathering and Processing Operations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(114.5)	(199.7)	(329.4)	(382.0)
Costs of product/services sold	21.3	108.9	129.6	246.9
Operations and maintenance	19.3	24.6	46.3	42.7
General and administrative	0.0	0.0	0.0	0.0
Gain (loss) on long-lived assets	(3.6)	(0.2)	(4.6)	(2.0)
Goodwill impairment			(80.3)
Gain on acquisition		209.4		209.4
Earnings from unconsolidated affiliates, net	(1.0)	(2.8)	(0.2)	(3.0)
EBITDA	83.6	298.0	122.7	375.0
Goodwill	45.9		45.9
Total assets	3,742.1		3,742.1
Operating Segments \| Crestwood Midstream Partners LP \| Storage and Transportation
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(3.1)	(4.9)	(6.6)	(12.7)
Costs of product/services sold	0.1	0.0	0.3	0.0
Operations and maintenance	0.7	0.9	2.1	1.9
General and administrative	0.0	0.0	0.0	0.0
Gain (loss) on long-lived assets	0.0	0.0	0.0	0.0
Goodwill impairment			0.0
Gain on acquisition		0.0		0.0
Earnings from unconsolidated affiliates, net	9.4	6.5	14.1	13.6
EBITDA	14.1	13.7	23.3	31.2
Goodwill	0.0		0.0
Total assets	964.7		964.7
Operating Segments \| Crestwood Midstream Partners LP \| Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	(235.1)	(478.8)	(744.6)	(1,123.9)
Costs of product/services sold	204.3	428.3	630.2	985.9
Operations and maintenance	11.6	9.2	20.8	18.7
General and administrative	0.0	0.0	0.0	0.0
Gain (loss) on long-lived assets	(0.2)	0.0	(0.2)	(0.2)
Goodwill impairment			0.0
Gain on acquisition		0.0		0.0
Earnings from unconsolidated affiliates, net	0.0	0.0	0.0	0.0
EBITDA	2.3	12.7	34.1	34.1
Goodwill	92.7		92.7
Total assets	736.9		736.9
Corporate, Non-Segment
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	0.0	0.0	0.0	0.0
Costs of product/services sold	0.0	0.0	0.0	0.0
Operations and maintenance	0.0	0.0	0.0	0.0
General and administrative	29.5	22.3	44.4	59.5
Gain (loss) on long-lived assets	0.0	0.2	0.0	0.2
Goodwill impairment			0.0
Gain on acquisition		0.0		0.0
Earnings from unconsolidated affiliates, net	0.0	0.0	0.0	0.0
Other income, net	0.1	0.1	0.2	0.2
EBITDA	(29.4)	(22.0)	(44.2)	(59.1)
Goodwill	0.0		0.0
Total assets	32.3		32.3
Corporate, Non-Segment \| Crestwood Midstream Partners LP
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	0.0	0.0	0.0	0.0
Costs of product/services sold	0.0	0.0	0.0	0.0
Operations and maintenance	0.0	0.0	0.0	0.0
General and administrative	28.4	20.9	41.9	56.9
Gain (loss) on long-lived assets	0.0	0.2	0.0	0.2
Goodwill impairment			0.0
Gain on acquisition		0.0		0.0
Earnings from unconsolidated affiliates, net	0.0	0.0	0.0	0.0
EBITDA	(28.4)	$ (20.7)	(41.9)	$ (56.7)
Goodwill	0.0		0.0
Total assets	$ 28.6		$ 28.6

Segments (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Segments (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Interest, taxes, depreciation and amortization included in earnings from equity method investments	$ 9.5	$ 10.3	$ 23.3	$ 23.0

Revenue Recognition Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Revenue Recognition [Abstract]
ASC 606 accounts receivable	$ 158.3	$ 225.0

Revenue Recognition Contract Assets and Liabilities (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Contract Assets (Non-current)	$ 1.2	$ 1.2	$ 1.2
Contract Liabilities (Current)	10.2	10.2	8.8
Contract Liabilities (Non-current)	159.6	159.6	$ 144.7
Contract with Customer, Liability, Revenue Recognized	$ 3.1	$ 6.9

Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 352.7	$ 683.4	$ 1,080.6	$ 1,518.6
Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue including intersegment eliminations	128.8	225.1	383.7	460.2
Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue including intersegment eliminations	5.5	8.1	11.6	19.5
Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenues				1,123.9
Revenue including intersegment eliminations	235.1	478.8	744.6
Natural Gas Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	33.2	42.9	77.0	73.1
