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Document And Entity Information $ in Thousands	12 Months Ended
Document And Entity Information $ in Thousands	Dec. 31, 2012 USD ($) shares
Document Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Entity Registrant Name	Panhandle Eastern Pipe Line Co LP
Entity Central Index Key	0000076063
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Public Float \| $	$ 0
Entity Common Stock, Shares Outstanding \| shares	0

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Successor
CURRENT ASSETS:
Cash and cash equivalents	$ 0
Accounts receivable net of allowances of nil and $1, respectively	74
Accounts receivable from related companies	14
Natural gas imbalances receivable	10
Note receivable from related party	0
System natural gas and operating supplies	144
Other	20
Total current assets	262
PROPERTY, PLANT AND EQUIPMENT:
Plant in service	4,076
Construction work in progress	45
Total property, plant and equipment	4,121
Accumulated depreciation and amortization	(57)
Net property, plant and equipment	4,064
GOODWILL	1,785
NOTE RECEIVABLE FROM RELATED PARTY	831
OTHER NON-CURRENT ASSETS	108
Total assets	7,050
CURRENT LIABILITIES:
Current portion of long-term debt	258
Accounts payable	12
Accounts payable to related companies	27
Natural gas imbalances — payable	130
Accrued taxes	13
Accrued interest	13
Capital accruals	13
Other	56
Total current liabilities	522
LONG-TERM DEBT, less current portion	1,499
DEFERRED INCOME TAXES	853
OTHER NON-CURRENT LIABILITIES	135
COMMITMENTS AND CONTINGENCIES (Note 15)
PARTNERS’ CAPITAL:
Partners’ capital	4,050
Accumulated other comprehensive loss	(9)
Tax sharing note receivable — related party	0
Total partners’ capital	4,041
Total liabilities and partners’ capital	$ 7,050
Predecessor
CURRENT ASSETS:
Cash and cash equivalents		$ 0
Accounts receivable net of allowances of nil and $1, respectively		76
Accounts receivable from related companies		6
Natural gas imbalances receivable		53
Note receivable from related party		342
System natural gas and operating supplies		115
Other		21
Total current assets		613
PROPERTY, PLANT AND EQUIPMENT:
Plant in service		4,046
Construction work in progress		42
Total property, plant and equipment		4,088
Accumulated depreciation and amortization		(733)
Net property, plant and equipment		3,355
GOODWILL		0
NOTE RECEIVABLE FROM RELATED PARTY		688
OTHER NON-CURRENT ASSETS		19
Total assets		4,675
CURRENT LIABILITIES:
Current portion of long-term debt		342
Accounts payable		13
Accounts payable to related companies		52
Natural gas imbalances — payable		145
Accrued taxes		18
Accrued interest		14
Capital accruals		11
Other		56
Total current liabilities		651
LONG-TERM DEBT, less current portion		1,624
DEFERRED INCOME TAXES		538
OTHER NON-CURRENT LIABILITIES		70
COMMITMENTS AND CONTINGENCIES (Note 15)
PARTNERS’ CAPITAL:
Partners’ capital		1,809
Accumulated other comprehensive loss		(16)
Tax sharing note receivable — related party		(1)
Total partners’ capital		1,792
Total liabilities and partners’ capital		$ 4,675

PARENTHETICAL DISCLOSURE OF CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Successor
Allowance for doubtful accounts	$ 0
Predecessor
Allowance for doubtful accounts		$ 1	$ 1	$ 1

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Successor
OPERATING REVENUES:
Transportation and storage of natural gas		$ 417
LNG terminalling		166
Other		9
Total operating revenues		592
OPERATING EXPENSES:
Operating, maintenance and general		173
Operating, maintenance and general - affiliate		61
Depreciation and amortization		125
Taxes, other than on income		28
Total operating expenses		387
OPERATING INCOME		205
OTHER INCOME (EXPENSE):
Interest expense		(43)
Interest income - affiliates		2
Total other expenses, net		(41)
INCOME BEFORE INCOME TAX EXPENSE		164
Income tax expense		76
NET INCOME		$ 88
Predecessor
OPERATING REVENUES:
Transportation and storage of natural gas	$ 140		$ 574	$ 561
LNG terminalling	51		220	199
Other	3		10	9
Total operating revenues	194		804	769
OPERATING EXPENSES:
Operating, maintenance and general	53		221	216
Operating, maintenance and general - affiliate	14		58	55
Depreciation and amortization	30		128	123
Taxes, other than on income	9		35	36
Total operating expenses	106		442	430
OPERATING INCOME	88		362	339
OTHER INCOME (EXPENSE):
Interest expense	(25)		(108)	(103)
Interest income - affiliates	2		9	9
Total other expenses, net	(23)		(99)	(94)
INCOME BEFORE INCOME TAX EXPENSE	65		263	245
Income tax expense	25		95	97
NET INCOME	$ 40		$ 168	$ 148

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Successor
Statement of Income and Comprehensive Income [Line Items]
Net income		$ 88
Other comprehensive income (loss), net of tax:
Reclassification of unrealized loss on interest rate hedges into earnings		0
Change in fair value of interest rate hedges		0
Actuarial loss relating to postretirement benefits		(9)
Reclassification of prior service credit relating to other postretirement benefits into earnings		0
Total other comprehensive income, net of tax		(9)
Comprehensive income		$ 79
Predecessor
Statement of Income and Comprehensive Income [Line Items]
Net income	$ 40		$ 168	$ 148
Other comprehensive income (loss), net of tax:
Reclassification of unrealized loss on interest rate hedges into earnings	3		13	13
Change in fair value of interest rate hedges	0		(1)	(8)
Actuarial loss relating to postretirement benefits	0		(10)	(1)
Reclassification of prior service credit relating to other postretirement benefits into earnings	0		(1)	(1)
Total other comprehensive income, net of tax	3		1	3
Comprehensive income	$ 43		$ 169	$ 151

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of net income to net cash provided by operating activities:
Net gain on curtailment of OPEB benefits		$ (11)
Successor
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income		88
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization		125
Deferred income taxes		86
Amortization of costs charged to interest		(24)
Net gain on curtailment of OPEB benefits		(11)
Changes in operating assets and liabilities, net of Merger impact		(77)
Net cash flows provided by operating activities		187
CASH FLOWS FROM INVESTING ACTIVITIES:
Net (increase) decrease in note receivable - related parties		(55)
Net (decrease) increase in income taxes payable - related parties		(43)
Additions to property, plant and equipment		(90)
Plant retirements and other		0
Net cash flows (used in) provided by investing activities		(188)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of long-term debt		0
Repayment of debt		0
Issuance costs of debt		0
Other		1
Net cash flows provided by (used in) financing activities		1
INCREASE IN CASH AND CASH EQUIVALENTS		0
CASH AND CASH EQUIVALENTS, beginning of period		0
CASH AND CASH EQUIVALENTS, end of period	$ 0	0
Predecessor
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	40		$ 168	$ 148
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	30		128	123
Deferred income taxes	19		76	52
Amortization of costs charged to interest	0		0	0
Net gain on curtailment of OPEB benefits	0		0	0
Changes in operating assets and liabilities, net of Merger impact	23		(28)	(21)
Net cash flows provided by operating activities	112		344	302
CASH FLOWS FROM INVESTING ACTIVITIES:
Net (increase) decrease in note receivable - related parties	255		(207)	(128)
Net (decrease) increase in income taxes payable - related parties	5		(10)	21
Additions to property, plant and equipment	(28)		(111)	(161)
Plant retirements and other	0		0	7
Net cash flows (used in) provided by investing activities	232		(328)	(261)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of long-term debt	455		0	0
Repayment of debt	(797)		(18)	(41)
Issuance costs of debt	(2)		0	0
Other	0		2	0
Net cash flows provided by (used in) financing activities	(344)		(16)	(41)
INCREASE IN CASH AND CASH EQUIVALENTS	0		0	0
CASH AND CASH EQUIVALENTS, beginning of period	0	$ 0	0	0
CASH AND CASH EQUIVALENTS, end of period	$ 0		$ 0	$ 0

CONSOLIDATED STATEMENT OF PARTNERS' CAPITAL - USD ($) $ in Millions	Total	Partners’ Capital	Accumulated Other Comprehensive Loss	Tax Sharing Note Receivable-Related Party
Balance (Predecessor) at Dec. 31, 2009	$ 1,468	$ 1,493	$ (20)	$ (5)
Tax sharing receivable - Southern Union \| Predecessor	2	0	0	2
Net income \| Predecessor	148	148	0	0
Other comprehensive income, net of tax \| Predecessor	3	0	3	0
Balance (Predecessor) at Dec. 31, 2010	1,621	1,641	(17)	(3)
Tax sharing receivable - Southern Union \| Predecessor	2	0	0	2
Net income \| Predecessor	168	168	0	0
Other comprehensive income, net of tax \| Predecessor	1	0	1	0
Balance (Predecessor) at Dec. 31, 2011	1,792	1,809	(16)	(1)
Tax sharing receivable - Southern Union \| Predecessor	0	0	0	0
Net income \| Predecessor	40	40	0	0
Other comprehensive income, net of tax \| Predecessor	3	0	3	0
Balance (Predecessor) at Mar. 25, 2012	1,835	1,849	(13)	(1)
Balance (Successor) at Mar. 25, 2012	3,961	3,962	0	(1)
Tax sharing receivable - Southern Union \| Successor	1	0	0	1
Net income \| Successor	88	88	0	0
Other comprehensive income, net of tax \| Successor	(9)	0	(9)	0
Balance (Successor) at Dec. 31, 2012	$ 4,041	$ 4,050	$ (9)	$ 0

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.18)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.22)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e565-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 10, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A7
-Appendix A

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 87-21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 19
-Article 5

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28, 29, 30
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

+ Details

- Definition

The amount of ownership interest of different classes of partners in limited partnership.

+ References + Details

Description of the Business

12 Months Ended

Dec. 31, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of the Business

OPERATIONS AND ORGANIZATION:

Panhandle is primarily engaged in the interstate transportation and storage of natural gas and also provides LNG terminalling and regasification services and is subject to the rules and regulations of the FERC. The Company’s entities include the following:


•	PEPL, an indirect wholly-owned subsidiary of Southern Union, which is an indirect wholly-owned subsidiary of ETE;


•	Trunkline, a direct wholly-owned subsidiary of PEPL;


•	Sea Robin, an indirect wholly-owned subsidiary of PEPL;


•	LNG Holdings, an indirect wholly-owned subsidiary of PEPL;


•	Trunkline LNG, a direct wholly-owned subsidiary of LNG Holdings; and


•	Southwest Gas, a direct wholly-owned subsidiary of PEPL.

The Company’s assets consist of interstate pipelines that transport natural gas from the Gulf of Mexico, South Texas and the panhandle regions of Texas and Oklahoma to major U.S. markets in the Midwest and Great Lakes region, as well as, owned underground storage capacity. The Company also owns and operates an LNG import terminal located on Louisiana’s Gulf Coast, as well as, an above ground LNG storage facility.

Southern Union Panhandle, LLC, an indirect wholly-owned subsidiary of Southern Union, serves as the general partner of PEPL and owns a 1% general partnership interest in PEPL. PEPL Holdings, LLC, an indirect wholly-owned subsidiary of Southern Union, owns a 99% limited partnership interest in PEPL.

See Note 3 for information related to Southern Union’s merger with ETE and the completion of the Holdco Transaction.

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

ESTIMATES, SIGNIFICANT ACCOUNTING POLICIES AND BALANCE SHEET DETAIL:

Basis of Presentation. The Company’s consolidated financial statements have been prepared in accordance with GAAP.

The Company is subject to regulation by certain state and federal authorities. The Company has accounting policies under GAAP that do not conform to authoritative guidance which are in accordance with the accounting requirements and ratemaking practices of the regulatory authorities. In 1999, the Company discontinued application of regulatory-based accounting policies for its units which had been applying such accounting policies, primarily due to the level of discounting from tariff rates and its inability to recover specific costs. The accounting required by the regulatory-based authoritative guidance differs from the accounting required for businesses that do not apply its provisions. Transactions that are generally recorded differently as a result of applying regulatory accounting requirements include, among others, recording of regulatory assets, the capitalization of an equity component of invested funds on regulated capital projects and depreciation differences. The Company periodically reviews its level of discounting and negotiated rate contracts, the length of rate moratoriums and other related factors to determine if the regulatory-based authoritative guidance should be applied.

Principles of Consolidation. The consolidated financial statements include the accounts of all majority-owned subsidiaries, after eliminating significant intercompany transactions and balances. Investments in which the Company has significant influence over the operations of the investee are accounted for using the equity method.

Business Combination Accounting. Southern Union’s March 26, 2012 merger transaction with ETE was accounted for by ETE using business combination accounting. Under this method, the purchase price paid by the acquirer is allocated to the assets acquired and liabilities assumed as of the acquisition date based on their fair value. By the application of “push-down” accounting, PEPL’s assets, liabilities and partners’ capital were accordingly adjusted to fair value on March 26, 2012. Determining the fair value of certain assets and liabilities assumed is judgmental in nature and often involves the use of significant estimates and assumptions. See Note 3 for a discussion of the estimated fair values of assets and liabilities recorded in connection with the ETE Merger.

Due to the application of “push-down” accounting, the Company’s financial statements and certain footnote disclosures are presented in two distinct periods to indicate the application of two different bases of accounting. Periods prior to March 26, 2012 are identified herein as “Predecessor,” while periods subsequent to the ETE Merger are identified as “Successor.”

Use of Estimates. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents. Cash equivalents consist of highly liquid investments, which are readily convertible into cash and have original maturities of three months or less. Total cash balances at December 31, 2012, 2011 and 2010 were each less than 1 million, respectively.

Non-cash investing and financing activities and supplemental cash flow information are as follows:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Supplemental Cash Flow Information:
Cash paid for interest, net of interest capitalized	$	75	$	17	$	106	$	102
Cash paid for income taxes	32		—		35		22

Inventories. System natural gas and operating supplies consist of natural gas held for operations and materials and supplies, both of which are carried at the lower of weighted average cost or market, while natural gas owed back to customers is valued at market. The natural gas held for operations that the Company does not expect to consume in its operations in the next twelve months is reflected in non-current assets.

The following table presents the components of inventory at the dates indicated:



	Successor		Predecessor
	December 31, 2012		December 31, 2011
Current
Natural gas ⁽¹⁾	$	124	$	96
Materials and supplies	20		19
Total current	144		115
Non-Current
Natural gas ⁽¹⁾	—		3
	$	144	$	118


⁽¹⁾	Natural gas volumes held for operations at December 31, 2012 and 2011 were 34,891,000 MMBtu and 29,718,000 MMBtu, respectively.

Natural Gas Imbalances. Natural gas imbalances occur as a result of differences in volumes of natural gas received and delivered. The Company records natural gas imbalance in-kind receivables and payables at cost or market, based on whether net imbalances have reduced or increased system natural gas balances, respectively. Net imbalances that have reduced system natural gas are valued at the cost basis of the system natural gas, while net imbalances that have increased system natural gas and are owed back to customers are priced, along with the corresponding system natural gas, at market.

Fuel Tracker. The fuel tracker is the cumulative balance of compressor fuel volumes owed to the Company by its customers or owed by the Company to its customers. The customers, pursuant to each pipeline’s tariff and related contracts, provide all compressor fuel to the pipeline based on specified percentages of the customer’s natural gas volumes delivered into the pipeline. The percentages are designed to match the actual natural gas consumed in moving the natural gas through the pipeline facilities, with any difference between the volumes provided versus volumes consumed reflected in the fuel tracker. The tariff of Trunkline Gas, in conjunction with the customers’ contractual obligations, allows the Company to record an asset and direct bill customers for any fuel ultimately under-recovered. The other FERC-regulated Panhandle entities record an expense when fuel is under-recovered or record a credit to expense to the extent any under-recovered prior period balances are subsequently recouped as they do not have such explicit billing rights specified in their tariffs. Liability accounts are maintained for net volumes of compressor fuel natural gas owed to customers collectively. The pipelines’ fuel reimbursement is in-kind and non-discountable.

