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Document And Entity Information	6 Months Ended
Document And Entity Information	Jun. 30, 2016 shares
Document Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Entity Registrant Name	Panhandle Eastern Pipe Line Co LP
Entity Central Index Key	0000076063
Document Period End Date	Jun. 30, 2016
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding	0

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 18	$ 3
Accounts receivable, net	39	48
Accounts receivable from related companies	70	172
Exchanges receivable	5	5
Inventories	132	113
Other current assets	4	9
Total current assets	268	350
Property, Plant and Equipment, Gross	3,340	3,338
Property, plant and equipment:
Accumulated depreciation	(324)	(286)
Net property, plant and equipment	3,016	3,052
Other non-current assets, net	143	137
Due from Affiliate, Noncurrent	258	258
Notes receivable from related parties	685	574
Goodwill	923	923
Total assets	5,293	5,294
Current liabilities:
Current maturities of long-term debt	1	1
Accounts payable and accrued liabilities	12	3
Accounts payable to related companies	54	125
Exchanges payable	110	94
Accrued interest	12	12
Customer advances and deposits	10	9
Other current liabilities	53	55
Total current liabilities	252	299
Long-term debt, less current maturities	1,153	1,165
Deferred income taxes	741	725
Other non-current liabilities	217	222
Commitments and contingencies
Partners’ capital:
Partners’ capital	2,928	2,881
Accumulated other comprehensive income	2	2
Total partners’ capital	2,930	2,883
Total liabilities and partners’ capital	$ 5,293	$ 5,294

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
OPERATING REVENUES:
Transportation and storage of natural gas	$ 120	$ 123	$ 256	$ 272
Other	4	5	9	11
Total operating revenues	124	128	265	283
OPERATING EXPENSES:
Cost of natural gas and other energy	1	1	2	3
Operating and maintenance	52	50	102	103
General and administrative	8	11	18	23
Depreciation and amortization	33	35	65	70
Total operating expenses	94	97	187	199
OPERATING INCOME	30	31	78	84
OTHER INCOME (EXPENSE):
Interest expense, net	(12)	(12)	(25)	(25)
Equity in earnings of unconsolidated affiliates	0	(6)	0	(2)
Interest income - affiliates	7	1	14	1
Other, net	(1)	5	0	4
Total other expenses, net	(6)	(12)	(11)	(22)
INCOME BEFORE INCOME TAX EXPENSE	24	19	67	62
Income tax expense	9	0	21	12
NET INCOME (LOSS)	15	19	46	50
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	15	$ 19	46	51
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	0		0	1
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 0		$ 0	$ 1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Income and Comprehensive Income
Net income	$ 15	$ 19	$ 46	$ 50

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

CONSOLIDATED STATEMENT OF PARTNERS' CAPITAL - USD ($) $ in Millions	Total	Limited partner	Accumulated Other Comprehensive Loss
Stockholders' Equity, Balance	$ 2,883	$ 2,881	$ 2
Net income	46	46	0
Stockholders' Equity, Balance	$ 2,930	$ 2,928	$ 2

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
OPERATING ACTIVITIES:
Net income	$ 46	$ 50
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	65	70
Deferred income taxes	15	(8)
Amortization included in interest expense	(12)	(12)
Losses from unconsolidated affiliates	0	2
Distributions of earnings received from unconsolidated affiliates	0	8
Other non-cash	5	7
Changes in operating assets and liabilities	31	(8)
Net Cash Provided by (Used in) Operating Activities	150	109
INVESTING ACTIVITIES:
Capital expenditures	(24)	(65)
Distributions from unconsolidated affiliates in excess of cumulative earnings	0	29
Repayment of note receivable from related party	(129)	(40)
Note receivable issued to related party	18	0
Net cash flows used in investing activities	(135)	(76)
Net change in cash and cash equivalents	15	33
Cash and cash equivalents, beginning of period	3	32
Cash and cash equivalents, end of period	$ 18	$ 65

Operations and Organization (Notes)

6 Months Ended

Jun. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Operations and Organization

ORGANIZATION AND BASIS OF PRESENTATION

Organization

Panhandle Eastern Pipe Line Company, LP and its subsidiaries are primarily engaged in the transportation of natural gas from the Gulf of Mexico, south Texas and the panhandle region of Texas and Oklahoma to major United States markets in the Midwest and Great Lakes regions and the storage of natural gas and are subject to the rules and regulations of the FERC. The Company’s subsidiaries are Trunkline, Sea Robin and Southwest Gas.