Natural Gas Gathering \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	33.2	42.9	77.0	73.1
Natural Gas Gathering \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Natural Gas Gathering \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Crude Oil Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	17.9	15.1	44.4	30.4
Crude Oil Gathering \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	17.9	15.1	44.4	30.4
Crude Oil Gathering \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Crude Oil Gathering \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Water Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	18.3	19.0	41.3	35.8
Water Gathering \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	18.3	19.0	41.3	35.8
Water Gathering \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Water Gathering \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Natural Gas Processing
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	7.1	8.1	17.3	10.6
Natural Gas Processing \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	7.1	8.1	17.3	10.6
Natural Gas Processing \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Natural Gas Processing \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Natural Gas Compression
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	5.7	6.2	12.0	12.2
Natural Gas Compression \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	5.7	6.2	12.0	12.2
Natural Gas Compression \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Natural Gas Compression \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Crude Oil Storage
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.7	1.5	1.4	2.7
Crude Oil Storage \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.4	0.5	0.9	1.0
Crude Oil Storage \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.1	1.5	1.7	2.9
Crude Oil Storage \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
NGL Storage
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3.6	1.3	5.2	2.6
NGL Storage \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
NGL Storage \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
NGL Storage \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3.6	1.3	5.2	2.6
Crude Oil Pipeline
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.9	1.0	2.0	2.0
Crude Oil Pipeline \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Crude Oil Pipeline \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.3	1.5	2.9	3.2
Crude Oil Pipeline \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
NGL Pipeline
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.2		0.2
NGL Pipeline \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0		0.0
NGL Pipeline \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0		0.0
NGL Pipeline \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.2		0.2
Crude Oil Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.8	3.3	5.4	6.3
Crude Oil Transportation \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.5	1.8	3.5	3.3
Crude Oil Transportation \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Crude Oil Transportation \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.3	1.5	1.9	3.0
NGL Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2.6	2.1	4.3	6.2
NGL Transportation \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
NGL Transportation \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
NGL Transportation \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2.6	2.1	4.3	6.2
Crude Oil Rail Loading
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.7	2.5	3.7	8.3
Crude Oil Rail Loading \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Crude Oil Rail Loading \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2.9	3.9	6.3	11.1
Crude Oil Rail Loading \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Natural Gas Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	15.6	14.0	34.2	48.5