Property, Plant and Equipment.

Additions. Ongoing additions of property, plant and equipment are stated at cost. The Company capitalizes all construction-related direct labor and material costs, as well as indirect construction costs. Such indirect construction costs primarily include capitalized interest costs (more fully described below in the Interest Cost Capitalized accounting policies disclosure) and labor and related costs of departments associated with supporting construction activities. The indirect capitalized labor and related costs are largely based upon results of periodic time studies or management reviews of time allocations, which provide an estimate of time spent supporting construction projects. The cost of replacements and betterments that extend the useful life of property, plant and equipment is also capitalized. The cost of repairs and replacements of minor property, plant and equipment items is charged to expense as incurred.

Retirements. When ordinary retirements of property, plant and equipment occur, the original cost less salvage value is removed by a charge to accumulated depreciation and amortization, with no gain or loss recorded. When entire regulated operating units of property, plant and equipment are retired or sold, the original cost less salvage value and related accumulated depreciation and amortization accounts are removed, with any resulting gain or loss recorded in earnings.

Depreciation. The Company computes depreciation expense using the straight-line method.

Interest Cost Capitalized. The Company capitalizes interest on certain qualifying assets that are undergoing activities to prepare them for their intended use. Interest costs incurred during the construction period are capitalized and amortized over the life of the assets.

For additional information, see Note 13.

Asset Impairment. An impairment loss is recognized when the carrying amount of a long-lived asset used in operations is not recoverable and exceeds its fair value. The carrying amount of a long-lived asset is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset. A long-lived asset is tested for recoverability whenever events or changes in circumstances indicate that its carrying amount may not be recoverable.

Goodwill. Goodwill resulting from a purchase business combination is not amortized, but instead is tested for impairment at the Company’s reporting unit level at least annually as of November 30 by applying a fair-value based test. The annual impairment test is updated if events or circumstances occur that would more likely than not reduce the fair value of the reporting unit below its book carrying value. No goodwill impairments were recorded for the periods presented in these consolidated financial statements.

Related Party Transactions. Related party expenses primarily include payments for services provided by Southern Union. Other income is primarily related to interest income on a note receivable from a related party. See Note 5 for additional information on related party transactions.

A portion of the Company’s revenues for the transportation of natural gas includes revenues from MGE, a division of Southern Union that is a natural gas utility having a service territory covering Kansas City, Missouri and parts of western Missouri.

PEPL and certain of its subsidiaries are not treated as separate taxpayers for federal and certain state income tax purposes. Instead, the Company’s income is taxable to Southern Union. The Company has entered into a tax sharing agreement with Southern Union pursuant to which the Company will be required to make payments to Southern Union in order to reimburse Southern Union for federal and state taxes that it pays on the Company’s income, or to receive payments from Southern Union to the extent that tax losses generated by the Company are utilized by Southern Union. In addition, the Company’s subsidiaries that are corporations are included in consolidated and combined federal and state income tax returns filed by Southern Union. The Company’s liability generally is equal to the liability that the Company and its subsidiaries would have incurred based upon the Company’s taxable income if the Company was a taxpayer filing separately from Southern Union, except that the Company will receive credit under an intercompany note for any increased liability resulting from its tax basis in its assets having been reduced as a result of the like-kind exchange under Section 1031 of the Internal Revenue Code of 1986, as amended. The tax sharing agreement may be amended from time to time.

Environmental Expenditures. Environmental expenditures that relate to an existing condition caused by past operations that do not contribute to current or future revenue generation are expensed. Environmental expenditures relating to current or future revenues are expensed or capitalized as appropriate. Liabilities are recorded when environmental assessments and/or clean-ups are probable and the costs can be reasonably estimated. Remediation obligations are not discounted because the timing of future cash flow streams is not predictable.

Revenues. The Company’s revenues from transportation and storage of natural gas and LNG terminalling are based on capacity reservation charges and, to a lesser extent, commodity usage charges. Reservation revenues are based on contracted rates and capacity reserved by the customers and are recognized monthly. Revenues from commodity usage charges are also recognized monthly, based on the volumes received from or delivered for the customer, based on the tariff of that particular Panhandle entity, with any differences in volumes received and delivered resulting in an imbalance. Volume imbalances generally are settled in-kind with no impact on revenues, with the exception of Trunkline, which settles certain imbalances in cash pursuant to its tariff, and records gains and losses on such cashout sales as a component of revenue, to the extent not owed back to customers.

Accounts Receivable and Allowance for Doubtful Accounts. The Company manages trade credit risks to minimize exposure to uncollectible trade receivables. Prospective and existing customers are reviewed for creditworthiness based upon pre-established standards. Customers that do not meet minimum standards are required to provide additional credit support. The Company utilizes the allowance method for recording its allowance for uncollectible accounts, which is primarily based on the application of historical bad debt percentages applied against its aged accounts receivable. Increases in the allowance are recorded as a component of operating expenses; reductions in the allowance are recorded when receivables are subsequently collected or written-off. Past due receivable balances are written-off when the Company’s efforts have been unsuccessful in collecting the amount due.

The following table presents the balance in the allowance for doubtful accounts and activity for the periods presented.



	Years Ended December 31,
	2011		2010
Beginning balance	$	1	$	1
Additions: charged to cost and expenses	—		—
Deductions: write-off of uncollectible accounts	—		—
Other	—		—
Ending balance	$	1	$	1

Amounts related to the allowance for doubtful accounts were not material as of and during the year ended December 31, 2012.

The following table presents the relative contribution to the Company’s total operating revenue of each customer that comprised at least 10% of its operating revenues for the periods presented:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
BG LNG Services	31	%	30	%	30	%	29	%
ProLiance	12		13		13		13
Other top 10 customers	20		24		21		23
Remaining customers	37		33		36		35
Total percentage	100	%	100	%	100	%	100	%

Retirement Benefits. Employers are required to recognize in their balance sheets the overfunded or underfunded status of defined benefit other postretirement plans, measured as the difference between the fair value of the plan assets and the benefit obligation. Each overfunded plan is recognized as an asset and each underfunded plan is recognized as a liability. Employers must recognize the change in the funded status of the plan in the year in which the change occurs through Accumulated other comprehensive income in Partners’ capital. See Note 9 for additional related information.

Derivatives and Hedging Activities. All derivatives are recognized on the consolidated balance sheet at their fair value. On the date the derivative contract is entered into, the Company designates the derivative as (i) a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment (a fair value hedge); (ii) a hedge of a forecasted transaction or the variability of cash flows to be received or paid in conjunction with a recognized asset or liability (a cash flow hedge); or (iii) an instrument that is held for trading or non-hedging purposes (a trading or economic hedging instrument). For derivatives treated as a fair value hedge, the effective portion of changes in fair value is recorded as an adjustment to the hedged item. The ineffective portion of a fair value hedge is recognized in earnings. Upon termination of a fair value hedge of a debt instrument, the resulting gain or loss is amortized to earnings through the maturity date of the debt instrument. For derivatives treated as a cash flow hedge, the effective portion of changes in fair value is recorded in Accumulated other comprehensive income until the related hedged items impact earnings. Any ineffective portion of a cash flow hedge is reported in current-period earnings. For derivatives treated as trading or economic hedging instruments, changes in fair value are reported in current-period earnings. Fair value is determined based upon quoted market prices and pricing models using assumptions that market participants would use. See Note 11 for information related to derivative instruments and hedging activities.

Stock-Based Compensation. The Company measures all employee stock-based compensation using a fair value method and records the related expense in the consolidated statement of operations. For more information, see Note 14.

Fair Value Measurement. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company utilizes market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about nonperformance risk, which is primarily comprised of credit risk (both the Company’s own credit risk and counterparty credit risk) and the risks inherent in the inputs to any applicable valuation techniques. The Company places more weight on current market information concerning credit risk (e.g. current credit default swap rates) as opposed to historical information (e.g. historical default probabilities and credit ratings). These inputs can be readily observable, market corroborated, or generally unobservable. The Company endeavors to utilize the best available information, including valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. A three-tier fair value hierarchy, which prioritizes the inputs used to measure fair value, is as follows:


•	Level 1 – Observable inputs such as quoted prices in active markets for identical assets or liabilities;

•

Level 2 – Observable inputs such as: (i) quoted prices for similar assets or liabilities in active markets; (ii) quoted prices for identical or similar assets or liabilities in markets that are not active and do not require significant adjustment based on unobservable inputs; or (iii) valuations based on pricing models, discounted cash flow methodologies or similar techniques where significant inputs (e.g., interest rates, yield curves, etc.) are derived principally from observable market data, or can be corroborated by observable market data, for substantially the full term of the assets or liabilities; and

•

Level 3 – Unobservable inputs, including valuations based on pricing models, discounted cash flow methodologies or similar techniques where at least one significant model assumption or input is unobservable. Unobservable inputs are used to the extent that observable inputs are not available and reflect the Company’s own assumptions about the assumptions market participants would use in pricing the assets or liabilities. Unobservable inputs are based on the best information available in the circumstances, which might include the Company’s own data.

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

See Note 12 and Note 9 for additional information regarding the assets and liabilities of the Company measured on a recurring and nonrecurring basis, respectively.

Asset Retirement Obligations. Legal obligations associated with the retirement of long-lived assets are recorded at fair value at the time the obligations are incurred, if a reasonable estimate of fair value can be made. Present value techniques are used which reflect assumptions such as removal and remediation costs, inflation, and profit margins that third parties would demand to settle the amount of the future obligation. The Company did not include a market risk premium for unforeseeable circumstances in its fair value estimates because such a premium could not be reliably estimated. Upon initial recognition of the liability, costs are capitalized as a part of the long-lived asset and allocated to expense over the useful life of the related asset. The liability is accreted to its present value each period with accretion being recorded to operating expense with a corresponding increase in the carrying amount of the liability. To the extent the Company is permitted to collect and has reflected in its financials amounts previously collected from customers and expensed, such amounts serve to reduce what would be reflected as capitalized costs at the initial establishment of an ARO.

See Note 6 for additional related information.

Income Taxes. Income taxes are accounted for under the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rate is recognized in earnings in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred tax assets to the amounts more likely than not to be realized.

The determination of the provision for income taxes requires significant judgment, use of estimates, and the interpretation and application of complex tax laws. Significant judgment is required in assessing the timing and amounts of deductible and taxable items and the probability of sustaining uncertain tax positions. The benefits of uncertain tax positions are recorded in our financial statements only after determining a more-likely-than-not probability that the uncertain tax positions will withstand challenge, if any, from taxing authorities. When facts and circumstances change, we reassess these probabilities and record any changes through the provision for income taxes.

As a limited partnership, the Company is treated as a disregarded entity for federal income tax purposes. Accordingly, the Company and its subsidiaries are not treated as separate taxpayers; instead, their income is directly taxable to Southern Union. Upon completion of the Holdco transaction on October 5, 2012, Southern Union became a member of a new federal consolidated tax return filing group of which Holdco is the parent company. As a result of the Holdco transaction, Southern Union will enter into a tax sharing agreement with Holdco. However, the Company will continue its tax sharing agreement with Southern Union, and will pay its share of taxes based on its taxable income, which will generally equal the liability that the Company would have incurred as a separate taxpayer.

ETE Merger and Holdco Transaction

12 Months Ended

Dec. 31, 2012

Business Combinations [Abstract]

ETE Merger and ETP Merger

ETE MERGER AND HOLDCO TRANSACTION:

Description of Merger

On March 26, 2012, Southern Union, ETE, and Sigma Acquisition Corporation, a wholly-owned subsidiary of ETE (Merger Sub), completed their previously announced merger transaction. Pursuant to the Second Amended and Restated Agreement and Plan of Merger, dated as of July 19, 2011, as amended by Amendment No. 1 thereto dated as of September 14, 2011 (as amended, the Merger Agreement), among Southern Union, ETE and Merger Sub, Merger Sub was merged with and into Southern Union, with Southern Union continuing as the surviving corporation as an indirect, wholly-owned subsidiary of ETE (the Merger).

In connection with, and immediately prior to the Effective Time of the Merger, CrossCountry Energy, LLC, an indirect wholly-owned subsidiary of Southern Union (CrossCountry Energy), ETP, Citrus ETP Acquisition, L.L.C. (ETP Merger Sub), Citrus ETP Finance LLC, ETE, PEPL Holdings, LLC, a newly created indirect wholly-owned subsidiary of Southern Union (PEPL Holdings), and Southern Union consummated the transactions contemplated by that certain Amended and Restated Agreement and Plan of Merger, dated as of July 19, 2011, as amended by Amendment No. 1 thereto dated as of September 14, 2011 and Amendment No. 2 thereto dated as of March 23, 2012 (as amended, the Citrus Merger Agreement) by and among ETP, ETP Merger Sub and Citrus ETP Finance LLC, on the one hand, and ETE, CrossCountry Energy, PEPL Holdings and Southern Union, on the other hand.

Immediately prior to the Effective Time, Southern Union, CrossCountry Energy and PEPL Holdings became parties to the Citrus Merger Agreement by joinder to, and Southern Union assumed the obligations and rights of ETE thereunder. Southern Union made certain customary representations, warranties, covenants and indemnities in the Citrus Merger Agreement. Pursuant to the Citrus Merger Agreement, ETP Merger Sub was merged with and into CrossCountry Energy (the Citrus Merger), with CrossCountry Energy continuing as the surviving entity in the Citrus Merger as a wholly-owned subsidiary of ETP and, as a result thereof, ETP, through its subsidiaries, indirectly owns 50% of the outstanding capital stock of Citrus Corp. (Citrus). As consideration for the Citrus Merger, Southern Union received from ETP $2.0 billion, consisting of approximately $1.9 billion in cash and $105 million of common units representing limited partner interests in ETP.

Immediately prior to the Effective Time, $1.45 billion of the total cash consideration received in respect of the Citrus Merger was contributed to Merger Sub in exchange for an equity interest in Merger Sub. In connection with the Merger, at the Effective Time, such equity interest in Merger Sub held by CCE Holdings, LLC (CCE Holdings) was cancelled and retired.

Pursuant to the Citrus Merger Agreement, immediately prior to the Effective Time, (i) Southern Union contributed its ownership interests in Panhandle Eastern Pipe Line Company, LP and Southern Union Panhandle, LLC (collectively, the Panhandle Interests) to PEPL Holdings (the Panhandle Contribution); and (ii) following the Panhandle Contribution, Southern Union entered into a contingent residual support agreement (the Support Agreement) with ETP and Citrus ETP Finance LLC, pursuant to which Southern Union agreed to provide contingent, residual support to Citrus ETP Finance LLC (on a non-recourse basis to Southern Union) with respect to Citrus ETP Finance LLC’s obligations to ETP to support the payment of $2.0 billion in principal amount of senior notes issued by ETP on January 17, 2012.

Expenses Related to the Merger

Merger-related expenses of $48 million include charges related to employment agreements with certain executives that provide for compensation when their employment was terminated and severance costs associated with administrative headcount reductions, as well as an allocation of such charges for Southern Union employees. These expenses were included in operating, maintenance, and general expenses in the consolidated statements of operations.

The Company also recognized an $11 million net gain due to the curtailment of certain other postretirement employee benefit plans. See Note 9 for more information on the curtailment.

Allocation of Consideration Transferred

The Merger was accounted for using business combination accounting under applicable accounting principles. Business combination accounting requires, among other things, that assets acquired and liabilities assumed be recognized on the balance sheet at their fair values as of the acquisition date. The table below represents the amounts allocated to Panhandle’s tangible and intangible assets and liabilities as of March 26, 2012 based upon management’s estimate of their respective fair values. Certain amounts included in the purchase price allocation, as of December 31, 2012, may have been changed from amounts previously reflected based on management’s review of the valuation. The goodwill resulting from the Merger was primarily due to expected commercial and operational synergies and is not deductible for tax purposes.