Southern Union Panhandle LLC, an indirect wholly-owned subsidiary of ETP, owns a 1% general partnership interest in PEPL and ETP indirectly owns a 99% limited partnership interest in PEPL.

Basis of Presentation

The unaudited financial information included in this Form 10-Q has been prepared on the same basis as the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K/A for the year ended December 31, 2015. In the opinion of the Company’s management, such financial information reflects all adjustments necessary for a fair presentation of the financial position and the results of operations for such interim periods in accordance with GAAP. All intercompany items and transactions have been eliminated in consolidation. 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.

Restatement of Previously Issued Financial Statements

In connection with the preparation of the Form 10-Q for the three and six months ended June 30, 2016, the Company determined that, due to certain clerical errors, the state tax rate utilized to calculate the tax provision for the Company was incorrect, resulting in income tax expense being understated by $20 million and $36 million for the years ended December 31, 2015 and 2014, respectively, and overstated by $1 million for the three months ended March 31, 2016. As a result, we have restated our consolidated financial statements, consolidated financial information and notes to the consolidated financial statements as of and for the years ended December 31, 2015 and 2014. Certain amounts that were previously reported by the Company with respect to the periods presented herein have been restated.

Unrelated to the matter above, the Company determined that interest income - affiliates was overstated by $9 million and income tax expense was overstated by $3 million for the three months ended March 31, 2016. The net impact of correcting this error is a $6 million decrease to net income for the three months ended March 31, 2016. The Company has separately filed a Form 10-Q/A to restate certain amounts related to both matters noted, for the three months ended March 31, 2016 and 2015.

The effects of the revision in the consolidated statements of operations and comprehensive income for the three and six month periods ended June 30, 2015 are summarized in the following table:



	Three Months Ended June 30, 2015					Six Months Ended June 30, 2015
	Previously Reported			As Restated		Previously Reported		As Restated
Income tax expense	$	25		$	—	$	37	$	12
Net Income (Loss)	(6		)	19		25		50
Comprehensive income (loss)	(6		)	19		25		51

The effects of the revisions in the consolidated statements of cash flows for the three and six month periods ended June 30, 2015 are summarized in the following table:



	Six Months Ended June 30, 2015
	Previously Reported		As Restated
Net income	$	25	$	50
Deferred income taxes	17		(8		)

Use of Estimates

The unaudited consolidated financial statements have been prepared in conformity with GAAP, which includes the use of estimates and assumptions made by management that affect the reported amounts of assets, liabilities, revenues, expenses and disclosure of contingent assets and liabilities that exist at the date of the consolidated financial statements. Although these estimates are based on management’s available knowledge of current and expected future events, actual results could be different from those estimates.

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which clarifies the principles for recognizing revenue based on the core principle that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, the FASB deferred the effective date of ASU 2014-09, which is now effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early adoption is permitted as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within those annual periods. ASU 2014-09 can be adopted either retrospectively to each prior reporting period presented or as a cumulative-effect adjustment as of the date of adoption. The Company is currently evaluating the impact, if any, that adopting this new accounting standard will have on our revenue recognition policies.

In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (Topic 842) (“ASU 2016-02”), which establishes the principles that lessees and lessors shall apply to report useful information to users of financial statements about the amount, timing, and uncertainty of cash flows arising from a lease. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact, if any, that adopting this new standard will have on the consolidated financial statements and related disclosures.

Related Party Transactions (Notes)

6 Months Ended

Jun. 30, 2016

Related Party Transactions

RELATED PARTY TRANSACTIONS

Accounts receivable from related companies reflected on the consolidated balance sheets primarily related to services provided to ETE, ETP and other affiliates. Accounts payable to related companies reflected on the consolidated balance sheets related to various services provided by ETP and other affiliates.

The following table provides a summary of the related party activity included in our consolidated statements of operations:



	Three Months Ended June 30,					Six Months Ended June 30,
	2016		2015			2016		2015
			(Restated)					(Restated)
Operating revenues	$	4	$	4		$	9	$	9
Operating and maintenance	3		4			7		8
General and administrative	7		8			14		16
Interest income — affiliates	7		1			14		1
Income from unconsolidated affiliates	—		(6		)	—		(2		)

The Company received $37 million in cash distributions related to its investment in ETP during the six months ended June 30, 2015.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References + Details