Natural Gas Product Sales \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	6.9	10.9	18.9	29.7
Natural Gas Product Sales \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Natural Gas Product Sales \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	15.5	7.9	33.8	30.2
Crude Oil Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	129.7	385.6	484.7	764.0
Crude Oil Product Sales \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	34.8	110.2	155.9	241.8
Crude Oil Product Sales \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Crude Oil Product Sales \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	102.0	291.4	352.2	581.5
NGL Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	95.1	139.8	253.0	370.4
NGL Product Sales \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3.0	10.4	12.5	22.3
NGL Product Sales \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
NGL Product Sales \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	92.4	133.9	252.7	355.4
Other revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.3	0.6	0.9	0.8
Other revenue \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Other revenue \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.2	1.2	0.7	2.3
Other revenue \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.2	0.3	0.7	0.3
Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(16.7)	(28.6)	(59.3)	(85.0)
Intersegment Eliminations \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenues	14.3	25.4	54.3	78.2
Intersegment Eliminations \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenues	2.4	3.2	5.0	6.8
Intersegment Eliminations \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenues	(16.7)	(28.6)	(59.3)	(85.0)
Intersegment Eliminations \| Natural Gas Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Intersegment Eliminations \| Crude Oil Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Intersegment Eliminations \| Water Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Intersegment Eliminations \| Natural Gas Processing
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Intersegment Eliminations \| Natural Gas Compression
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Intersegment Eliminations \| Crude Oil Storage
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(0.8)	(0.5)	(1.2)	(1.2)
Intersegment Eliminations \| NGL Storage
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Intersegment Eliminations \| Crude Oil Pipeline
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(0.4)	(0.5)	(0.9)	(1.2)
Intersegment Eliminations \| NGL Pipeline
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0		0.0
Intersegment Eliminations \| Crude Oil Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Intersegment Eliminations \| NGL Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.0	0.0	0.0	0.0
Intersegment Eliminations \| Crude Oil Rail Loading
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(1.2)	(1.4)	(2.6)	(2.8)
Intersegment Eliminations \| Natural Gas Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(6.8)	(4.8)	(18.5)	(11.4)
Intersegment Eliminations \| Crude Oil Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(7.1)	(16.0)	(23.4)	(59.3)
Intersegment Eliminations \| NGL Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(0.3)	(4.5)	(12.2)	(7.3)
Intersegment Eliminations \| Other revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(0.1)	(0.9)	(0.5)	(1.8)
Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	334.4	643.0	987.0	1,373.9
Revenue from Contract with Customer \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	128.8	225.1	383.7	460.2
Revenue from Contract with Customer \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	5.5	8.1	11.6	19.5
Revenue from Contract with Customer \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	216.8	438.4	651.0	979.2