Cash and cash equivalents	$	—
Other current assets	229
Property and equipment	4,093
Goodwill	1,785
Identified intangibles ⁽¹⁾	55
Other non-current assets	783
Long-term debt, including current portion	(1,780		)
Deferred income taxes	(773		)
Other liabilities	(431		)
Total fair value of partners’ capital	$	3,961


⁽¹⁾	Identified intangibles will be amortized over a life of approximately 17.5 years and are included in Other non-current assets in the consolidated balance sheets.

Holdco Transaction

On October 5, 2012, ETE and ETP completed the Holdco Transaction, immediately following the closing of ETP’s acquisition of Sunoco whereby, (i) ETE contributed its interest in Southern Union into an ETP-controlled entity in exchange for a 60% equity interest in the new entity, Holdco, and (ii) ETP contributed its interest in Sunoco to Holdco and retained a 40% equity interest in Holdco. Pursuant to a stockholders agreement between ETE and ETP, ETP will control Holdco. This transaction did not result in a new basis of accounting for Southern Union or Panhandle.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 88-16
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph F4
-Subparagraph e
-Appendix F

Reference 18: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51, 52
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 67-73
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Regulatory Matters	12 Months Ended
Regulatory Matters	Dec. 31, 2012
Regulatory Matters, Commitments, Contingencies And Environmental Liabilities [Abstract]
Regulatory Matters	REGULATORY MATTERS: In October 2011, Trunkline and Sea Robin jointly filed with FERC to transfer all of Trunkline’s offshore facilities, and certain related onshore facilities, by sale and transfer to Sea Robin to consolidate and streamline the ownership and operation of all regulated offshore assets under one entity and better position the offshore assets competitively. Several parties filed interventions and protests of this filing. On June 21, 2012, FERC issued an order granting Trunkline permission and approval to proceed with the transfer, subject to compliance with certain regulatory requirements. On July 31, 2012 Sea Robin and Trunkline made the necessary compliance filings with FERC. The transfer of the offshore facilities to Sea Robin was effective September 1, 2012. On July 26, 2012, Trunkline filed an application with the FERC for approval to transfer approximately 770 miles of underutilized loop piping facilities by sale to an affiliate, and such facilities are contemplated to be converted to crude oil transportation service. This sale is subject to FERC approval. Several parties have intervened, commented, or protested this filing and the Company is currently responding to the Commission’s requests for additional information on this application. In November 2011, FERC commenced an audit of PEPL to evaluate its compliance with the Uniform System of Accounts as prescribed by FERC, annual and quarterly financial reporting to FERC, reservation charge crediting policy and record retention. The audit is related to the period from January 1, 2010 through December 31, 2011 and is pending the issuance of a draft audit report.

Related Party Transactions

12 Months Ended

Dec. 31, 2012

Related Party Transactions

RELATED PARTY TRANSACTIONS:

The following table provides a summary of the related party balances included in the consolidated balance sheets at the dates indicated:



	Successor		Predecessor
	December 31, 2012		December 31, 2011
Notes receivable from related party — Southern Union and subsidiaries:
Current	$	—	$	342
Non-current	831		688
	$	831	$	1,030

Accounts receivable from related companies ⁽¹⁾	$	14	$	6

Accounts payable to related companies:
Southern Union — income taxes ⁽²⁾	$	—	$	33
Southern Union — other ⁽³⁾	26		19
Other ⁽⁴⁾	1		—
	$	27	$	52


(1)	Accounts receivable from related companies reflected above primarily related to services provided for ETE, ETP, Citrus, MGE and other affiliates. The December 31, 2011 balance also included interest income associated with a note receivable from an affiliate, which was repaid on March 26, 2012.


(2)	Accounts payable from related companies reflected above related to income taxes payable to Southern Union per the tax sharing agreement to provide for taxes to be remitted upon the filing of the tax return.


(3)	Accounts payable from related companies reflected above primarily related to payroll funding including merger-related expenses, provided by Southern Union. The December 31, 2011 amount was net of insurance proceeds of $2 million owed by Southern Union to the Company.


(4)	Accounts payable from related companies reflected above primarily related to various administrative and operating costs paid by other affiliate companies on behalf of the Company.

The following tables provide a summary of related party transactions for the periods presented:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Transportation and storage of natural gas ⁽¹⁾	$	7	$	1	$	3	$	3
Operation and maintenance and general-affiliate:
Management and royalty fees	5		5		20		19
Corporate services - Southern Union	47		9		32		31
Other expenses ⁽²⁾	9		—		6		5
Other income, net:
Interest income — Southern Union and subsidiaries	2		2		9		9


⁽¹⁾	Represents transportation and storage revenues with ETC, a subsidiary of ETP (in the successor period) and MGE, a Southern Union division.


⁽²⁾	Represents primarily insurance costs and corporate charges for merger-related employee expenses from ETE offset by expenses attributable to services provided by Panhandle on behalf of other affiliate companies.

Pursuant to a demand note with Southern Union under a cash management program, the Company loans excess cash, net of repayments, to Southern Union. The Company is credited with interest on the note at a one month LIBOR rate. Given the uncertainties regarding the timing of the Company’s cash flows, including financings, capital expenditures and operating cash flows, the Company has reported the note receivable as a non-current asset. The Company has access to the funds via the demand note and expects repayment to ultimately occur to primarily fund capital expenditures or debt retirements.

- 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
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+ Details

ASSET RETIREMENT OBLIGATIONS

12 Months Ended

Dec. 31, 2012

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

ASSET RETIREMENT OBLIGATIONS:

The Company’s recorded asset retirement obligations are primarily related to owned natural gas storage wells and offshore lines and platforms. At the end of the useful life of these underlying assets, the Company is legally or contractually required to abandon in place or remove the asset. An ARO is required to be recorded when a legal obligation to retire an asset exists and such obligation can be reasonably estimated. Although a number of other onshore assets in the Company’s system are subject to agreements or regulations that give rise to an ARO upon the Company’s discontinued use of these assets, AROs were not recorded because these assets have an indeterminate removal or abandonment date given the expected continued use of the assets with proper maintenance or replacement.

Individual component assets have been and will continue to be replaced, but the pipeline system will continue in operation as long as supply and demand for natural gas exists. Based on the widespread use of natural gas in industrial and power generation activities, management expects supply and demand to exist for the foreseeable future. The Company has in place a rigorous repair and maintenance program that keeps the pipeline system in good working order. Therefore, although some of the individual assets may be replaced, the pipeline system itself will remain intact indefinitely.

As of December 31, 2012, the Company had recorded AROs related to (i) retiring natural gas storage wells, (ii) retiring offshore platforms and lines and (iii) removing asbestos. Amounts reflected in long-lived assets related to AROs aggregated approximately $1 million and were reflected as non-current assets on our balance sheet.

As of December 31, 2012, the Company had no legally restricted funds for the purpose of settling AROs.

The following table is a reconciliation of the carrying amount of the ARO liability reflected as liabilities on our balance sheet for the periods presented. Changes in assumptions regarding the timing, amount, and probabilities associated with the expected cash flows, as well as the difference in actual versus estimated costs, will result in a change in the amount of the liability recognized.



	Successor			Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012			Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
				Period from January 1, 2012 to March 25, 2012		2011			2010
Beginning balance	$	41		$	41	$	57		$	58
Incurred	1			—		1			29
Revisions	3			—		—			(11		)
Settled	(5		)	—		(17		)	(20		)
Accretion expense	2			—		—			1
Ending balance	$	42		$	41	$	41		$	57

In 2010, additional AROs of $29 million were established primarily for the Company’s offshore assets. During 2010, the Company largely completed its assessment and repairs of the property damaged by Hurricane Ike in 2008, which resulted in accelerated abandonments of such property, and determined that the estimated third party abandonment costs for all of its offshore property needed to be increased. Also in 2010, the Company recorded an $11 million downward revision to its prior ARO liability estimates, primarily for the costs of abandoning certain other specific offshore properties as a result of favorable weather conditions, changes in equipment used, and some changes in scope of the respective projects, which were primarily related to abandonments required as a result of permanent damage from Hurricane Ike. The ARO liability associated with Hurricane Ike was further reduced by settlements of $20 million. Such revisions and settlements were primarily associated with AROs of $8 million and $34 million recorded in 2009 and 2008, respectively, associated with damage caused by Hurricane Ike. During 2011, the Company recorded settlements of approximately $17 million, primarily associated with the abandonment of certain offshore properties damaged by Hurricane Ike. See Note 15 for additional related information related to 2008 Hurricane Damage.

Comprehensive Income

12 Months Ended

Dec. 31, 2012

Statement of Other Comprehensive Income [Abstract]

Comprehensive Income

COMPREHENSIVE INCOME:

The tables below set forth the tax amounts included in the respective components of other comprehensive income for the periods presented:



	Successor			Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012			Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
				Period from January 1, 2012 to March 25, 2012		2011			2010
Income taxes included in other comprehensive income:
Reclassification of unrealized loss on interest rate hedges into earnings	$	—		$	2	$	9		$	9
Change in fair value of interest rate hedges	—			—		(1		)	(5		)
Actuarial loss relating to postretirement benefits	(6		)	—		(6		)	—
Reclassification of prior service credit relating to other postretirement benefits into earnings	—			—		(1		)	(1		)
	$	(6	)	$	2	$	1		$	3

The table below presents the components in accumulated other comprehensive loss as of the dates indicated:



	Successor			Predecessor
	December 31, 2012			December 31, 2011
Other postretirement plan - net actuarial loss and prior service costs, net	$	(9	)	$	(13	)
Interest rate hedges, net	—			(3		)
Total accumulated other comprehensive loss, net of tax	$	(9	)	$	(16	)

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e689-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669619-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e716-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e640-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e709-108580

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e637-108580

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e681-108580

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 14-26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Debt Obligations

12 Months Ended

Dec. 31, 2012

Debt Disclosure [Abstract]

Debt Obligations

DEBT OBLIGATIONS:

The following table sets forth the debt obligations of the Company at the dates indicated:



	Successor			Predecessor
	December 31, 2012			December 31, 2011
6.05% Senior Notes due 2013	$	250		$	250
6.20% Senior Notes due 2017	300			300
8.125% Senior Notes due 2019	150			150
7.00% Senior Notes due 2029	66			66
7.00% Senior Notes due 2018	400			400
Term Loans due 2012	—			797
Term Loan due 2015	455			—
Net premiums on long-term debt	—			3
Unamortized fair value adjustments	136			—
Total debt outstanding	1,757			1,966
Current portion of long-term debt	(258		)	(342		)
Total long-term debt	$	1,499		$	1,624

The Company has $250 million principal amount of senior notes which mature within the next twelve months. The Company currently expects to refinance all or a portion of the debt upon maturity or, alternatively, to retire all or a portion of the debt with proceeds from repayment of the note receivable from Southern Union, which funds are available to the Company on a demand basis.

Based on the estimated borrowing rates currently available to us and our subsidiaries for loans with similar terms and average maturities, the aggregate fair value of our consolidated debt obligations at December 31, 2012 and 2011 was $1.81 billion and $2.13 billion, respectively. As of December 31, 2012 and 2011, the aggregate carrying amount of our consolidated debt obligations was $1.76 billion and $1.97 billion, respectively. The fair value of our consolidated debt obligations is a Level 2 valuation based on the observable inputs used for similar liabilities.

Term Loans. On March 26, 2012, the Company retired the $465 million term loan due June 2012 ($342 million of which was outstanding) of its wholly-owned LNG Holdings subsidiary, utilizing a portion of the merger consideration received in connection with the Citrus Merger.

In February 2012, the Company refinanced LNG Holdings’ $455 million term loan due March 2012 with an unsecured three-year term loan facility due February 2015, with LNG Holdings as borrower and PEPL and Trunkline LNG as guarantors and a floating interest rate tied to LIBOR plus a margin based on the rating of PEPL’s senior unsecured debt. Under LNG Holding's $455 million term loan, the ratio of consolidated funded debt to consolidated earnings before interest, taxes, depreciation and amortization, as defined therein, for Panhandle cannot exceed 5 times. The annualized interest rate for the LNG Holdings term loan was 1.84% at December 31, 2012.

Other. The Company's notes are subject to certain requirements, such as the maintenance of a fixed charge coverage ratio and a leverage ratio, which if not maintained, restrict the ability of the Company to make certain payments and impose limitations on the ability of the Company to subject its property to liens. Other covenants impose limitations on restricted payments, including dividends and loans to affiliates, and additional indebtedness. As of December 31, 2012, the Company is in compliance with these covenants.

As of December 31, 2012, the Company has scheduled long-term debt principal payments as follows:



Years Ended December 31,
2013	$	250
2014	—
2015	455
2016	—
2017	300
Thereafter	616
Total	$	1,621

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References + Details

Benefits

12 Months Ended

Dec. 31, 2012

Postemployment Benefits [Abstract]

Benefits

BENEFITS:

Postretirement Benefit Plans

The 2012 postretirement benefits expense reflects the impact of curtailment accounting as postretirement benefits for all active participants who did not meet certain criteria were eliminated. The Company previously had postretirement health care and life insurance plans (other postretirement plans) that covered substantially all employees. The health care plans provided for cost sharing between the Company and its retirees in the form of retiree contributions, deductibles and coinsurance on the amount the Company paid annually to provide future retiree health care coverage under certain of these plans.

Obligations and Funded Status

Other postretirement benefit liabilities are accrued on an actuarial basis during the years an employee provides services. The following tables contain information at the dates indicated about the obligations and funded status of the Company’s other postretirement plans.



	Successor			Predecessor
	December 31, 2012			March 25, 2012		December 31, 2011
Change in benefit obligation:
Benefit obligation at beginning of period	$	93		$	88	$	69
Service cost	—			1		3
Interest cost	1			1		4
Amendments	16			—		—
Actuarial loss and other	4			3		13
Benefits paid, net	(1		)	—		(1		)
Curtailments	(75		)	—		—
Benefit obligation at end of period	$	38		$	93	$	88
Change in plan assets:
Fair value of plan assets at beginning of period	$	82		$	75	$	68
Return on plan assets and other	3			5		—
Employer contributions	6			2		8
Benefits paid, net	(1		)	—		(1		)
Fair value of plan assets at end of period	$	90		$	82	$	75

Amount (overfunded) underfunded at end of period ⁽¹⁾	$	(52	)	$	11	$	13

Amounts recognized in accumulated other comprehensive income (pre-tax basis) consist of:
Net actuarial loss	$	(1	)	$	—	$	23
Prior service cost	16			—		1
	$	15		$	—	$	24


⁽¹⁾	Underfunded balance is recognized as a non-current liability in the consolidated balance sheets. Overfunded balance is recognized as a non-current asset in the consolidated balance sheets.

Components of Net Periodic Benefit Cost

The following tables set forth the components of net periodic benefit cost of the Company’s postretirement benefit plan for the periods presented:



	Successor			Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012			Period from January 1, 2012 to March 25, 2012			Years Ended December 31,
				Period from January 1, 2012 to March 25, 2012			2011			2010
Service cost	$	—		$	1		$	2		$	3
Interest cost	1			1			4			4
Expected return on plan assets	(3		)	(1		)	(3		)	(3		)
Prior service credit amortization	—			(1		)	(2		)	(2		)
Curtailment recognition⁽¹⁾	(11		)	—			—			—
Net periodic benefit cost	$	(13	)	$	—		$	1		$	2

⁽¹⁾

Subsequent to the Merger, the Company amended certain of its other postretirement employee benefit plans to prospectively restrict participation in the plans for certain active employees. The plan amendments resulted in the plans becoming currently over-funded and, accordingly, the Company recorded a gross pre-tax curtailment gain of $70 million, $59 million of which is subject to refund to customers; thus, the net curtailment gain recognition was $11 million.

The estimated prior service credit for other postretirement plans that will be amortized from accumulated other comprehensive income into net periodic benefit cost during 2013 is $1 million.

Assumptions. The weighted-average discount rate used in determining benefit obligations was 3.51%, 4.24% and 4.26% in the successor and predecessor periods in 2012 and at December 31, 2011, respectively.