INVESTMENTS IN UNCONSOLIDATED AFFILIATES INVESTMENTS IN UNCONSOLIDATED AFFILATES (Notes)	6 Months Ended
	Jun. 30, 2016
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]
Equity Method Investments and Joint Ventures Disclosure [Text Block]	INVESTMENTS IN UNCONSOLIDATED AFFILIATES The Company’s investment in ETP consisted of 17.8 million ETP common units and was accounted for using the equity method. Effective September 1, 2015, the Company exchanged these ETP common units for a note receivable from a subsidiary of ETP in the amount of $1.37 billion. The note receivable accrues interest annually at 4.75% and is due on September 1, 2035. In connection with this transaction, the Company also recorded a reduction in goodwill of $229 million and net deferred tax liabilities of $825 million, which amounts were associated with the exchanged ETP common units as a result of previous transactions whereby the Company had acquired ETP common units in exchange for other assets. The balance of the note receivable from a subsidiary of ETP was $556 million at June 30, 2016.

INCOME TAXES Income Taxes (Notes)	6 Months Ended
INCOME TAXES Income Taxes (Notes)	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAXES For the six months ended June 30, 2016, the effective rate differed from the federal statutory rate of 35% was primarily due to state income taxes. For the six months ended June 30, 2015, the effective rate differed from the federal statutory rate was primarily due to state income taxes and other federal permanent adjustments.

FAIR VALUE Fair Value (Notes)	6 Months Ended
FAIR VALUE Fair Value (Notes)	Jun. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	FAIR VALUE MEASURES The Company did not have any assets or liabilities measured at fair value on a recurring basis at June 30, 2016 or December 31, 2015. The carrying amount of cash and cash equivalents, accounts receivable and accounts payable approximates fair value due to their short-term maturities. Based on the estimated borrowing rates currently available to the Company and its subsidiaries for loans with similar terms and average maturities, the aggregate fair value of the Company’s consolidated debt obligations at June 30, 2016 and December 31, 2015 was $1.13 billion and $1.20 billion, respectively. The fair value of the Company’s consolidated debt obligations is a Level 2 valuation based on the observable inputs used for similar liabilities. The Company did not have any Level 3 instruments measured at fair value at June 30, 2016 or December 31, 2015, and there were no transfers between hierarchy levels.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Commitments and Contingencies

6 Months Ended

Jun. 30, 2016

Commitments and Contingencies [Abstract]

Commitments and Contingencies Disclosure

REGULATORY MATTERS, COMMITMENTS, CONTINGENCIES AND ENVIRONMENTAL LIABILITIES

Contingent Residual Support Agreement with ETP

The Company provides contingent, residual support to Citrus ETP Finance LLC (on a non-recourse basis to the Company) with respect to Citrus ETP Finance LLC’s obligations to ETP to support the payment of $2 billion in principal amount of senior notes issued by ETP on January 17, 2012.

FERC Audit

In March 2016, the FERC commenced an audit of Trunkline for the period from January 1, 2013 to present to evaluate Trunkline’s compliance with the requirements of its FERC gas tariff, the accounting regulations of the Uniform System of Accounts as prescribed by the FERC, and the FERC’s annual reporting requirements. The audit is ongoing.

Environmental Matters

The Company’s operations are subject to federal, state and local laws, rules and regulations regarding water quality, hazardous and solid waste management, air quality control and other environmental matters. These laws, rules and regulations require the Company to conduct its operations in a specified manner and to obtain and comply with a wide variety of environmental regulations, licenses, permits, inspections and other approvals. Failure to comply with environmental laws, rules and regulations may expose the Company to significant fines, penalties and/or interruptions in operations. The Company’s environmental policies and procedures are designed to achieve compliance with such applicable laws and regulations. These evolving laws and regulations and claims for damages to property, employees, other persons and the environment resulting from current or past operations may result in significant expenditures and liabilities in the future. The Company engages in a process of updating and revising its procedures for the ongoing evaluation of its operations to identify potential environmental exposures and enhance compliance with regulatory requirements.

The Company is responsible for environmental remediation at certain sites on its natural gas transmission systems for contamination resulting from the past use of lubricants containing PCBs in compressed air systems; the past use of paints containing PCBs; and the prior use of wastewater collection facilities and other on-site disposal areas. The Company has implemented a program to remediate such contamination. The primary remaining remediation activity on the Company’s systems is associated with past use of paints containing PCBs or PCB impacts to equipment surfaces and to a building at one location. The PCB assessments are ongoing and the related estimated remediation costs are subject to further change. Other remediation typically involves the management of contaminated soils and may involve remediation of groundwater. Activities vary with site conditions and locations, the extent and nature of the contamination, remedial requirements, complexity and sharing of responsibility. The ultimate liability and total costs associated with these sites will depend upon many factors. If remediation activities involve statutory joint and several liability provisions, strict liability, or cost recovery or contribution actions, the Company could potentially be held responsible for contamination caused by other parties. In some instances, the Company may share liability associated with contamination with other potentially responsible parties. The Company may also benefit from contractual indemnities that cover some or all of the cleanup costs. These sites are generally managed in the normal course of business or operations.