Revenue from Contract with Customer \| Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(16.7)	(28.6)	(59.3)	(85.0)
Product and Service, Other
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	18.3	40.4	93.6	144.7
Product and Service, Other \| Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	0.0	0.0	0.0	0.0
Product and Service, Other \| Storage and Transportation
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	0.0	0.0	0.0	0.0
Product and Service, Other \| Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	18.3	40.4	93.6	144.7
Product and Service, Other \| Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	$ 0.0	$ 0.0	$ 0.0	$ 0.0

Revenue Recognition Remaining Performance Obligations (Details) $ in Millions	Jun. 30, 2020 USD ($)
Revenue Recognition [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 220.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue Recognition [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 52.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue Recognition [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 94.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue Recognition [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 63.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue Recognition [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 8.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue Recognition [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 3.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	17 years

Condensed Consolidating Financial Information (Balance Sheet) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash	$ 6.7	$ 25.7
Accounts receivable	165.9	242.2
Inventory	88.9	53.7
Total current assets	314.6	376.4
Property, plant and equipment, net	3,042.4	2,909.1
Operating lease, right-of-use assets, net	44.2	53.8
Investment	961.9	980.4
Other non-current assets	4.9	5.5
Total assets	5,323.7	5,349.3
Current liabilities:
Accounts payable	118.6	189.2
Total current liabilities	284.8	357.8
Long-term liabilities:
Long-term debt, less current portion	2,575.7	2,328.3
Other long-term liabilities	285.7	301.6
Deferred income taxes	2.3	2.6
Total liabilities	3,148.5	2,990.3
Interest of non-controlling partner in subsidiary	430.6	426.2	$ 424.4	$ 0.0
Total partners’ capital	1,744.6	1,932.8
Total liabilities and capital	5,323.7	5,349.3
Eliminations
Current assets:
Cash	0.0	0.0
Accounts receivable	0.0	0.0
Inventory	0.0	0.0
Other	0.0	0.0
Total current assets	0.0	0.0
Property, plant and equipment, net	0.0	0.0
Operating lease, right-of-use assets, net	0.0	0.0
Goodwill and intangible assets, net	0.0	0.0
Investment in consolidated affiliates	(4,501.0)	(4,451.6)
Investment	0.0	0.0
Other non-current assets	0.0	0.0
Total assets	(4,501.0)	(4,451.6)
Current liabilities:
Accounts payable	0.0	0.0
Other current liabilities	0.0	0.0
Total current liabilities	0.0	0.0
Long-term liabilities:
Long-term debt, less current portion	0.0	0.0
Other long-term liabilities	0.0	0.0
Deferred income taxes	0.0	0.0
Total liabilities	0.0	0.0
Interest of non-controlling partner in subsidiary (Note 10)		0.0
Interest of non-controlling partner in subsidiary	0.0
Partners' capital	(4,501.0)	(4,451.6)
Total liabilities and capital	(4,501.0)	(4,451.6)
Parent Company, Crestwood Midstream Partners, LP \| Reportable Legal Entities
Current assets:
Cash	0.4	1.8
Accounts receivable	0.0	0.0
Inventory	0.0	0.0
Other	0.0	0.0
Total current assets	0.4	1.8
Property, plant and equipment, net	0.0	0.0
Operating lease, right-of-use assets, net	0.0	0.0
Goodwill and intangible assets, net	0.0	0.0
Investment in consolidated affiliates	4,501.0	4,451.6
Investment	0.0	0.0
Other non-current assets	0.0	0.0
Total assets	4,501.4	4,453.4
Current liabilities:
Accounts payable	0.0	0.0
Other current liabilities	25.2	25.8