The weighted-average assumptions used in determining net periodic benefit cost for the periods presented are shown in the table below:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Discount rate	3.64	%	4.26	%	5.54	%	6.00	%
Expected return on assets:
Tax exempt accounts	7.00	%	7.00	%	7.00	%	7.00	%
Taxable accounts	4.50	%	4.50	%	4.50	%	5.00	%

The Company employs a building block approach in determining the expected long-term rate of return on the plans’ assets with proper consideration for diversification and rebalancing. Historical markets are studied and long-term historical relationships between equities and fixed-income are preserved consistent with the widely accepted capital market principle that assets with higher volatility generate a greater return over the long run. Current market factors such as inflation and interest rates are evaluated before long-term market assumptions are determined. Peer data and historical returns are reviewed to check for reasonableness and appropriateness.

The assumed health care cost trend rates used to measure the expected cost of benefits covered by the plans are shown in the table below:



	Successor		Predecessor
	December 31, 2012		March 25, 2012		December 31, 2011
Health care cost trend rate assumed for next year	8.50	%	8.00	%	8.50	%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	4.50	%	4.75	%	4.75	%
Year that the rate reaches the ultimate trend rate	2020		2019		2019

Assumed health care cost trend rates have a significant effect on the amounts reported for health care plans. A one-percentage-point change in assumed health care cost trend rates would have the following effects:



	One Percentage Point Increase		One Percentage Point Decrease
Effect on accumulated postretirement benefit obligation	$	4	$	(3	)

Plan Assets. The Company’s overall investment strategy is to maintain an appropriate balance of actively managed investments with the objective of optimizing longer-term returns while maintaining a high standard of portfolio quality and achieving proper diversification. To achieve diversity within its other postretirement plan asset portfolio, the Company has targeted the following asset allocations: equity of 25% to 35%, fixed income of 65% to 75% and cash and cash equivalents of up to 10%. These target allocations are monitored by the Investment Committee of Southern Union’s Board of Directors in conjunction with an external investment advisor. On occasion, the asset allocations may fluctuate as compared to these guidelines as a result of Investment Committee actions.

The fair value of the Company’s other postretirement plan assets at the dates indicated by asset category is as follows:



	Successor		Predecessor
	December 31, 2012		December 31, 2011
Cash and cash equivalents	$	2	$	2
Mutual fund ⁽¹⁾	88		73
Total	$	90	$	75

⁽¹⁾

This fund of funds invests primarily in a diversified portfolio of equity, fixed income and short-term mutual funds. As of December 31, 2012, the fund was primarily comprised of approximately 17% large-cap U.S. equities, 3% small-cap U.S. equities, 10% international equities, 53% fixed income securities, 10% cash, and 7% in other investments. As of December 31, 2011, the fund was primarily comprised of approximately 19% large-cap U.S. equities, 2% small-cap U.S. equities, 10% international equities, 55% fixed income securities, 8% cash and 6% in other investments.

The other postretirement plan assets are classified as Level 1 assets within the fair-value hierarchy as their fair values are based on active market quotes. See Note 2 for information related to the framework used by the Company to measure the fair value of its other postretirement plan assets.

Contributions. The Company expects to contribute approximately $8 million to its other postretirement plans in 2013 and approximately $8 million annually thereafter until modified by rate case proceedings.

Benefit Payments. The Company’s estimate of expected benefit payments, which reflect expected future service, as appropriate, in each of the next five years and in the aggregate for the five years thereafter are shown in the table below:



Years	Expected Benefits Before Effect of Medicare Part D		Payments Medicare Part D Subsidy Receipts		Net
2013	$	3	$	—	$	3
2014	3		—		3
2015	3		—		3
2016	3		—		3
2017	3		—		3
2018 – 2022	12		2		10

The Medicare Prescription Drug Act provides for a prescription drug benefit under Medicare (Medicare Part D) as well as a federal subsidy to sponsors of retiree health care benefit plans that provide a prescription drug benefit that is at least actuarially equivalent to Medicare Part D.

Defined Contribution Plan

The Company sponsors a defined contribution savings plan (Savings Plan) that is available to all employees. The Company provided matching contributions of 100% of the first 5% of the participant’s compensation paid into the Savings Plan. Company contributions are 100% vested after five years of continuous service. Company contributions to the Savings Plan during the period from Acquisition (March 26, 2012) to December 31, 2012, the period from January 1, 2012 to March 25, 2012, and the years ended December 31, 2011 and 2010 were $3 million, $1 million, $5 million and $5 million, respectively.

In addition, the Company makes employer contributions to separate accounts, referred to as Retirement Power Accounts, within the defined contribution plan. The contribution amounts are determined as a percentage of compensation with the amount generally varying based on age and years of service. Company contributions are 100% vested after five years of continuous service. Company contributions to Retirement Power Accounts during the period from Acquisition (March 26, 2012) to December 31, 2012, the period from January 1, 2012 to March 25, 2012, and the years ended December 31, 2011 and 2010 were $2 million, $1 million, $6 million and $5 million, respectively.

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Implementation Guide (Q and A)
-Number FAS88
-Paragraph 63
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-2
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph q
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 8
-Subparagraph m
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 158
-Paragraph 7, 21, 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS106-2
-Paragraph 20, 21, 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 30
-Paragraph 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Taxes on Income

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Taxes on Income

TAXES ON INCOME:

The following tables provide a summary of the current and deferred components of income tax expense (benefit) from continuing operations for the periods presented:



	Successor			Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012			Period from January 1, 2012 to March 25, 2012			Years Ended December 31,
				Period from January 1, 2012 to March 25, 2012			2011			2010
Current expense (benefit):
Federal	$	(8	)	$	5		$	24		$	34
State	(2		)	1			(5		)	11
Total	(10		)	6			19			45
Deferred expense:
Federal	$	72		$	17		$	67		$	51
State	14			2			9			1
Total	86			19			76			52
Total income tax expense	$	76		$	25		$	95		$	97

Effective tax rate	46		%	38		%	36		%	40		%

The differences between the Company’s EITR and the U.S. federal income tax statutory rate for the periods presented were as follows:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Computed statutory income tax expense at 35%	$	57	$	23	$	92	$	86
Changes in income taxes resulting from:
Non-deductible executive compensation	11		—		—		—
State income taxes, net of federal income tax benefit	8		2		3		8
Other	—		—		—		3
Income tax expense	$	76	$	25	$	95	$	97

Deferred income taxes result from temporary differences between the financial statement carrying amounts and the tax basis of existing assets and liabilities. The table below summarizes the principal components of the Company’s deferred tax assets (liabilities) as follows:



	Successor			Predecessor
	December 31, 2012			December 31, 2011
Deferred income tax assets:
Other postretirement benefits	$	52		$	13
Derivative financial instruments (interest rates)	13			4
Other	18			20
Total deferred income tax assets	83			37

Deferred income tax liabilities:
Property, plant and equipment	(925		)	(559		)
Other	(2		)	(7		)
Total deferred income tax liabilities	(927		)	(566		)
Net deferred income tax liability	(844		)	(529		)
Less current income tax assets	9			9
Accumulated deferred income taxes	$	(853	)	$	(538	)

As of December 31, 2012, the Company has $1 million ($1 million, net of federal tax) of unrecognized tax benefits, none of which would impact the Company’s EITR if recognized. The Company does not expect that its unrecognized tax benefits will be reduced within the next 12 months.

The Company’s policy is to classify and accrue interest expense and penalties on income tax underpayments (overpayments) as a component of income tax expense in its consolidated statement of operations, which is consistent with the recognition of these items in prior reporting periods.

Southern Union and the Company are no longer subject to U.S. federal, state or local examinations for the tax periods prior to 2004.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

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-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
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+ Details

Derivative Instruments and Hedging Activities

12 Months Ended

Dec. 31, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES:

The Company is exposed to certain risks in its ongoing business operations. The primary risk managed by using derivative instruments is interest rate risk. Interest rate swaps and treasury rate locks are the principal derivative instruments used by the Company to manage interest rate risk associated with its long-term borrowings, although other interest rate derivative contracts may also be used from time to time. The Company recognizes all derivative assets and liabilities at fair value in the consolidated balance sheets.

Interest Rate Contracts. The Company may enter into interest rate swaps to manage its exposure to changes in interest payments on long-term debt attributable to movements in market interest rates, and may enter into treasury rate locks to manage its exposure to changes in future interest payments attributable to changes in treasury rates prior to the issuance of new long-term debt instruments.

Interest Rate Swaps. The Company had outstanding pay-fixed interest rate swaps with a total notional amount of $455 million to hedge the LNG Holdings $455 million term loan, which was refinanced in February 2012. These interest rate swaps were accounted for as cash flow hedges, with the effective portion of changes in their fair value recorded in Accumulated other comprehensive income and reclassified into Interest expense in the same periods during which the related interest payments on long-term debt impacted earnings. These swaps terminated in the first quarter of 2012.

Treasury Rate Locks. As of December 31, 2012, the Company had no outstanding treasury rate locks. However, certain of its treasury rate locks that settled in prior periods were associated with interest payments on outstanding long-term debt. During the predecessor periods, these treasury rate locks were accounted for as cash flow hedges, with the effective portion of their settled value recorded in accumulated other comprehensive income and reclassified into interest expense in the same periods during which the related interest payments on long-term debt impact earnings.

The Company had no asset derivative instruments at December 31, 2012 and December 31, 2011. The following table summarizes the fair value amounts of the Company’s liability derivative instruments and their location reported in the consolidated balance sheets at the dates indicated:



		Fair Value ⁽¹⁾
		Successor		Predecessor
	Balance Sheet Location	December 31, 2012		December 31, 2011
Cash Flow Hedges:
Interest rate contracts	Other current liabilities	$	—	$	4


⁽¹⁾	See Note 7 for additional fair value information.

The following tables summarize the location and amount (excluding income tax effects) of derivative instrument gains and losses reported in the Company’s consolidated financial statements for the periods presented:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Cash Flow Hedges:
Change in fair value – increase in accumulated other comprehensive income	$	—	$	—	$	1	$	13
Reclassification of unrealized loss from accumulated other comprehensive income – increase of interest expense	—		4		22		22

- Definition

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
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+ Details

Fair Value Measurement	12 Months Ended
Fair Value Measurement	Dec. 31, 2012
Fair Value Disclosures [Abstract]
Fair Value Measurement	FAIR VALUE MEASUREMENT: The Company did not have any plan assets or liabilities that are measured at fair value on a recurring basis at December 31, 2012. The Company did not have any Level 3 instruments measured at fair value using significant unobservable inputs at December 31, 2012 or December 31, 2011 and there were no transfers between hierarchy levels. The Company previously had outstanding Level 2 interest rate swap derivatives, which were valued using pricing models based on an income approach that discounted future cash flows to a present value amount. As of December 31, 2011, a liability of $4 million was included in the balance sheet for the fair value of interest rate swap derivative instruments. The approximate fair value of the Company’s cash and cash equivalents, accounts receivable and accounts payable is equal to book value, due to their short-term nature.

- 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

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-Name Statement of Financial Accounting Standard (FAS)
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
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+ Details

PROPERTY, PLANT AND EQUIPMENT

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure

PROPERTY, PLANT AND EQUIPMENT:

The following table provides a summary of property, plant and equipment at the dates indicated:



		Successor			Predecessor
	Lives in Years	December 31, 2012			December 31, 2011
Transmission	5 – 46	$	2,580		$	2,321
Gathering	26	114			108
Underground storage	5 – 46	306			322
General plant - LNG	5 – 40	966			1,119
General plant - other	3 – 40	110			176
Plant in service		4,076			4,046
Construction work in progress		45			42
Total property, plant and equipment		4,121			4,088
Accumulated depreciation and amortization		(57		)	(733		)
Net property, plant and equipment		$	4,064		$	3,355

As of December 31, 2011, property, plant and equipment included capitalized computer software costs of $34 million, net of accumulated amortization of $51 million. Amortization expense of capitalized computer software costs for the years ended December 31, 2011 and 2010 was $7 million and $7 million, respectively.

As of December 31, 2011, property, plant and equipment included contributions in aid of construction costs of $49 million, net of accumulated amortization of $5 million. Amortization expense of contributions in aid of construction costs for the years ended December 31, 2011 and 2010 was $2 million and $2 million, respectively.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

+ References + Details

SHARE-BASED COMPENSATION Share-Based Compensation

12 Months Ended

Dec. 31, 2012

Share-based Compensation [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

STOCK-BASED COMPENSATION

Stock Award Plans. The Third Amended 2003 Plan adopted by the stockholders of Southern Union Company allows for awards in the form of stock options (either incentive stock options or non-qualified options), SARs, stock bonus awards, restricted stock, performance units or other equity-based rights. The persons eligible to receive awards under the Third Amended 2003 Plan include all of the employees, directors, officers and agents of, and other service providers to, Southern Union Company and its affiliates and subsidiaries. Under the Third Amended 2003 Plan: (i) no participant may receive any calendar year awards covering more than 500,000 shares; (ii) the exercise price for a stock option may not be less than 100% of the fair market value of the common stock on the date of grant; and (iii) no award may be granted after September 28, 2013.

The fair value of each stock option and SAR award is estimated on the date of grant using a Black-Scholes option pricing model. The Company’s expected volatilities are based on historical volatility of Southern Union Company’s common stock. To the extent that volatility of Southern Union Company’s common stock price increases in the future, the estimates of the fair value of stock options and SARs granted in the future could increase, thereby increasing stock-based compensation expense in future periods. Additionally, the expected dividend yield is considered for each grant on the date of grant. The Company’s uses the simplified method in determining the expected term of stock options and SARs granted, which results in the use of the average midpoint between vesting of the awards and their contractual term for such estimate. The Company utilizes the simplified method primarily because Southern Union has experienced several acquisitions and divestitures during the contractual period for the current awards outstanding, resulting in a change in the employee mix and an acceleration of certain stock option and SAR exercise activity. Additionally, Southern Union has not experienced a full life cycle of exercise activity for employees associated with certain of its acquisitions. Because of the impact of these significant structural changes in Southern Union’s business operations and the resulting variations in employee exercise activity, the historical patterns of such exercise activity is not believed to be indicative of future behavior. In the future, as information regarding post-vesting termination becomes more accessible, the Company may change the method of deriving the expected term. This change could impact the fair value of stock options and SARs granted in the future. The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant.

All outstanding stock awards vested and were settled in 2012 in connection with the ETE Merger on March 26, 2012; therefore, no 2012 amounts have been presented in the following sections.

The following table represents the Black-Scholes estimated ranges under the Company’s plans for stock options and SARs awards for periods in which awards were granted.



		Year ended December 31, 2010
Expected volatility		32.79% to 32.82%
Expected dividend yield		2.47%
Risk-free interest rate		2.28% to 2.40%
Expected life		6 years

Stock Options. The following table provides information on stock options granted, exercised, forfeited, outstanding and exercisable for the periods presented.



	Shares Under Option		Weighted- Average Exercise Price
Outstanding December 31, 2009	263,059		$	20.42
Exercised	(59,156	)	20.92
Outstanding December 31, 2010	203,903		$	20.27
Exercised	(38,596	)	17.56
Outstanding December 31, 2011	165,307		$	20.90

Exercisable December 31, 2010	203,903		$	20.27
Exercisable December 31, 2011	165,307		20.90

SARS. The following table provides information on SARs granted, exercised, forfeited, outstanding and exercisable for the periods presented.



	SARs		Weighted-Average Exercise Price
Outstanding December 31, 2009	556,803		$	19.08
Granted	138,181		24.54
Exercised	(49,366	)	12.55
Forfeited	(28,815	)	19.35
Outstanding December 31, 2010	616,803		$	20.71
Exercised	(27,389	)	15.87
Forfeited	(30,512	)	27.41
Outstanding December 31, 2011	558,902		$	20.58

Exercisable December 31, 2010	308,799		$	20.90
Exercisable December 31, 2011	423,815		19.61

The SARs that have been awarded vest in equal installments on the first three anniversaries of the grant date. Each SAR entitles the holder to shares of Southern Union’s common stock equal to the fair market value of Southern Union’s common stock on the applicable exercise date in excess of the grant date price for each SAR.