The Company’s environmental remediation activities are undertaken in cooperation with and under the oversight of appropriate regulatory agencies, enabling the Company under certain circumstances to take advantage of various voluntary cleanup programs in order to perform the remediation in the most effective and efficient manner.

The table below reflects the amount of accrued liabilities recorded on the consolidated balance sheets at the dates indicated to cover environmental remediation activities where management believes a loss is probable and reasonably estimable. The Company is not able to estimate the possible loss or range of loss in excess of amounts accrued. The Company does not have any material environmental remediation matters assessed as reasonably possible.



	June 30, 2016		December 31, 2015
			(Restated)
Current	$	—	$	—
Non-current	2		3
Total environmental liabilities	$	2	$	3

Litigation and Other Claims

The Company is involved in legal, tax and regulatory proceedings before various courts, regulatory commissions and governmental agencies regarding matters arising in the ordinary course of business.

Attorney General of the Commonwealth of Massachusetts v. New England Gas Company

On July 7, 2011, the Massachusetts Attorney General (“AG”) filed a regulatory complaint with the Massachusetts Department of Public Utilities (“MDPU”) against New England Gas Company with respect to certain environmental cost recoveries. The AG is seeking a refund to New England Gas Company customers for alleged “excessive and imprudently incurred costs” related to legal fees associated with Southern Union’s environmental response activities. In the complaint, the AG requests that the MDPU initiate an investigation into the New England Gas Company’s collection and reconciliation of recoverable environmental costs including: (i) the prudence of any and all legal fees, totaling $19 million, that were charged by the Kasowitz, Benson, Torres & Friedman firm and passed through the recovery mechanism since 2005, the year when a partner in the firm, the Southern Union former Vice Chairman, President and Chief Operating Officer, joined Southern Union’s management team; (ii) the prudence of any and all legal fees that were charged by the Bishop, London & Dodds firm and passed through the recovery mechanism since 2005, the period during which a member of the firm served as Southern Union’s Chief Ethics Officer; and (iii) the propriety and allocation of certain legal fees charged that were passed through the recovery mechanism that the AG contends only qualify for a lesser, 50%, level of recovery. Southern Union has filed its answer denying the allegations and moved to dismiss the complaint, in part on a theory of collateral estoppel. The hearing officer has deferred consideration of Southern Union’s motion to dismiss. The AG’s motion to be reimbursed expert and consultant costs by Southern Union of up to $150,000 was granted. By tariff, these costs are recoverable through rates charged to New England Gas Company customers. The hearing officer previously stayed discovery pending resolution of a dispute concerning the applicability of attorney-client privilege to legal billing invoices. The MDPU issued an interlocutory order on June 24, 2013 that lifted the stay, and discovery has resumed. The Company (as successor to Southern Union) believes it has complied with all applicable requirements regarding its filings for cost recovery and has not recorded any accrued liability; however, the Company will continue to assess its potential exposure for such cost recoveries as the matter progresses.

Liabilities for Litigation and Other Claims

The Company records accrued liabilities for litigation and other claim costs when management believes a loss is probable and reasonably estimable. When management believes there is at least a reasonable possibility that a material loss or an additional material loss may have been incurred, the Company discloses (i) an estimate of the possible loss or range of loss in excess of the amount accrued; or (ii) a statement that such an estimate cannot be made. As of June 30, 2016 and December 31, 2015, the Company has litigation and other claim-related accrued liabilities of $21 million and $22 million, respectively. The Company does not have any material litigation or other claim contingency matters assessed as probable or reasonably possible that would require disclosure in the financial statements.

Other Commitments and Contingencies

The Company is subject to the laws and regulations of states and other jurisdictions concerning the identification, reporting and escheatment (the transfer of property to the state) of unclaimed or abandoned funds, and is subject to audit and examination for compliance with these requirements. The Company is currently being examined by a third party auditor on behalf of nine states for compliance with unclaimed property laws.