Total current liabilities	25.2	25.8
Long-term liabilities:
Long-term debt, less current portion	2,575.7	2,328.3
Other long-term liabilities	0.0	0.0
Deferred income taxes	0.0	0.0
Total liabilities	2,600.9	2,354.1
Interest of non-controlling partner in subsidiary (Note 10)		0.0
Interest of non-controlling partner in subsidiary	0.0
Partners' capital	1,900.5	2,099.3
Total liabilities and capital	4,501.4	4,453.4
Guarantor Subsidiaries \| Reportable Legal Entities
Current assets:
Cash	0.0	0.0
Accounts receivable	146.5	229.1
Inventory	88.9	53.7
Other	52.8	54.6
Total current assets	288.2	337.4
Property, plant and equipment, net	2,410.1	2,331.3
Operating lease, right-of-use assets, net	41.5	51.0
Goodwill and intangible assets, net	671.2	650.7
Investment in consolidated affiliates	0.0	0.0
Investment	0.0	0.0
Other non-current assets	2.4	1.9
Total assets	3,413.4	3,372.3
Current liabilities:
Accounts payable	114.6	175.9
Other current liabilities	114.8	123.9
Total current liabilities	229.4	299.8
Long-term liabilities:
Long-term debt, less current portion	0.0	0.0
Other long-term liabilities	165.8	174.8
Deferred income taxes	0.6	0.7
Total liabilities	395.8	475.3
Interest of non-controlling partner in subsidiary (Note 10)		0.0
Interest of non-controlling partner in subsidiary	0.0
Partners' capital	3,017.6	2,897.0
Total liabilities and capital	3,413.4	3,372.3
Non-Guarantor Subsidiaries \| Reportable Legal Entities
Current assets:
Cash	5.7	23.6
Accounts receivable	19.3	12.8
Inventory	0.0	0.0
Other	0.3	0.2
Total current assets	25.3	36.6
Property, plant and equipment, net	783.6	736.2
Operating lease, right-of-use assets, net	2.7	2.8
Goodwill and intangible assets, net	284.5	373.4
Investment in consolidated affiliates	0.0	0.0
Investment	961.9	980.4
Other non-current assets	0.5	0.5
Total assets	2,058.5	2,129.9
Current liabilities:
Accounts payable	1.5	10.7
Other current liabilities	24.8	17.6
Total current liabilities	26.3	28.3
Long-term liabilities:
Long-term debt, less current portion	0.0	0.0
Other long-term liabilities	118.2	120.8
Deferred income taxes	0.0	0.0
Total liabilities	144.5	149.1
Interest of non-controlling partner in subsidiary (Note 10)		426.2
Interest of non-controlling partner in subsidiary	430.6
Partners' capital	1,483.4	1,554.6
Total liabilities and capital	2,058.5	2,129.9
Crestwood Midstream Partners LP
Current assets:
Cash	6.1	25.4
Accounts receivable	165.8	241.9
Inventory	88.9	53.7
Other	53.1	54.8
Total current assets	313.9	375.8
Property, plant and equipment, net	3,193.7	3,067.5
Operating lease, right-of-use assets, net	44.2	53.8
Goodwill and intangible assets, net	955.7	1,024.1
Investment in consolidated affiliates	0.0	0.0
Investment	961.9	980.4
Other non-current assets	2.9	2.4
Total assets	5,472.3	5,504.0
Current liabilities:
Accounts payable	116.1	186.6
Other current liabilities	164.8	167.3
Total current liabilities	280.9	353.9
Long-term liabilities:
Long-term debt, less current portion	2,575.7	2,328.3
Other long-term liabilities	284.0	295.6
Deferred income taxes	0.6	0.7
Total liabilities	3,141.2	2,978.5
Interest of non-controlling partner in subsidiary (Note 10)		426.2
Interest of non-controlling partner in subsidiary	430.6
Partners' capital	1,900.5	2,099.3
Total liabilities and capital	$ 5,472.3	$ 5,504.0

Condensed Consolidating Financial Information (Statements Of Operations) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Expense (Benefit)	$ (0.1)	$ 0.3	$ (0.1)	$ 0.3
Revenues	352.7	683.4	1,080.6	1,518.6
Costs of product/services sold	225.7	537.2	760.1	1,232.8
Operating expenses and other:
Operations and maintenance	31.6	34.7	69.2	63.3
General and administrative	29.5	22.3	44.4	59.5
Depreciation, amortization and accretion	61.0	49.3	117.1	89.1
Loss on long-lived assets, net	3.8	0.0	4.8	2.0
Gain on acquisition	0.0	(209.4)	0.0	(209.4)
Goodwill impairment	0.0	0.0	80.3	0.0
Total expenses	125.9	(103.1)	315.8	4.5