The total fair value of options and SARs vested as of December 31, 2011 was $4 million. Compensation expense recognized related to stock options and SARs was approximately $1 million for the years ended December 31, 2011 and 2010. The aggregate intrinsic value of total options and SARs outstanding and exercisable at December 31, 2011 was $16 million and $13 million, respectively. The intrinsic value of options and SARs exercised during the year ended December 31, 2011 was approximately $1 million.

Restricted Stock Equity and Liability Units. The Third Amended 2003 Plan also provides for grants of restricted stock equity units, which are settled in shares of Southern Union Company common stock, and restricted stock liability units, which are settled in cash. The restrictions associated with a grant of restricted stock equity units under the Third Amended 2003 Plan generally expire equally over a period of three years. Restrictions on restricted stock liability units expire at the end of the applicable period, which is also the requisite service period.

There were no restricted stock equity awards granted during the years ended December 31, 2011 and 2010.

The following table provides information on restricted stock liability awards granted, released and forfeited for the periods presented.



	Number of Restricted Stock Liability Units Outstanding		Weighted-Average Grant Date Fair Value
Restricted shares at December 31, 2009	206,120		$	18.53
Granted	70,110		24.57
Released	(101,420	)	19.27
Forfeited	(8,940	)	18.49
Restricted shares at December 31, 2010	165,870		$	20.68
Granted	51,611		42.08
Released	(87,509	)	18.47
Forfeited	(4,918	)	18.97
Restricted shares at December 31, 2011	125,054		$	31.15

The total fair value of restricted stock liability units that were released during the year ended December 31, 2011 was $4 million. Compensation expense recognized related to restricted stock equity and liability units totaled $4 million and $2 million for the years ended December 31, 2011 and 2010, respectively.

The Company settled the restricted stock liability units released in 2011 and 2010 with cash payments of $4 million and $2 million, respectively.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

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-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Commitments and Contingencies

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies [Abstract]

Commitments and Contingencies Disclosure

COMMITMENTS AND CONTINGENCIES:

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.

Will Price. Will Price, an individual, filed actions in the U.S. District Court for the District of Kansas for damages against a number of companies, including the Company, alleging mis-measurement of natural gas volumes and Btu content, resulting in lower royalties to mineral interest owners. On September 19, 2009, the Court denied plaintiffs’ request for class certification. Plaintiffs have filed a motion for reconsideration, which the Court denied on March 31, 2010. The Company believes that its measurement practices conformed to the terms of its FERC natural gas tariffs, which were filed with and approved by FERC. As a result, the Company believes that it has meritorious defenses to the Will Price lawsuit (including FERC-related affirmative defenses, such as the filed rate/tariff doctrine, the primary/exclusive jurisdiction of FERC, and the defense that the Company complied with the terms of its tariffs). In the event that Plaintiffs refuse Panhandle’s pending request for voluntary dismissal, Panhandle will continue to vigorously defend the case. The Company believes it has no liability associated with this proceeding.

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 December 31, 2012 and December 31, 2011, the Company recorded litigation and other claim-related accrued liabilities of $6 million and $1 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.

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 registrations, 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.

Environmental Remediation

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 Panhandle 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 PRPs. 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.

Environmental Remediation Liabilities

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



	Successor		Predecessor
	December 31, 2012		December 31, 2011
Current	$	1	$	3
Non-current	5		4
Total environmental liabilities	$	6	$	7

Other Commitments and Contingencies

Controlled Group Pension Liabilities. Southern Union (including certain of its divisions) sponsors a number of defined benefit pension plans for employees. Under applicable pension and tax laws, upon being acquired by Southern Union, the Company became a member of Southern Union’s “controlled group” with respect to those plans and, along with Southern Union and any other members of that group, is jointly and severally liable for any failure by Southern Union (along with any other persons that may be or become a sponsor of any such plan) to fund any of these pension plans or to pay any unfunded liabilities that these plans may have if they are ever terminated. In addition, if any of the obligations of any of these pension plans is not paid when due, a lien in favor of that plan or the Pension Benefit Guaranty Corporation may be created against the assets of each member of Southern Union’s controlled group, including the Company and each of its subsidiaries. Based on the latest actuarial information available, the aggregate amount of the projected benefit obligations of these pension plans was approximately $243 million and the estimated fair value of all of the assets of these plans was approximately $155 million.

Unclaimed Property Audits. 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.

See Note 4 for other potential regulatory matters applicable to the Company.

Future Regulatory Compliance Commitments

Air Quality Control. On April 17, 2012 the EPA issued the Oil and Natural Gas Sector New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants. The standards revise the new source performance standards for volatile organic compounds from leaking components at onshore natural gas processing plants and new source performance standards for sulfur dioxide emissions from natural gas processing plants. The EPA also established standards for certain oil and gas operations not covered by the existing standards. In addition to the operations covered by the existing standards, the newly established standards regulate volatile organic compound emissions from gas wells, centrifugal compressors, reciprocating compressors, pneumatic controllers and storage vessels. The Company is reviewing the new standards to determine the impact on its operations.

In August 2010, the EPA finalized a rule that requires reductions in a number of pollutants, including formaldehyde and carbon monoxide, for certain engines regardless of size at Area Sources (sources that emit less than 10 tons per year of any one Hazardous Air Pollutant (HAP) or 25 tons per year of all HAPs) and engines less than 500 horsepower at Major Sources (sources that emit 10 tons per year or more of any one HAP or 25 tons per year of all HAPs). Compliance is required by October 2013. It is anticipated that the limits adopted in this rule will be used in a future EPA rule that is scheduled to be finalized in 2013, with compliance required in 2016. This future rule is expected to require reductions in formaldehyde and carbon monoxide emissions from engines greater than 500 horsepower at Major Sources.

Nitrogen oxides are the primary air pollutant from natural gas-fired engines. Nitrogen oxide emissions may form ozone in the atmosphere. In 2008, the EPA lowered the ozone standard to 75 ppb with compliance anticipated in 2013 to 2015. In January 2010, the EPA proposed lowering the standard to 60 to 70 ppb in lieu of the 75 ppb standard, with compliance required in 2014 or later. In September 2011, the EPA decided to rescind the proposed lower ozone standard and begin the process to implement the 75 ppb ozone standard established in 2008.

In January 2010, the EPA finalized a 100 ppb one-hour nitrogen dioxide standard. The rule requires the installation of new nitrogen dioxide monitors in urban communities and roadways by 2013. This new monitoring may result in additional nitrogen dioxide non-attainment areas. In addition, ambient air quality modeling may be required to demonstrate compliance with the new standard.

The Company is currently reviewing the potential impacts of the August 2010 Area Source National Emissions Standards for Hazardous Air Pollutants rule, implementation of the 2008 ozone standard and the new nitrogen dioxide standard on its operations and the potential costs associated with the installation of emission control systems on its existing engines. The ultimate costs associated with these activities cannot be estimated with any certainty at this time, but the Company believes, based on the current understanding of the current and proposed rules, such costs will not have a material adverse effect on its consolidated financial position, results of operations or cash flows.

The KDHE set certain contingency measures as part of the agency’s ozone maintenance plan for the Kansas City area. Previously, it was anticipated that these measures would be revised to conform to the requirements of the EPA ozone standard discussed above. KDHE recently indicated that the Kansas City area will be designated as attainment for the ozone standard in 2012, and will not be pursing any emissions reductions from the Company’s operations unless there are changes in the future regarding the status of the Kansas City area.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

QUARTERLY OPERATIONS

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Text Block]

QUARTERLY FINANCIAL DATA (UNAUDITED):

The following table provides certain quarterly financial information for the periods presented:



	Predecessor	Successor
	Period from January 1, 2012 to March 25, 2012	Period from March 26, 2012 to March 31, 2012		Quarters Ended			Total Period from March 26, 2012 to December 31, 2012
	Period from January 1, 2012 to March 25, 2012	Period from March 26, 2012 to March 31, 2012		June 30, 2012	September 30, 2012	December 31, 2012	Total Period from March 26, 2012 to December 31, 2012
Operating revenues	194	13		185	189	205	592
Operating income	88	(26	)	65	77	89	205
Net income	40	(19	)	30	37	40	88


		Predecessor
		Quarters Ended
		March 31, 2011		June 30, 2011	September 30, 2011	December 31, 2011	Total
Operating revenues		202		190	193	219	804
Operating income		91		88	82	101	362
Net income		46		40	35	47	168

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Basis of Presentation and Significant Accounting Policies [Policy Text Block]

Basis of Presentation. The Company’s consolidated financial statements have been prepared in accordance with GAAP.

Consolidation, Policy [Policy Text Block]

Business Combination Accounting [Policy Text Block]

Use of Estimates, Policy [Policy Text Block]

Cash and Cash Equivalents, Policy [Policy Text Block]

Non-cash investing and financing activities and supplemental cash flow information are as follows:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Supplemental Cash Flow Information:
Cash paid for interest, net of interest capitalized	$	75	$	17	$	106	$	102
Cash paid for income taxes	32		—		35		22

Inventory, Policy [Policy Text Block]

The following table presents the components of inventory at the dates indicated:



	Successor		Predecessor
	December 31, 2012		December 31, 2011
Current
Natural gas ⁽¹⁾	$	124	$	96
Materials and supplies	20		19
Total current	144		115
Non-Current
Natural gas ⁽¹⁾	—		3
	$	144	$	118


⁽¹⁾	Natural gas volumes held for operations at December 31, 2012 and 2011 were 34,891,000 MMBtu and 29,718,000 MMBtu, respectively.

Natural Gas Exchanges [Policy Text Block]

Fuel Tracker [Policy Text Block]

Property, Plant and Equipment, Policy [Policy Text Block]

Property, Plant and Equipment.

Depreciation. The Company computes depreciation expense using the straight-line method.

For additional information, see Note 13.

Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]

Goodwill and Intangible Assets, Policy [Policy Text Block]

Environmental Cost, Expense Policy [Policy Text Block]

Revenue Recognition, Policy [Policy Text Block]

Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]

The following table presents the balance in the allowance for doubtful accounts and activity for the periods presented.



	Years Ended December 31,
	2011		2010
Beginning balance	$	1	$	1
Additions: charged to cost and expenses	—		—
Deductions: write-off of uncollectible accounts	—		—
Other	—		—
Ending balance	$	1	$	1

Amounts related to the allowance for doubtful accounts were not material as of and during the year ended December 31, 2012.

The following table presents the relative contribution to the Company’s total operating revenue of each customer that comprised at least 10% of its operating revenues for the periods presented:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
BG LNG Services	31	%	30	%	30	%	29	%
ProLiance	12		13		13		13
Other top 10 customers	20		24		21		23
Remaining customers	37		33		36		35
Total percentage	100	%	100	%	100	%	100	%

Pension and Other Postretirement Plans, Policy [Policy Text Block]

Derivatives, Policy [Policy Text Block]

Fair Value of Financial Instruments, Policy [Policy Text Block]


•	Level 1 – Observable inputs such as quoted prices in active markets for identical assets or liabilities;

•

See Note 12 and Note 9 for additional information regarding the assets and liabilities of the Company measured on a recurring and nonrecurring basis, respectively.

Asset Retirement Obligations, Policy [Policy Text Block]

See Note 6 for additional related information.

Income Tax, Policy [Policy Text Block]

Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Significant Accounting Policies [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

Non-cash investing and financing activities and supplemental cash flow information are as follows:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Supplemental Cash Flow Information:
Cash paid for interest, net of interest capitalized	$	75	$	17	$	106	$	102
Cash paid for income taxes	32		—		35		22

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

The following table presents the balance in the allowance for doubtful accounts and activity for the periods presented.



	Years Ended December 31,
	2011		2010
Beginning balance	$	1	$	1
Additions: charged to cost and expenses	—		—
Deductions: write-off of uncollectible accounts	—		—
Other	—		—
Ending balance	$	1	$	1

Schedule of Inventory, Current [Table Text Block]

The following table presents the components of inventory at the dates indicated:



	Successor		Predecessor
	December 31, 2012		December 31, 2011
Current
Natural gas ⁽¹⁾	$	124	$	96
Materials and supplies	20		19
Total current	144		115
Non-Current
Natural gas ⁽¹⁾	—		3
	$	144	$	118


⁽¹⁾	Natural gas volumes held for operations at December 31, 2012 and 2011 were 34,891,000 MMBtu and 29,718,000 MMBtu, respectively.

Revenue from External Customers by Products and Services [Table Text Block]

The following table presents the relative contribution to the Company’s total operating revenue of each customer that comprised at least 10% of its operating revenues for the periods presented:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
BG LNG Services	31	%	30	%	30	%	29	%
ProLiance	12		13		13		13
Other top 10 customers	20		24		21		23
Remaining customers	37		33		36		35
Total percentage	100	%	100	%	100	%	100	%

ETE Merger and Holdco Transaction (Tables)

12 Months Ended

Dec. 31, 2012

ETE Merger and Holdco Transaction [Abstract]

Business acquisition

The table below represents the amounts allocated to Panhandle’s tangible and intangible assets and liabilities as of March 26, 2012 based upon management’s estimate of their respective fair values. Certain amounts included in the purchase price allocation, as of December 31, 2012, may have been changed from amounts previously reflected based on management’s review of the valuation. The goodwill resulting from the Merger was primarily due to expected commercial and operational synergies and is not deductible for tax purposes.



Cash and cash equivalents	$	—
Other current assets	229
Property and equipment	4,093
Goodwill	1,785
Identified intangibles ⁽¹⁾	55
Other non-current assets	783
Long-term debt, including current portion	(1,780		)
Deferred income taxes	(773		)
Other liabilities	(431		)
Total fair value of partners’ capital	$	3,961


⁽¹⁾	Identified intangibles will be amortized over a life of approximately 17.5 years and are included in Other non-current assets in the consolidated balance sheets.

- Definition

Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1486-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph F4
-Subparagraph e
-Appendix F

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 52
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2012

The following tables provide a summary of related party transactions for the periods presented:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Transportation and storage of natural gas ⁽¹⁾	$	7	$	1	$	3	$	3
Operation and maintenance and general-affiliate:
Management and royalty fees	5		5		20		19
Corporate services - Southern Union	47		9		32		31
Other expenses ⁽²⁾	9		—		6		5
Other income, net:
Interest income — Southern Union and subsidiaries	2		2		9		9


⁽¹⁾	Represents transportation and storage revenues with ETC, a subsidiary of ETP (in the successor period) and MGE, a Southern Union division.


⁽²⁾	Represents primarily insurance costs and corporate charges for merger-related employee expenses from ETE offset by expenses attributable to services provided by Panhandle on behalf of other affiliate companies.

The following table provides a summary of the related party balances included in the consolidated balance sheets at the dates indicated:



	Successor		Predecessor
	December 31, 2012		December 31, 2011
Notes receivable from related party — Southern Union and subsidiaries:
Current	$	—	$	342
Non-current	831		688
	$	831	$	1,030

Accounts receivable from related companies ⁽¹⁾	$	14	$	6

Accounts payable to related companies:
Southern Union — income taxes ⁽²⁾	$	—	$	33
Southern Union — other ⁽³⁾	26		19
Other ⁽⁴⁾	1		—
	$	27	$	52


(1)	Accounts receivable from related companies reflected above primarily related to services provided for ETE, ETP, Citrus, MGE and other affiliates. The December 31, 2011 balance also included interest income associated with a note receivable from an affiliate, which was repaid on March 26, 2012.


(2)	Accounts payable from related companies reflected above related to income taxes payable to Southern Union per the tax sharing agreement to provide for taxes to be remitted upon the filing of the tax return.


(3)	Accounts payable from related companies reflected above primarily related to payroll funding including merger-related expenses, provided by Southern Union. The December 31, 2011 amount was net of insurance proceeds of $2 million owed by Southern Union to the Company.


