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

The following table summarizes the fair value amounts of the Company’s asset and liability derivative instruments and their location reported in the consolidated balance sheets at the dates indicated. The asset and liability derivative instruments belonging to the Distribution segment have been included in current asset and liabilities held for sale at December 31, 2012.

	Fair Value
	Asset Derivatives				Liability Derivatives
	Successor		Predecessor		Successor		Predecessor
Balance Sheet Location	December 31, 2012		December 31, 2011		December 31, 2012		December 31, 2011
Cash Flow Hedges:
Interest rate contracts
Derivative instruments — liabilities	$	—	$	—	$	—	$	20
Deferred credits	—		—		—		60
Commodity contracts — Gathering and Processing:
Natural gas price swaps
Prepayments and other assets	—		6		—		—
Accounts payable to related companies	—		—		5		—
NGL price swaps
Prepayments and other assets	—		—		—		2
Derivative instruments — liabilities	—		—		—		4
	—		6		5		86
Economic Hedges:
Interest rate contracts
Derivative instruments — liabilities	—		—		18		—
Deferred credits	—		—		59		—
Commodity contracts — Distribution:
Natural gas price swaps
Non-current assets held for sale	1		—		—		—
Current liabilities held for sale	—		—		8		—
Derivative instruments — liabilities	—		—		—		35
Deferred credits	—		—		—		6
	1		—		85		41
Total	$	1	$	6	$	90	$	127

The Company has master netting arrangements with certain of its counterparties, which permit applicable obligations of the parties to be settled on a net versus gross basis.  If a right of offset exists, the fair value amounts for the derivative instruments are reported in the consolidated balance sheets on a net basis and disclosed herein on a gross basis.

Derivatives Effect On Income Table

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,
							2011			2010
Cash Flow Hedges:
Interest rate contracts:
Change in fair value - increase in accumulated other comprehensive income	$	—		$	6		$	74		$	13
Reclassification of unrealized loss from accumulated other comprehensive income - increase of interest expense	—			8			22			22
Commodity contracts - Gathering and Processing:
Change in fair value - increase (decrease) in accumulated other comprehensive income	(6		)	5			(7		)	(39		)
Reclassification of unrealized gain from accumulated other comprehensive income	1			2			24			19
Economic Hedges:
Interest rate contracts:
Change in fair value - increase in interest expense	12			—			—			—
Commodity contracts - Gathering and Processing:
Change in fair value of other hedges - decrease in operating revenues	—			—			30			31
Commodity contracts - Distribution:
Change in fair value - increase (decrease) in deferred natural gas purchases	(32		)	(2		)	3			(6		)