Operating income (loss)	1.1	249.3	4.7	281.3
Earnings from unconsolidated affiliates, net	8.4	3.7	13.9	10.6
Interest and debt expense, net	(34.0)	(27.8)	(66.6)	(52.7)
Income (loss) before income taxes	(24.4)	225.3	(47.8)	239.4
Net income (loss)	(24.3)	225.0	(47.7)	239.1
Net income attributable to non-controlling partner in subsidiary	10.2	10.6	20.1	14.6
Net income (loss) attributable to parent	(34.5)	214.4	(67.8)	224.5
Eliminations
Income Tax Expense (Benefit)	0.0	0.0	0.0	0.0
Revenues	0.0	0.0	0.0	0.0
Costs of product/services sold	0.0	0.0	0.0	0.0
Operating expenses and other:
Operations and maintenance	0.0	0.0	0.0	0.0
General and administrative	0.0	0.0	0.0	0.0
Depreciation, amortization and accretion	0.0	0.0	0.0	0.0
Loss on long-lived assets, net	0.0		0.0	0.0
Gain on acquisition		0.0		0.0
Goodwill impairment			0.0
Total expenses	0.0	0.0	0.0	0.0
Operating income (loss)	0.0	0.0	0.0	0.0
Earnings from unconsolidated affiliates, net	0.0	0.0	0.0	0.0
Interest and debt expense, net	0.0	0.0	0.0	0.0
Loss from unconsolidated affiliates	(11.7)	(250.0)	(26.5)	(301.0)
Income (loss) before income taxes	(11.7)	(250.0)	(26.5)	(301.0)
Net income (loss)	(11.7)	(250.0)	(26.5)	(301.0)
Net income attributable to non-controlling partner in subsidiary	0.0	0.0	0.0	0.0
Net income (loss) attributable to parent	(11.7)	(250.0)	(26.5)	(301.0)
Non-Guarantor Subsidiaries \| Reportable Legal Entities
Income Tax Expense (Benefit)	0.0	0.0	0.0	0.0
Revenues	16.2	20.2	43.7	20.2
Costs of product/services sold	0.2	0.0	0.2	0.0
Operating expenses and other:
Operations and maintenance	5.1	7.2	10.9	7.2
General and administrative	0.0	0.0	0.0	0.0
Depreciation, amortization and accretion	14.3	9.7	26.1	9.7
Loss on long-lived assets, net	1.8		1.8	0.0
Gain on acquisition		209.4		209.4
Goodwill impairment			80.3
Total expenses	21.2	(192.5)	119.1	(192.5)
Operating income (loss)	(5.2)	212.7	(75.6)	212.7
Earnings from unconsolidated affiliates, net	8.4	3.7	13.9	10.6
Interest and debt expense, net	0.0	0.0	0.0	0.0
Loss from unconsolidated affiliates	0.0	0.0	0.0	0.0
Income (loss) before income taxes	3.2	216.4	(61.7)	223.3
Net income (loss)	3.2	216.4	(61.7)	223.3
Net income attributable to non-controlling partner in subsidiary	10.2	10.6	20.1	14.6
Net income (loss) attributable to parent	(7.0)	205.8	(81.8)	208.7
Crestwood Midstream Partners LP
Income Tax Expense (Benefit)	(0.2)	0.3	(0.2)	0.3
Revenues	352.7	683.4	1,080.6	1,518.6
Costs of product/services sold	225.7	537.2	760.1	1,232.8
Operating expenses and other:
Operations and maintenance	31.6	34.7	69.2	63.3
General and administrative	28.4	20.9	41.9	56.9
Depreciation, amortization and accretion	64.6	52.7	124.2	96.1
Loss on long-lived assets, net	3.8		4.8	2.0
Gain on acquisition		209.4		209.4
Goodwill impairment			80.3
Total expenses	128.4	(101.1)	320.4	8.9
Operating income (loss)	(1.4)	247.3	0.1	276.9
Earnings from unconsolidated affiliates, net	8.4	3.7	13.9	10.6
Interest and debt expense, net	(34.0)	(27.8)	(66.6)	(52.7)
Loss from unconsolidated affiliates	0.0	0.0	0.0	0.0
Income (loss) before income taxes	(27.0)	223.2	(52.6)	234.8
Net income (loss)	(26.8)	222.9	(52.4)	234.5
Net income attributable to non-controlling partner in subsidiary	10.2	10.6	20.1	14.6
Net income (loss) attributable to parent	(37.0)	212.3	(72.5)	219.9
Guarantor Subsidiaries \| Reportable Legal Entities
Income Tax Expense (Benefit)	(0.2)	0.3	(0.2)	0.3
Revenues	336.5	663.2	1,036.9	1,498.4
Costs of product/services sold	225.5	537.2	759.9	1,232.8
Operating expenses and other:
Operations and maintenance	26.5	27.5	58.3	56.1
General and administrative	13.6	11.2	9.2	28.5
Depreciation, amortization and accretion	50.3	43.0	98.1	86.4
Loss on long-lived assets, net	2.0		3.0	2.0
Gain on acquisition		0.0		0.0
Goodwill impairment			0.0
Total expenses	92.4	81.7	168.6	173.0
Operating income (loss)	18.6	44.3	108.4	92.6