(4)	Accounts payable from related companies reflected above primarily related to various administrative and operating costs paid by other affiliate companies on behalf of the Company.

ASSET RETIREMENT OBLIGATIONS Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2012

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation



	Successor			Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012			Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
				Period from January 1, 2012 to March 25, 2012		2011			2010
Beginning balance	$	41		$	41	$	57		$	58
Incurred	1			—		1			29
Revisions	3			—		—			(11		)
Settled	(5		)	—		(17		)	(20		)
Accretion expense	2			—		—			1
Ending balance	$	42		$	41	$	41		$	57

Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2012

Statement of Other Comprehensive Income [Abstract]

Schedule Of Comprehensive Income Loss Tax

The tables below set forth the tax amounts included in the respective components of other comprehensive income for the periods presented:



	Successor			Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012			Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
				Period from January 1, 2012 to March 25, 2012		2011			2010
Income taxes included in other comprehensive income:
Reclassification of unrealized loss on interest rate hedges into earnings	$	—		$	2	$	9		$	9
Change in fair value of interest rate hedges	—			—		(1		)	(5		)
Actuarial loss relating to postretirement benefits	(6		)	—		(6		)	—
Reclassification of prior service credit relating to other postretirement benefits into earnings	—			—		(1		)	(1		)
	$	(6	)	$	2	$	1		$	3

Schedule of Accumulated Other Comprehensive Income (Loss)

The table below presents the components in accumulated other comprehensive loss as of the dates indicated:



	Successor			Predecessor
	December 31, 2012			December 31, 2011
Other postretirement plan - net actuarial loss and prior service costs, net	$	(9	)	$	(13	)
Interest rate hedges, net	—			(3		)
Total accumulated other comprehensive loss, net of tax	$	(9	)	$	(16	)

Debt Obligations (Tables)

12 Months Ended

Dec. 31, 2012

Debt Disclosure [Abstract]

Schedule Of Debt Instruments

The following table sets forth the debt obligations of the Company at the dates indicated:



	Successor			Predecessor
	December 31, 2012			December 31, 2011
6.05% Senior Notes due 2013	$	250		$	250
6.20% Senior Notes due 2017	300			300
8.125% Senior Notes due 2019	150			150
7.00% Senior Notes due 2029	66			66
7.00% Senior Notes due 2018	400			400
Term Loans due 2012	—			797
Term Loan due 2015	455			—
Net premiums on long-term debt	—			3
Unamortized fair value adjustments	136			—
Total debt outstanding	1,757			1,966
Current portion of long-term debt	(258		)	(342		)
Total long-term debt	$	1,499		$	1,624

Schedule of Maturities of Long-term Debt

As of December 31, 2012, the Company has scheduled long-term debt principal payments as follows:



Years Ended December 31,
2013	$	250
2014	—
2015	455
2016	—
2017	300
Thereafter	616
Total	$	1,621

- 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

+ Details

Benefits (Tables)

12 Months Ended

Dec. 31, 2012

Postemployment Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The following tables contain information at the dates indicated about the obligations and funded status of the Company’s other postretirement plans.



	Successor			Predecessor
	December 31, 2012			March 25, 2012		December 31, 2011
Change in benefit obligation:
Benefit obligation at beginning of period	$	93		$	88	$	69
Service cost	—			1		3
Interest cost	1			1		4
Amendments	16			—		—
Actuarial loss and other	4			3		13
Benefits paid, net	(1		)	—		(1		)
Curtailments	(75		)	—		—
Benefit obligation at end of period	$	38		$	93	$	88
Change in plan assets:
Fair value of plan assets at beginning of period	$	82		$	75	$	68
Return on plan assets and other	3			5		—
Employer contributions	6			2		8
Benefits paid, net	(1		)	—		(1		)
Fair value of plan assets at end of period	$	90		$	82	$	75

Amount (overfunded) underfunded at end of period ⁽¹⁾	$	(52	)	$	11	$	13

Amounts recognized in accumulated other comprehensive income (pre-tax basis) consist of:
Net actuarial loss	$	(1	)	$	—	$	23
Prior service cost	16			—		1
	$	15		$	—	$	24


⁽¹⁾	Underfunded balance is recognized as a non-current liability in the consolidated balance sheets. Overfunded balance is recognized as a non-current asset in the consolidated balance sheets.

Schedule of Net Benefit Costs [Table Text Block]

The following tables set forth the components of net periodic benefit cost of the Company’s postretirement benefit plan for the periods presented:



	Successor			Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012			Period from January 1, 2012 to March 25, 2012			Years Ended December 31,
				Period from January 1, 2012 to March 25, 2012			2011			2010
Service cost	$	—		$	1		$	2		$	3
Interest cost	1			1			4			4
Expected return on plan assets	(3		)	(1		)	(3		)	(3		)
Prior service credit amortization	—			(1		)	(2		)	(2		)
Curtailment recognition⁽¹⁾	(11		)	—			—			—
Net periodic benefit cost	$	(13	)	$	—		$	1		$	2

⁽¹⁾

Schedule of Assumptions Used [Table Text Block]

The weighted-average assumptions used in determining net periodic benefit cost for the periods presented are shown in the table below:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Discount rate	3.64	%	4.26	%	5.54	%	6.00	%
Expected return on assets:
Tax exempt accounts	7.00	%	7.00	%	7.00	%	7.00	%
Taxable accounts	4.50	%	4.50	%	4.50	%	5.00	%

Schedule of Health Care Cost Trend Rates [Table Text Block]

The assumed health care cost trend rates used to measure the expected cost of benefits covered by the plans are shown in the table below:



	Successor		Predecessor
	December 31, 2012		March 25, 2012		December 31, 2011
Health care cost trend rate assumed for next year	8.50	%	8.00	%	8.50	%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	4.50	%	4.75	%	4.75	%
Year that the rate reaches the ultimate trend rate	2020		2019		2019

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]



	One Percentage Point Increase		One Percentage Point Decrease
Effect on accumulated postretirement benefit obligation	$	4	$	(3	)

Schedule of Allocation of Plan Assets [Table Text Block]

The fair value of the Company’s other postretirement plan assets at the dates indicated by asset category is as follows:



	Successor		Predecessor
	December 31, 2012		December 31, 2011
Cash and cash equivalents	$	2	$	2
Mutual fund ⁽¹⁾	88		73
Total	$	90	$	75

Schedule of Expected Benefit Payments [Table Text Block]



Years	Expected Benefits Before Effect of Medicare Part D		Payments Medicare Part D Subsidy Receipts		Net
2013	$	3	$	—	$	3
2014	3		—		3
2015	3		—		3
2016	3		—		3
2017	3		—		3
2018 – 2022	12		2		10

- Definition

Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2439-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2417-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2410-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=21916443&loc=d3e4179-114921

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 158
-Paragraph 4, 7, 16, 20, 21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5, 6, 7
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Taxes on Income (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense (Benefit) and Effective Income Tax Rate

The following tables provide a summary of the current and deferred components of income tax expense (benefit) from continuing operations for the periods presented:



	Successor			Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012			Period from January 1, 2012 to March 25, 2012			Years Ended December 31,
				Period from January 1, 2012 to March 25, 2012			2011			2010
Current expense (benefit):
Federal	$	(8	)	$	5		$	24		$	34
State	(2		)	1			(5		)	11
Total	(10		)	6			19			45
Deferred expense:
Federal	$	72		$	17		$	67		$	51
State	14			2			9			1
Total	86			19			76			52
Total income tax expense	$	76		$	25		$	95		$	97

Effective tax rate	46		%	38		%	36		%	40		%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The table below summarizes the principal components of the Company’s deferred tax assets (liabilities) as follows:



	Successor			Predecessor
	December 31, 2012			December 31, 2011
Deferred income tax assets:
Other postretirement benefits	$	52		$	13
Derivative financial instruments (interest rates)	13			4
Other	18			20
Total deferred income tax assets	83			37

Deferred income tax liabilities:
Property, plant and equipment	(925		)	(559		)
Other	(2		)	(7		)
Total deferred income tax liabilities	(927		)	(566		)
Net deferred income tax liability	(844		)	(529		)
Less current income tax assets	9			9
Accumulated deferred income taxes	$	(853	)	$	(538	)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The differences between the Company’s EITR and the U.S. federal income tax statutory rate for the periods presented were as follows:



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Computed statutory income tax expense at 35%	$	57	$	23	$	92	$	86
Changes in income taxes resulting from:
Non-deductible executive compensation	11		—		—		—
State income taxes, net of federal income tax benefit	8		2		3		8
Other	—		—		—		3
Income tax expense	$	76	$	25	$	95	$	97

Derivative Instrument and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value



		Fair Value ⁽¹⁾
		Successor		Predecessor
	Balance Sheet Location	December 31, 2012		December 31, 2011
Cash Flow Hedges:
Interest rate contracts	Other current liabilities	$	—	$	4

Derivatives Effect On Income Table



	Successor		Predecessor
	Period from Acquisition (March 26, 2012) to December 31, 2012		Period from January 1, 2012 to March 25, 2012		Years Ended December 31,
			Period from January 1, 2012 to March 25, 2012		2011		2010
Cash Flow Hedges:
Change in fair value – increase in accumulated other comprehensive income	$	—	$	—	$	1	$	13
Reclassification of unrealized loss from accumulated other comprehensive income – increase of interest expense	—		4		22		22

- Definition

Tabular disclosure of the location and amount of gains and losses reported in the statement of financial performance, or when applicable, the statement of financial position. For example, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges and (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges.

+ References + Details

PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

The following table provides a summary of property, plant and equipment at the dates indicated:



		Successor			Predecessor
	Lives in Years	December 31, 2012			December 31, 2011
Transmission	5 – 46	$	2,580		$	2,321
Gathering	26	114			108
Underground storage	5 – 46	306			322
General plant - LNG	5 – 40	966			1,119
General plant - other	3 – 40	110			176
Plant in service		4,076			4,046
Construction work in progress		45			42
Total property, plant and equipment		4,121			4,088
Accumulated depreciation and amortization		(57		)	(733		)
Net property, plant and equipment		$	4,064		$	3,355

SHARE-BASED COMPENSATION Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The following table represents the Black-Scholes estimated ranges under the Company’s plans for stock options and SARs awards for periods in which awards were granted.



		Year ended December 31, 2010
Expected volatility		32.79% to 32.82%
Expected dividend yield		2.47%
Risk-free interest rate		2.28% to 2.40%
Expected life		6 years

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Stock Options. The following table provides information on stock options granted, exercised, forfeited, outstanding and exercisable for the periods presented.



	Shares Under Option		Weighted- Average Exercise Price
Outstanding December 31, 2009	263,059		$	20.42
Exercised	(59,156	)	20.92
Outstanding December 31, 2010	203,903		$	20.27
Exercised	(38,596	)	17.56
Outstanding December 31, 2011	165,307		$	20.90

Exercisable December 31, 2010	203,903		$	20.27
Exercisable December 31, 2011	165,307		20.90

SarsExercisePriceRange [Table Text Block]

SARS. The following table provides information on SARs granted, exercised, forfeited, outstanding and exercisable for the periods presented.



	SARs		Weighted-Average Exercise Price
Outstanding December 31, 2009	556,803		$	19.08
Granted	138,181		24.54
Exercised	(49,366	)	12.55
Forfeited	(28,815	)	19.35
Outstanding December 31, 2010	616,803		$	20.71
Exercised	(27,389	)	15.87
Forfeited	(30,512	)	27.41
Outstanding December 31, 2011	558,902		$	20.58

Exercisable December 31, 2010	308,799		$	20.90
Exercisable December 31, 2011	423,815		19.61

Schedule Of Share Based Compensation Restricted Stock Liability Units Award Activity [Table Text Block]

The following table provides information on restricted stock liability awards granted, released and forfeited for the periods presented.



	Number of Restricted Stock Liability Units Outstanding		Weighted-Average Grant Date Fair Value
Restricted shares at December 31, 2009	206,120		$	18.53
Granted	70,110		24.57
Released	(101,420	)	19.27
Forfeited	(8,940	)	18.49
Restricted shares at December 31, 2010	165,870		$	20.68
Granted	51,611		42.08
Released	(87,509	)	18.47
Forfeited	(4,918	)	18.97
Restricted shares at December 31, 2011	125,054		$	31.15

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies [Abstract]

Environmental Liabilities Table



	Successor		Predecessor
	December 31, 2012		December 31, 2011
Current	$	1	$	3
Non-current	5		4
Total environmental liabilities	$	6	$	7

QUARTERLY OPERATIONS Quarterly Operations (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

The following table provides certain quarterly financial information for the periods presented:



	Predecessor	Successor
	Period from January 1, 2012 to March 25, 2012	Period from March 26, 2012 to March 31, 2012		Quarters Ended			Total Period from March 26, 2012 to December 31, 2012
	Period from January 1, 2012 to March 25, 2012	Period from March 26, 2012 to March 31, 2012		June 30, 2012	September 30, 2012	December 31, 2012	Total Period from March 26, 2012 to December 31, 2012
Operating revenues	194	13		185	189	205	592
Operating income	88	(26	)	65	77	89	205
Net income	40	(19	)	30	37	40	88


		Predecessor
		Quarters Ended
		March 31, 2011		June 30, 2011	September 30, 2011	December 31, 2011	Total
Operating revenues		202		190	193	219	804
Operating income		91		88	82	101	362
Net income		46		40	35	47	168

Description of the Business (Details)	12 Months Ended
Description of the Business (Details)	Dec. 31, 2012
General partnership
Description of the Business
General partnership interest	1.00%
Limited partnership
Description of the Business
Limited partnership interest	99.00%

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Policies - Inventory (Details)
$ in Millions

Dec. 31, 2012

USD ($)

MMbtu

Dec. 31, 2011

USD ($)

MMbtu

Successor

Natural Gas Volumes | MMbtu

34,891,000

Natural Gas Inventory

^[1]

$ 124

Inventory, Raw Materials and Supplies

System natural gas and operating supplies

144

Inventory, Gas in Storage Underground, Noncurrent

^[1]

Energy Related Inventory

$ 144

Predecessor

Natural Gas Volumes | MMbtu

29,718,000

Natural Gas Inventory

^[1]

$ 96

Inventory, Raw Materials and Supplies

System natural gas and operating supplies

115

Inventory, Gas in Storage Underground, Noncurrent

^[1]

Energy Related Inventory

$ 118

[1]	Natural gas volumes held for operations at December 31, 2012 and 2011 were 34,891,000 MMBtu and 29,718,000 MMBtu, respectively.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - Predecessor - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Beginning balance	$ 1	$ 1
Additions: charged (credited) to expense	0	0
Deductions: write-off of uncollectible accounts	0	0
Other	0	0
Ending balance	$ 1	$ 1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Policies - Top Customers (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Successor
Entity-Wide Revenue, Major Customer, Percentage		100.00%
Predecessor
Entity-Wide Revenue, Major Customer, Percentage	100.00%		100.00%	100.00%
BG LNG Services \| Successor
Entity-Wide Revenue, Major Customer, Percentage		31.00%
BG LNG Services \| Predecessor
Entity-Wide Revenue, Major Customer, Percentage	30.00%		30.00%	29.00%
ProLiance \| Successor
Entity-Wide Revenue, Major Customer, Percentage		12.00%
ProLiance \| Predecessor
Entity-Wide Revenue, Major Customer, Percentage	13.00%		13.00%	13.00%
Other Top 10 Customers \| Successor
Entity-Wide Revenue, Major Customer, Percentage		20.00%
Other Top 10 Customers \| Predecessor
Entity-Wide Revenue, Major Customer, Percentage	24.00%		21.00%	23.00%
Remaining Customers \| Successor
Entity-Wide Revenue, Major Customer, Percentage		37.00%
Remaining Customers \| Predecessor
Entity-Wide Revenue, Major Customer, Percentage	33.00%		36.00%	35.00%

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Successor
Restricted Cash and Cash Equivalents Items
Interest Paid, Net		$ 75
Income Taxes Paid, Net		$ 32
Predecessor
Restricted Cash and Cash Equivalents Items
Interest Paid, Net	$ 17		$ 106	$ 102
Income Taxes Paid, Net	$ 0		$ 35	$ 22

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Politicies - Period End Cash Balances (Details) - USD ($) $ in Millions	Dec. 31, 2012	Mar. 25, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Successor
Cash and Cash Equivalents
Cash and cash equivalents	$ 0	$ 0
Predecessor
Cash and Cash Equivalents
Cash and cash equivalents		$ 0	$ 0	$ 0	$ 0

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6676-107765

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3044-108585

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 1
-Article 5

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 7, 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 7
-Footnote 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 8, 9
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

ETE Merger and Holdco Transaction (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2012	Oct. 05, 2012	Mar. 25, 2012
Merger related expenses		$ 48
Net gain due to curtailment of postretirement employee benefit plans		$ 11
Intangible asset, estimated useful life			17 years 6 months
Citrus
Percentage owned by equity investment		50.00%	50.00%
Total merger amount					$ 2,000
Merger amount, in cash					$ 1,900
Merger amount, in common units	$ 105
Maximum contribution equity interest merger	$ 1,450
ETE \| Holdco
Ownership of Parent				60.00%
ETP \| Holdco
Ownership of Parent				40.00%

ETE Merger and Holdco Transaction (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2012

Mar. 25, 2012

ETE Merger and Holdco Transacation [Abstract]

Cash and cash equivalents

$ 0

Other current assets

229

Property and equipment

4,093

Goodwill

1,785

Identified intangibles (1)

^[1]

Other non-current assets

783

Long-term debt, including current portion

(1,780)

Deferred income taxes

(773)

Other liabilities

(431)

Total fair value of partners’ capital

$ 3,961

Intangible asset, estimated useful life

17 years 6 months

[1]	Identified intangibles will be amortized over a life of approximately 17.5 years and are included in Other non-current assets in the consolidated balance sheets.