OPERATIONS AND ORGANIZATION Restatement (Tables)

6 Months Ended

Jun. 30, 2016

Accounting Changes and Error Corrections [Abstract]

Restatement to Prior Year Income [Table Text Block]



	Three Months Ended June 30, 2015					Six Months Ended June 30, 2015
	Previously Reported			As Restated		Previously Reported		As Restated
Income tax expense	$	25		$	—	$	37	$	12
Net Income (Loss)	(6		)	19		25		50
Comprehensive income (loss)	(6		)	19		25		51

Error Corrections and Prior Period Adjustments Restatement [Line Items]

Restatement to Cash Flow [Table Text Block]



	Six Months Ended June 30, 2015
	Previously Reported		As Restated
Net income	$	25	$	50
Deferred income taxes	17		(8		)

Related Party Transactions (Tables)

6 Months Ended

Jun. 30, 2016

The following table provides a summary of the related party activity included in our consolidated statements of operations:



	Three Months Ended June 30,					Six Months Ended June 30,
	2016		2015			2016		2015
			(Restated)					(Restated)
Operating revenues	$	4	$	4		$	9	$	9
Operating and maintenance	3		4			7		8
General and administrative	7		8			14		16
Interest income — affiliates	7		1			14		1
Income from unconsolidated affiliates	—		(6		)	—		(2		)

Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2016

Commitments and Contingencies [Abstract]

Environmental Liabilities Table



	June 30, 2016		December 31, 2015
			(Restated)
Current	$	—	$	—
Non-current	2		3
Total environmental liabilities	$	2	$	3

Operations and Organizaton (Details) - Panhandle [Member]	6 Months Ended
	Jun. 30, 2016
General partnership
Description of the Business
General partnership interest	1.00%
Limited partner
Description of the Business
Limited partnership interest	99.00%

OPERATIONS AND ORGANIZATION Restatement (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Interest Income, Related Party	$ 7		$ 1	$ 14	$ 1
Increase (Decrease) in Deferred Income Taxes				15	(8)
Income Tax Expense (Benefit)	9		0	21	12
Net income	15		19	46	50
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 15		19	$ 46	51
Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Interest Income, Related Party		$ 9
Income Tax Expense (Benefit)		1				$ 36
Net income					6
InterestRelatedIncomeTax [Member] \| Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income Tax Expense (Benefit)		$ 3
Scenario, Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Increase (Decrease) in Deferred Income Taxes					17
Income Tax Expense (Benefit)			25		37
Net income			(6)		25
Comprehensive Income (Loss), Net of Tax, Attributable to Parent			$ (6)		$ 25

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Related Party Transaction
Operating revenues	$ 4	$ 4	$ 9	$ 9
Operating and maintenance	3	4	7	8
General and administrative	7	8	14	16
Interest income - affiliates	7	1	14	1
Equity in earnings of unconsolidated affiliates	$ 0	$ (6)	$ 0	$ (2)

Related Party (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
Related Party (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015
Related Party Transaction
Proceeds from Equity Method Investment, Dividends or Distributions	$ 0	$ 8
ETP [Member]
Related Party Transaction
Proceeds from Equity Method Investment, Dividends or Distributions		$ 37

INVESTMENTS IN UNCONSOLIDATED AFFILIATES INV IN UNCONSOLIDATED AFFILIATES - Narrative (Details) - USD ($) shares in Millions, $ in Millions	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Schedule of Equity Method Investments [Line Items]
Notes Receivable, Related Parties	$ 556		$ 1,370
Goodwill	$ 923	$ 923
Investment In ETP [Member]
Schedule of Equity Method Investments [Line Items]
Goodwill			229
Deferred Tax Liabilities, Deferred Expense			$ 825
ETP [Member]
Schedule of Equity Method Investments [Line Items]
Number of common units of a subsidiary partnership that are held by a less than wholly-owned subsidiary of the Parent.			17.8
SUG Holding Note Receivable [Member]
Schedule of Equity Method Investments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			4.75%

INCOME TAXES Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
INCOME TAXES Income Taxes (Details) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Tax Expense (Benefit)	$ 9	$ 0	$ 21	$ 12

FAIR VALUE Fair Value Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Debt Instrument, Fair Value Disclosure	$ 1,130	$ 1,200

Commitment and Contingenices (Narrative) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Mar. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Loss Contingencies
Contingent Residual Support Agreement, Amount		$ 2,000,000,000
Estimated litigation liability	$ 21,000,000		$ 22,000,000
Attorney General of Commonwealth [Member]
Loss Contingencies
Legal Fees	$ 19,000,000
Percentage Of Recovery	50.00%
Reimbursement expert and consultant cost, maximum	$ 150,000

Commitments and Contingencies - Accrued Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Loss Contingencies
Current	$ 0	$ 0
Non-current	2	3
Total environmental liabilities	$ 2	$ 3