Earnings from unconsolidated affiliates, net	0.0	0.0	0.0	0.0
Interest and debt expense, net	(0.1)	0.2	(0.3)	0.0
Loss from unconsolidated affiliates	0.0	0.0	0.0	0.0
Income (loss) before income taxes	18.5	44.5	108.1	92.6
Net income (loss)	18.7	44.2	108.3	92.3
Net income attributable to non-controlling partner in subsidiary	0.0	0.0	0.0	0.0
Net income (loss) attributable to parent	18.7	44.2	108.3	92.3
Parent Company, Crestwood Midstream Partners, LP \| Reportable Legal Entities
Income Tax Expense (Benefit)	0.0	0.0	0.0	0.0
Revenues	0.0	0.0	0.0	0.0
Costs of product/services sold	0.0	0.0	0.0	0.0
Operating expenses and other:
Operations and maintenance	0.0	0.0	0.0	0.0
General and administrative	14.8	9.7	32.7	28.4
Depreciation, amortization and accretion	0.0	0.0	0.0	0.0
Loss on long-lived assets, net	0.0		0.0	0.0
Gain on acquisition		0.0		0.0
Goodwill impairment			0.0
Total expenses	14.8	9.7	32.7	28.4
Operating income (loss)	(14.8)	(9.7)	(32.7)	(28.4)
Earnings from unconsolidated affiliates, net	0.0	0.0	0.0	0.0
Interest and debt expense, net	(33.9)	(28.0)	(66.3)	(52.7)
Loss from unconsolidated affiliates	11.7	250.0	26.5	301.0
Income (loss) before income taxes	(37.0)	212.3	(72.5)	219.9
Net income (loss)	(37.0)	212.3	(72.5)	219.9
Net income attributable to non-controlling partner in subsidiary	0.0	0.0	0.0	0.0
Net income (loss) attributable to parent	$ (37.0)	$ 212.3	$ (72.5)	$ 219.9

Condensed Consolidating Financial Information (Statements Of Cash Flows) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities	$ 183.4	$ 193.9
Cash flows from investing activities:
Acquisition, net of cash acquired	162.3	462.1
Purchases of property, plant and equipment	(143.2)	(204.7)
Investments in unconsolidated affiliates	(6.0)	(40.9)
Capital distributions from unconsolidated affiliates	18.9	24.2
Other	(0.3)	(0.5)
Net cash used in investing activities	(292.9)	(684.0)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	742.5	1,544.0
Payments on long-term debt	(498.2)	(1,159.5)
Payments on finance leases	(1.6)	(1.9)
Payments for debt-related deferred costs	0.0	(9.0)
Net proceeds from issuance of non-controlling interest	2.8	235.0
Distributions to partners	(91.0)	(86.2)
Taxes paid for unit-based compensation vesting	(15.5)	(10.6)
Net cash provided by financing activities	90.5	475.0
Net change in cash	(19.0)	(15.1)
Cash at beginning of period	25.7	17.2
Cash at end of period	6.7	2.1
Eliminations
Cash flows from operating activities	0.0	0.0
Cash flows from investing activities:
Acquisition, net of cash acquired	0.0	0.0
Purchases of property, plant and equipment	0.0	0.0
Investments in unconsolidated affiliates	0.0	0.0
Capital distributions from unconsolidated affiliates	0.0	0.0
Capital distributions from consolidated affiliates	(8.2)	217.1
Other	0.0	0.0
Net cash used in investing activities	(8.2)	217.1
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	0.0	0.0
Payments on long-term debt	0.0	0.0
Payments on finance leases	0.0	0.0
Payments for debt-related deferred costs		0.0
Net proceeds from issuance of non-controlling interest	0.0	0.0
Distributions to partners	0.0	0.0
Contributions from (distributions to) parent	8.2	(217.1)
Taxes paid for unit-based compensation vesting	0.0	0.0
Change in intercompany balances	0.0	0.0
Net cash provided by financing activities	8.2	(217.1)
Net change in cash	0.0	0.0
Cash at beginning of period	0.0	0.0
Cash at end of period	0.0	0.0
Non-Guarantor Subsidiaries \| Reportable Legal Entities
Cash flows from operating activities	80.1	(27.3)
Cash flows from investing activities:
Acquisition, net of cash acquired	0.0	462.1
Purchases of property, plant and equipment	(87.0)	(77.0)
Investments in unconsolidated affiliates	(6.0)	(40.9)
Capital distributions from unconsolidated affiliates	18.9	24.2
Capital distributions from consolidated affiliates	0.0	0.0
Other	0.0	0.0