Related Party (Narrative) (Details)	Mar. 25, 2012
Related Party Transactions Phantoms [Abstract]
Debt Instrument, Basis Spread on Variable Rate	1.125%

Related Party Transactions (Details) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

12 Months Ended

Mar. 25, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Successor

Other income, net:

Interest income

$ 2

Successor | Southern Union

Operation and maintenance:

Transportation and storage of natural gas

^[1]

Other income, net:

Interest income

Successor | Affiliated Entity

Operation and maintenance:

Management and royalty fees

Cost of Services

Other expenses (2)

^[2]

$ 9

Predecessor

Other income, net:

Interest income

$ 2

$ 9

Predecessor | Southern Union

Operation and maintenance:

Transportation and storage of natural gas

^[1]

Other income, net:

Interest income

Predecessor | Affiliated Entity

Operation and maintenance:

Management and royalty fees

Cost of Services

Other expenses (2)

^[2]

$ 0

$ 6

$ 5

[1]	Represents transportation and storage revenues with ETC, a subsidiary of ETP (in the successor period) and MGE, a Southern Union division.
[2]	Represents primarily insurance costs and corporate charges for merger-related employee expenses from ETE offset by expenses attributable to services provided by Panhandle on behalf of other affiliate companies.

Related Party Balances (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2011

Dec. 31, 2012

Southern Union

Related Party Transaction

Insurance Proceeds - related party

$ 2

Successor

Related Party Transaction

Note receivable - related party, current

$ 0

Notes receivable - related party, noncurrent

831

Notes Receivable - related party

831

Accounts receivable — related parties (1)

^[1]

Accounts payable — related parties:

Successor | Southern Union

Related Party Transaction

Note receivable - related party, current

Notes receivable - related party, noncurrent

831

Successor | Other accounts payable

Related Party Transaction

Accounts payable — related parties:

^[2]

Successor | Other accounts payable | Southern Union

Related Party Transaction

Accounts payable — related parties:

^[3]

Successor | Income Taxes | Southern Union

Related Party Transaction

Accounts payable — related parties:

^[4]

$ 0

Predecessor

Related Party Transaction

Note receivable - related party, current

342

Notes receivable - related party, noncurrent

688

Notes Receivable - related party

1,030

Accounts receivable — related parties (1)

^[1]

Accounts payable — related parties:

Predecessor | Southern Union

Related Party Transaction

Note receivable - related party, current

342

Notes receivable - related party, noncurrent

688

Predecessor | Other accounts payable

Related Party Transaction

Accounts payable — related parties:

^[2]

Predecessor | Other accounts payable | Southern Union

Related Party Transaction

Accounts payable — related parties:

^[3]

Predecessor | Income Taxes | Southern Union

Related Party Transaction

Accounts payable — related parties:

^[4]

$ 33

[1]	Accounts receivable from related companies reflected above primarily related to services provided for ETE, ETP, Citrus, MGE and other affiliates. The December 31, 2011 balance also included interest income associated with a note receivable from an affiliate, which was repaid on March 26, 2012.
[2]	Accounts payable from related companies reflected above primarily related to various administrative and operating costs paid by other affiliate companies on behalf of the Company.
[3]	Accounts payable from related companies reflected above primarily related to payroll funding including merger-related expenses, provided by Southern Union. The December 31, 2011 amount was net of insurance proceeds of $2 million owed by Southern Union to the Company.
[4]	Accounts payable from related companies reflected above related to income taxes payable to Southern Union per the tax sharing agreement to provide for taxes to be remitted upon the filing of the tax return.

ASSET RETIREMENT OBLIGATIONS Asset Retirement Obligations - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2012
Asset Retirement Obligation, Liabilities Incurred			$ 8	$ 34
Asset Retirement Obligation, Liabilities Settled	$ 17	$ 20
Other ARO Assets
ARO Underlying Asset					$ 1
Offshore
Asset Retirement Obligation, Liabilities Incurred		29
Asset Retirement Obligation, Revision of Estimate		$ 11

ASSET RETIREMENT OBLIGATIONS Asset Retirement Obligations - Assets (Details) $ in Millions	Dec. 31, 2012 USD ($)
Other ARO Assets
ARO Underlying Asset	$ 1

ASSET RETIREMENT OBLIGATIONS Asset Retirement Obligations - Schedule of Changes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Incurred					$ 8	$ 34
Settled			$ 17	$ 20
Successor
Beginning balance		$ 41
Incurred		1
Revisions		3
Settled		(5)
Accretion expense		2
Ending balance	$ 41	42
Predecessor
Beginning balance	41	$ 41	57	58
Incurred	0		1	29
Revisions	0		0	(11)
Settled	0		(17)	(20)
Accretion expense	0		0	1
Ending balance	$ 41		$ 41	$ 57	$ 58

Comprehensive Income (Loss) - Tax amounts in other comprehensive income (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Successor
Income taxes included in other comprehensive income:
Reclassification of unrealized loss on interest rate hedges into earnings		$ 0
Change in fair value of interest rate hedges		0
Actuarial loss relating to postretirement benefits		(6)
Reclassification of prior service credit relating to other postretirement benefits into earnings		0
Income tax benefit included in other comprehensive income		$ (6)
Predecessor
Income taxes included in other comprehensive income:
Reclassification of unrealized loss on interest rate hedges into earnings	$ 2		$ 9	$ 9
Change in fair value of interest rate hedges	0		(1)	(5)
Actuarial loss relating to postretirement benefits	0		(6)	0
Reclassification of prior service credit relating to other postretirement benefits into earnings	0		(1)	(1)
Income tax benefit included in other comprehensive income	$ 2		$ 1	$ 3

Comprehensive Income (Loss) - Components of AOCI (Details) - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Successor
Comprehensive Income Loss [Line Items]
Other postretirement plan - net actuarial loss and prior service costs, net	$ (9)
Interest rate hedges, net	0
Total accumulated other comprehensive loss, net of tax	$ (9)
Predecessor
Comprehensive Income Loss [Line Items]
Other postretirement plan - net actuarial loss and prior service costs, net		$ (13)
Interest rate hedges, net		(3)
Total accumulated other comprehensive loss, net of tax		$ (16)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e637-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e681-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 31
-Article 5

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 14, 17, 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Debt Obligations - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2012	Mar. 25, 2012	Feb. 29, 2012	Dec. 31, 2011
Debt Instrument
Long term debt, face amount			$ 455
Debt Instrument, Fair Value Disclosure	$ 1,810			$ 2,130
Long term debt, amount outstanding	1,760			$ 1,970
Term Loan Due August 2013
Debt Instrument
Long term debt, face amount	$ 250
Term Loan Due June 2012
Debt Instrument
Long term debt, face amount		$ 465
Long term debt, amount outstanding		$ 342
Term Loan Due March 2012
Debt Instrument
Long term debt, face amount			$ 455
Debt Covenant, Cross Default Feature, Minimum Amount	5
Revolver 2012
Debt Instrument
Debt, Weighted Average Interest Rate	1.84%

Debt Obligations - Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument
Total debt outstanding	$ 1,760	$ 1,970
6.05% Senior Notes due 2013
Debt Instrument
Debt Instrument, Interest Rate, Stated Percentage	6.05%
6.20% Senior Notes due 2017
Debt Instrument
Debt Instrument, Interest Rate, Stated Percentage	6.20%
8.125% Senior Notes due 2019
Debt Instrument
Debt Instrument, Interest Rate, Stated Percentage	8.125%
7.00% Senior Notes due 2029
Debt Instrument
Debt Instrument, Interest Rate, Stated Percentage	7.00%
7.00% Senior Notes due 2018
Debt Instrument
Debt Instrument, Interest Rate, Stated Percentage	7.00%
Successor
Debt Instrument
Net premiums on long-term debt	$ 0
Unamortized fair value adjustments	136
Total debt outstanding	1,757
Current portion of long-term debt	(258)
Total long-term debt	1,499
Successor \| 6.05% Senior Notes due 2013
Debt Instrument
Senior Notes	250
Successor \| 6.20% Senior Notes due 2017
Debt Instrument
Senior Notes	300
Successor \| 8.125% Senior Notes due 2019
Debt Instrument
Senior Notes	150
Successor \| 7.00% Senior Notes due 2029
Debt Instrument
Senior Notes	66
Successor \| 7.00% Senior Notes due 2018
Debt Instrument
Senior Notes	400
Successor \| Term Loans due 2012
Debt Instrument
Term Loans	0
Successor \| Term Loan due 2015
Debt Instrument
Term Loans	$ 455
Predecessor
Debt Instrument
Net premiums on long-term debt		3
Unamortized fair value adjustments		0
Total debt outstanding		1,966
Current portion of long-term debt		(342)
Total long-term debt		1,624
Predecessor \| 6.05% Senior Notes due 2013
Debt Instrument
Senior Notes		250
Predecessor \| 6.20% Senior Notes due 2017
Debt Instrument
Senior Notes		300
Predecessor \| 8.125% Senior Notes due 2019
Debt Instrument
Senior Notes		150
Predecessor \| 7.00% Senior Notes due 2029
Debt Instrument
Senior Notes		66
Predecessor \| 7.00% Senior Notes due 2018
Debt Instrument
Senior Notes		400
Predecessor \| Term Loans due 2012
Debt Instrument
Term Loans		797
Predecessor \| Term Loan due 2015
Debt Instrument
Term Loans		$ 0

DEBT OBLIGATIONS Debt Obligations - Future Maturities (Details) $ in Millions	Dec. 31, 2012 USD ($)
Debt Instrument
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	$ 250
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	455
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	300
Long-term Debt, Maturities, Repayments of Principal after Year Five	616
Long Term Debt Maturities Repayments Of Principal Total	$ 1,621

BENEFITS Benefits - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure
Defined Contribution Plan Employers Matching Contribution Percentage to Participants Percentage Conribution			100.00%
Pretax curtailment gain			$ 70
Noncurrent refund liability			59
Curtailment recognition (1)			$ 11
Defined Contribution Plan, Employer Matching Contribution, Percent			5.00%
Supplemental Employee Retirement Plans, Defined Benefit \| Successor
Defined Benefit Plan Disclosure
Defined Contribution Plan, Cost Recognized		$ 2
Supplemental Employee Retirement Plans, Defined Benefit \| Predecessor
Defined Benefit Plan Disclosure
Defined Contribution Plan, Cost Recognized	$ 1			$ 6	$ 5
Savings Plan \| Successor
Defined Benefit Plan Disclosure
Defined Contribution Plan, Cost Recognized		3
Savings Plan \| Predecessor
Defined Benefit Plan Disclosure
Defined Contribution Plan, Cost Recognized	1			5	$ 5
Pension Plans, Defined Benefit \| Successor
Defined Benefit Plan Disclosure
Curtailment recognition (1)		$ (75)
Pension Plans, Defined Benefit \| Predecessor
Defined Benefit Plan Disclosure
Curtailment recognition (1)	$ 0			$ 0

BENEFITS Benefits - Obligations and Funded Status (Details) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

12 Months Ended

Mar. 25, 2012

Dec. 31, 2012

Dec. 31, 2011

Benefit obligation at beginning of period

$ 243

Curtailments

$ 11

Benefit obligation at end of period

$ 243

Fair value of plan assets at beginning of period

155

Fair value of plan assets at end of period

155

$ 75

Pension Plans, Defined Benefit | Successor

Benefit obligation at beginning of period

Service cost

Interest cost

Amendments

Actuarial loss and other

Benefits paid, net

(1)

Curtailments

(75)

Benefit obligation at end of period

Fair value of plan assets at beginning of period

Return on plan assets and other

Employer contributions

Fair value of plan assets at end of period

Amount (overfunded) underfunded at end of period (1)

^[1]

(52)

Net actuarial loss

(1)

Prior service cost

Amounts recognized in accumulated other comprehensive income (pre-tax basis) consist of:

Pension Plans, Defined Benefit | Predecessor

Benefit obligation at beginning of period

Service cost

Interest cost

Amendments

Actuarial loss and other

Benefits paid, net

(1)

Curtailments

Benefit obligation at end of period

Fair value of plan assets at beginning of period

$ 82

$ 75

Return on plan assets and other

Employer contributions

Fair value of plan assets at end of period

Amount (overfunded) underfunded at end of period (1)

^[1]

Net actuarial loss

Prior service cost

Amounts recognized in accumulated other comprehensive income (pre-tax basis) consist of:

$ 0

$ 24

[1]	Underfunded balance is recognized as a non-current liability in the consolidated balance sheets. Overfunded balance is recognized as a non-current asset in the consolidated balance sheets.

Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

12 Months Ended

Mar. 25, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Defined Benefit Plan Disclosure

Curtailment recognition (1)

$ 11

Pretax curtailment gain

Noncurrent refund liability

$ 59

Successor

Defined Benefit Plan Disclosure

Service cost

$ 0

Interest cost

Expected return on plan assets

(3)

Prior service credit amortization

Curtailment recognition (1)

^[1]

(11)

Net periodic benefit cost

$ (13)

Predecessor

Defined Benefit Plan Disclosure

Service cost

$ 1

$ 2

$ 3

Interest cost

Expected return on plan assets

(1)

(3)

Prior service credit amortization

(1)

(2)

Curtailment recognition (1)

Net periodic benefit cost

$ 0

$ 1

$ 2

[1]

BENEFITS Benefits - Weighted-average Assumptions (Details)	3 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Postemployment Benefits [Abstract]
Discount rate	4.26%	3.64%	5.54%	6.00%
Tax exempt accounts	7.00%	7.00%	7.00%	7.00%
Taxable accounts	4.50%	4.50%	4.50%	5.00%

BENEFITS Benefits - Assumed Health Care Cost Trend Rates Used (Details)	3 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011
Postemployment Benefits [Abstract]
Health care cost trend rate assumed for next year	8.00%	8.50%	8.50%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	4.75%	4.50%	4.75%
Year that the rate reaches the ultimate trend rate	2019	2020	2019

BENEFITS Benefits - 1% Change in Assumed Health Care Cost Trend Rates Used (Details) $ in Millions	12 Months Ended
	Dec. 31, 2012 USD ($)
Postemployment Benefits [Abstract]
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation	$ 4
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation	$ (3)

BENEFITS Benefits - Fair Value of Assets by Category (Details) - USD ($) $ in Millions	Dec. 31, 2012	Mar. 25, 2012	Dec. 31, 2011
Defined Benefit Plan, Fair Value of Plan Assets	$ 90	$ 155	$ 75
Cash and Cash Equivalents
Defined Benefit Plan, Fair Value of Plan Assets	2		2
Mutual Fund
Defined Benefit Plan, Fair Value of Plan Assets	$ 88		$ 73

- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References + Details

BENEFITS Benefits - Estimate of Expected Benefit Payments (Details) $ in Millions	Dec. 31, 2012 USD ($)
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plan, Expected Future Benefit Payments in Year One	$ 3
Prescription Drug Subsidy Receipts, Year One	0
Defined Benefit Plan, Expected Future Benefit Payments in Year One, net	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Two	3
Prescription Drug Subsidy Receipts, Year Two	0
Defined Benefit Plan, Expected Future Benefit Payments in Year Two, net	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Three	3
Prescription Drug Subsidy Receipts, Year Three	0
Defined Benefit Plan, Expected Future Benefit Payments in Year Three, net	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Four	3
Prescription Drug Subsidy Receipts, Year Four	0
Defined Benefit Plan, Expected Future Benefit Payments in Year Four, net	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Five	3
Prescription Drug Subsidy Receipts, Year Five	0
Defined Benefit Plan, Expected Future Benefit Payments in Year Five, net	3
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter	12
Prescription Drug Subsidy Receipts, Five Fiscal Years Thereafter	2
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter, net	12
Other Postretirement Benefit Plans, Defined Benefit Net of Medical Subsidiary Receipts [Member]
Defined Benefit Plan, Expected Future Benefit Payments in Year One	3
Defined Benefit Plan, Expected Future Benefit Payments in Year One, net	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Two	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Two, net	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Three	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Three, net	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Four	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Four, net	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Five	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Five, net	3
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter	10
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter, net	$ 10

Taxes on Income - Current and Deferred (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Successor
Income Tax Disclosure
Federal		$ (8)
State		(2)
Current Income Tax Expense (Benefit)		(10)
Federal		72
State		14
Deferred income taxes		86
Total income tax expense		$ 76
Effective tax rate		46.4396%
Predecessor
Income Tax Disclosure
Federal	$ 5		$ 24	$ 34
State	1		(5)	11
Current Income Tax Expense (Benefit)	6		19	45
Federal	17		67	51
State	2		9	1
Deferred income taxes	19		76	52
Total income tax expense	$ 25		$ 95	$ 97
Effective tax rate	38.00%		36.00%	40.00%

TAXES ON INCOME Taxes on Income - Actual versus Statutory (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Successor
Computed statutory income tax expense at 35%		$ 57
Income Tax Reconciliation, Nondeductible Expense, Other		11
State income taxes, net of federal income tax benefit		8
Permanent differences and other		0
Total income tax expense		$ 76
Predecessor
Computed statutory income tax expense at 35%	$ 23		$ 92	$ 86
Income Tax Reconciliation, Nondeductible Expense, Other	0		0	0
State income taxes, net of federal income tax benefit	2		3	8
Permanent differences and other	0		0	3
Total income tax expense	$ 25		$ 95	$ 97

TAXES ON INCOME Taxes on Income - Unrecognized Tax Benefits (Details) $ in Millions	Dec. 31, 2012 USD ($)
Schedule of Unrecognized Tax Benefits Rollforward
Unrecognized tax benfits for state filing positions, net of federal tax	$ 1

TAXES ON INCOME Income Taxes - Effective Rate Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Successor
Schedule of Effective Income Tax Rate Reconciliation
Computed statutory income tax expense at 35%		$ 57
Income Tax Reconciliation, Nondeductible Expense, Other		11
State income taxes, net of federal income tax benefit		8
Income Tax Reconciliation, Other Adjustments		0
Total income tax expense		$ 76
Predecessor
Schedule of Effective Income Tax Rate Reconciliation
Computed statutory income tax expense at 35%	$ 23		$ 92	$ 86
Income Tax Reconciliation, Nondeductible Expense, Other	0		0	0
State income taxes, net of federal income tax benefit	2		3	8
Income Tax Reconciliation, Other Adjustments	0		0	3
Total income tax expense	$ 25		$ 95	$ 97

TAXES ON INCOME Taxes on Income - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Successor
Other postretirement benefits	$ 52
Derivative financial instruments (interest rates)	13
Other	18
Total deferred income tax assets	83
Property, plant and equipment	(925)
Other	(2)
Total deferred income tax liabilities	(927)
Net deferred income tax liability	(844)
Less current income tax assets	9
Accumulated deferred income taxes	$ (853)
Predecessor
Other postretirement benefits		$ 13
Derivative financial instruments (interest rates)		4
Other		20
Total deferred income tax assets		37
Property, plant and equipment		(559)
Other		(7)
Total deferred income tax liabilities		(566)
Net deferred income tax liability		(529)
Less current income tax assets		9
Accumulated deferred income taxes		$ (538)

TAXES ON INCOME Taxes on Income - Narrative (Details) $ in Millions	Dec. 31, 2012 USD ($)
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits	$ 1
Unrecognized tax benfits for state filing positions, net of federal tax	$ 1

Derivative Insturments and Hedging (Narrative) (Details) $ in Millions	Feb. 29, 2012 USD ($)
Derivative [Line Items]
Interest rate swaps, notional amount	$ 455
Long term debt, face amount	$ 455

Derivative Instruments and Hedging Assets / Liabilities (Details) - Other current liabilities - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Successor
Derivatives, Fair Value [Line Items]
Interest rate contracts	$ 0
Predecessor
Derivatives, Fair Value [Line Items]
Interest rate contracts		$ 4

Derivative Instrument and Hedging Activities (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Successor
Derivative [Line Items]
Change in fair value – increase in accumulated other comprehensive income		$ 0
Reclassification of unrealized loss from accumulated other comprehensive income – increase of interest expense		$ 0
Predecessor
Derivative [Line Items]
Change in fair value – increase in accumulated other comprehensive income	$ 0		$ 1	$ 13
Reclassification of unrealized loss from accumulated other comprehensive income – increase of interest expense	$ 4		$ 22	$ 22

- Definition

Net of tax amount, before reclassification adjustments, of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669646-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e637-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 17, 20
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 121
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 46
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 24
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

FAIR VALUE MEASUREMENT Narrative (Details) $ in Millions	Dec. 31, 2011 USD ($)
Fair Value Disclosures [Abstract]
Interest Rate Derivative Liabilities, at Fair Value	$ 4

PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment - PPE Type (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Successor
Property, Plant and Equipment [Line Items]
Construction work in progress	$ 45
Total property, plant and equipment	4,121
Accumulated depreciation and amortization	(57)
Net property, plant and equipment	(4,064)
Successor \| Transmission
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	2,580
Successor \| Gathering
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	114
Successor \| Underground storage
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	306
Successor \| General plant - LNG
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	966
Successor \| General plant - other
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	110
Successor \| Plant in service
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	4,076
Successor \| Construction work in progress
Property, Plant and Equipment [Line Items]
Construction work in progress	$ 45
Predecessor
Property, Plant and Equipment [Line Items]
Construction work in progress		$ 42
Total property, plant and equipment		4,088
Accumulated depreciation and amortization		(733)
Net property, plant and equipment		(3,355)
Predecessor \| Transmission
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment		2,321
Predecessor \| Gathering
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment		108
Predecessor \| Underground storage
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment		322
Predecessor \| General plant - LNG
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment		1,119
Predecessor \| General plant - other
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment		176
Predecessor \| Plant in service
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment		4,046
Predecessor \| Construction work in progress
Property, Plant and Equipment [Line Items]
Construction work in progress		$ 42
Minimum \| Transmission
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P5Y0M
Minimum \| Underground storage
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P5Y0M
Minimum \| General plant - LNG
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P5Y0M
Minimum \| General plant - other
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P3Y0M
Maximum \| Transmission
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P46Y0M
Maximum \| Gathering
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P26Y0M
Maximum \| Underground storage
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P46Y0M
Maximum \| General plant - LNG
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P40Y0M
Maximum \| General plant - other
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P40Y0M

PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Capitalized Computer Software, Net	$ 34
Capitalized Computer Software, Accumulated Amortization	51
Capitalized Computer Software, Amortization	7	$ 7
Contributions in Aid of Construction	49
Finite-Lived Intangible Assets, Accumulated Amortization	5
Depreciation, Depletion and Amortization	$ 2	$ 2

PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2012
Transmission \| Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P5Y0M
Transmission \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P46Y0M
Gathering \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P26Y0M
Underground storage \| Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P5Y0M
Underground storage \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P46Y0M
General plant - LNG \| Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P5Y0M
General plant - LNG \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P40Y0M
General plant and other \| Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P3Y0M
General plant and other \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	P40Y0M

SHARE-BASED COMPENSATION Share-Based Compensation - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee	500,000
Exercise price for a stock option, minimum	100.00%
Options and SARS Fair Value of Vested		$ 4
Compensation expense for affiliate equity awards.		1	$ 1
Aggregate intrinsic value of total options and SARs outstanding		16
Aggregate intrinsic value of total options and SARs exercisable		13
Aggregate intrinsic value of total options and SARs exercised		1
Restricted Stock and RSU Fair Value Released		4
Restricted Stock or Unit Expense		4	2
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Total Share-based Liabilities Paid		$ 4	$ 2

SHARE-BASED COMPENSATION Stock-Based Compensation - SARs (Details) - $ / shares	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding	616,803	556,803
Sars Outstanding Weighted Average Exercise Price	$ 20.71	$ 19.08
Granted		138,181
SARS Granted Weighted Average Exercise Price		$ 24.54
Exercised	(27,389)	(49,366)
Sars Exercised Weighted Average Exercise Price	$ 15.87	$ 12.55
Forfeitures	(30,512)	(28,815)
Sars Forfeited Weighted Average Exercise Price	$ 27.41	$ 19.35
Outstanding	558,902	616,803
Sars Outstanding Weighted Average Exercise Price	$ 20.58	$ 20.71
SARs Exercisable	423,815	308,799
SARs Exercisable Weighted Average Exercise Price	$ 19.61	$ 20.90

SHARE-BASED COMPENSATION Stock-Based Compensation - Stock Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding	203,903	263,059
Weighted Average Exercise Price	$ 20.27	$ 20.42
Exercised	(38,596)	(59,156)
Outstanding	165,307	203,903
Weighted Average Exercise Price	$ 20.90	$ 20.27
Exercisable	165,307	203,903
Weighted Average Exercise Price Exercisable	$ 20.90	$ 20.27
ShareBasedCompensationArrangementByShareBasedPayment Award Excercises in Period Weighted Average Excercise Price	$ 17.56	$ 20.92

SHARE-BASED COMPENSATION Stock-Based Compensation - Stock Options Valuation Assumptions (Details)	12 Months Ended
	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected Volatility Rate, Minimum	32.79%
Expected Volatility Rate, Maximum	32.82%
Expected Dividend Yield, Minimum	2.47%
Expected Dividend Yield, Maximum	2.47%
Risk Free Interest Rate, Minimum	2.28%
Risk Free Interest Rate, Maximum	2.40%
Expected Life, Maximum	6 years

SHARE-BASED COMPENSATION Stock-Based Compensation - Restricted Liability Units (Details) - $ / shares	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units Oustanding	165,870	206,120
Restricted Stock Units Outstanding Weighted Average Grant Date Fair Value	$ 20.68	$ 18.53
Restricted Stock Units Granted	51,611	70,110
Restricted Stock Units Granted Weighted Average Grant Date Fair Value	$ 42.08	$ 24.57
Restricted Stock Units Released	(87,509)	(101,420)
Restricted Stock Units Released Weighted Average Grant Date Fair Value	$ 18.47	$ 19.27
Restricted Stock Units Forfeited	(4,918)	(8,940)
Restricted Stock Units Forfeited Weighted Average Grant Date Fair Value	$ 18.97	$ 18.49
Restricted Stock Units Oustanding	125,054	165,870
Restricted Stock Units Outstanding Weighted Average Grant Date Fair Value	$ 31.15	$ 20.68

Commitment and Contingenices (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2012	Mar. 25, 2012	Dec. 31, 2011
Loss Contingencies [Line Items]
Estimated litigation liability	$ 6		$ 1
Aggregate amount of projected benefit obligations of pension plans		$ 243
Estimated fair value of all assets of pension plans	$ 90	$ 155	$ 75

- Definition

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Projected Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6522206

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accumulated Postretirement Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6503904

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 6
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph E1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

+ References + Details

Commitments and Contingencies - Accrued Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Successor
Loss Contingencies [Line Items]
Current	$ 1
Non-current	5
Total environmental liabilities	$ 6
Predecessor
Loss Contingencies [Line Items]
Current		$ 3
Non-current		4
Total environmental liabilities		$ 7

- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6911-107765

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 10
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Section A
-Paragraph 8
-Chapter 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 96-1
-Paragraph 161, 163
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

+ Details

QUARTERLY OPERATIONS Quarterly Operations (Details) - USD ($) $ in Millions		3 Months Ended								9 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 25, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Predecessor
Operating revenues					$ 194	$ 219	$ 193	$ 190	$ 202		$ 804	$ 769
Operating income					88	101	82	88	91		362	339
Net income					$ 40	$ 47	$ 35	$ 40	$ 46		$ 168	$ 148
Successor
Operating revenues	$ 13	$ 205	$ 189	$ 185						$ 592
Operating income	(26)	89	77	65						205
Net income	$ (19)	$ 40	$ 37	$ 30						$ 88

- Definition

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

+ References

+ Details

Label	Element	Value
Other Postretirement Benefit Plans, Defined Benefit [Member]
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Arising During Period, before Tax	us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	$ 1,000,000
Fixed Income Securities	pepl_FixedIncomeSecurities	53.00%
Cash Fund Investments	pepl_CashFundInvestments	10.00%
Other Investments - Plan Asset Allocation	pepl_OtherInvestmentsPlanAssetAllocation	7.00%
Large Cap US Equitiies	pepl_LargeCapUsEquitiies	17.00%
International Equities	pepl_InternationalEquities	10.00%
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	us-gaap_DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYear	$ 8,000,000
Small Cap US Equities	pepl_SmallCapUsEquities	3.00%
Other Postretirement Benefit Plans, Defined Benefit [Member] \| Successor [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	3.51%
Other Postretirement Benefit Plans, Defined Benefit [Member] \| Predecessor [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	4.26%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	4.24%
Supplemental Employee Retirement Plans, Defined Benefit [Member]
Company Contributions Vested	pepl_CompanyContributionsVested	100.00%
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Target Allocation Percentage, Cash Maximum	pepl_DefinedBenefitPlanTargetAllocationPercentageCashMaximum	10.00%
Fixed Income Securities	pepl_FixedIncomeSecurities	55.00%
Cash Fund Investments	pepl_CashFundInvestments	8.00%
Other Investments - Plan Asset Allocation	pepl_OtherInvestmentsPlanAssetAllocation	6.00%
Large Cap US Equitiies	pepl_LargeCapUsEquitiies	19.00%
International Equities	pepl_InternationalEquities	10.00%
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	us-gaap_DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYear	$ 8,000,000
Small Cap US Equities	pepl_SmallCapUsEquities	2.00%
Savings Plan [Member]
Company Contributions Vested	pepl_CompanyContributionsVested	100.00%
Company Contributions Years	pepl_CompanyContributionsYears	five
Supplemental Employee Retirement Plans, Defined Benefit [Member] \| Missouri Gas Energy [Member]
Company Contributions Years	pepl_CompanyContributionsYears	five
Fixed Income Securities [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum	65.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum	75.00%
Equity Securities [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum	25.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum	35.00%