Net cash used in investing activities	(74.1)	(555.8)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	0.0	0.0
Payments on long-term debt	0.0	0.0
Payments on finance leases	0.0	0.0
Payments for debt-related deferred costs		0.0
Net proceeds from issuance of non-controlling interest	2.8	235.0
Distributions to partners	(18.5)	(6.6)
Contributions from (distributions to) parent	(8.2)	217.1
Taxes paid for unit-based compensation vesting	0.0	0.0
Change in intercompany balances	0.0	137.7
Net cash provided by financing activities	(23.9)	583.2
Net change in cash	(17.9)	0.1
Cash at beginning of period	23.6	0.0
Cash at end of period	5.7	0.1
Parent Company, Crestwood Midstream Partners, LP \| Reportable Legal Entities
Cash flows from operating activities	(96.4)	(87.1)
Cash flows from investing activities:
Acquisition, net of cash acquired	0.0	0.0
Purchases of property, plant and equipment	0.0	0.0
Investments in unconsolidated affiliates	0.0	0.0
Capital distributions from unconsolidated affiliates	0.0	0.0
Capital distributions from consolidated affiliates	8.2	(217.1)
Other	0.0	0.0
Net cash used in investing activities	8.2	(217.1)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	742.5	1,544.0
Payments on long-term debt	(498.2)	(1,159.1)
Payments on finance leases	0.0	0.0
Payments for debt-related deferred costs		(9.0)
Net proceeds from issuance of non-controlling interest	0.0	0.0
Distributions to partners	(119.0)	(117.5)
Contributions from (distributions to) parent	0.0	0.0
Taxes paid for unit-based compensation vesting	0.0	0.0
Change in intercompany balances	(38.5)	30.7
Net cash provided by financing activities	86.8	289.1
Net change in cash	(1.4)	(15.1)
Cash at beginning of period	1.8	16.5
Cash at end of period	0.4	1.4
Crestwood Midstream Partners LP
Cash flows from operating activities	181.1	195.1
Cash flows from investing activities:
Acquisition, net of cash acquired	162.3	462.1
Purchases of property, plant and equipment	(143.2)	(204.7)
Investments in unconsolidated affiliates	(6.0)	(40.9)
Capital distributions from unconsolidated affiliates	18.9	24.2
Capital distributions from consolidated affiliates	0.0	0.0
Other	(0.3)	(0.5)
Net cash used in investing activities	(292.9)	(684.0)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	742.5	1,544.0
Payments on long-term debt	(498.2)	(1,159.5)
Payments on finance leases	(1.6)	(1.9)
Payments for debt-related deferred costs		(9.0)
Net proceeds from issuance of non-controlling interest	2.8	235.0
Distributions to partners	(137.5)	(124.1)
Contributions from (distributions to) parent	0.0	0.0
Taxes paid for unit-based compensation vesting	(15.5)	(10.6)
Change in intercompany balances	0.0	0.0
Net cash provided by financing activities	92.5	473.9
Net change in cash	(19.3)	(15.0)
Cash at beginning of period	25.4	16.5
Cash at end of period	6.1	1.5
Guarantor Subsidiaries \| Reportable Legal Entities
Cash flows from operating activities	197.4	309.5
Cash flows from investing activities:
Acquisition, net of cash acquired	162.3	0.0
Purchases of property, plant and equipment	(56.2)	(127.7)
Investments in unconsolidated affiliates	0.0	0.0
Capital distributions from unconsolidated affiliates	0.0	0.0
Capital distributions from consolidated affiliates	0.0	0.0
Other	(0.3)	(0.5)
Net cash used in investing activities	(218.8)	(128.2)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	0.0	0.0
Payments on long-term debt	0.0	(0.4)
Payments on finance leases	(1.6)	(1.9)
Payments for debt-related deferred costs		0.0
Net proceeds from issuance of non-controlling interest	0.0	0.0
Distributions to partners	0.0	0.0
Contributions from (distributions to) parent	0.0	0.0
Taxes paid for unit-based compensation vesting	(15.5)	(10.6)
Change in intercompany balances	38.5	(168.4)
Net cash provided by financing activities	21.4	(181.3)
Net change in cash	0.0	0.0
Cash at beginning of period	0.0	0.0
Cash at end of period	$ 0.0	$ 0.0