Derivative Instrument and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2013

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 March 31, 2013.

	Fair Value
	Asset Derivatives				Liability Derivatives
Balance Sheet Location	March 31, 2013		December 31, 2012		March 31, 2013		December 31, 2012
Cash Flow Hedges:
Commodity contracts — Gathering and Processing:
Natural gas price swaps:
Accounts payable to related companies	$	—	$	—	$	3	$	5
	—		—		3		5
Economic Hedges:
Interest rate contracts:
Derivative instruments — liabilities	—		—		18		18
Deferred credits	—		—		54		59
Commodity contracts — Distribution:
Natural gas price swaps:
Current assets held for sale	8		1		—		—
Non-current assets held for sale	—		1		—		—
Current liabilities held for sale	—		—		2		9
	8		2		74		86
Total	$	8	$	2	$	77	$	91

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
	Three Months Ended March 31, 2013			Period from Acquisition (March 26, 2012) to March 31, 2012		Period from January 1, 2012 to March 25, 2012
Cash Flow Hedges:
Interest rate contracts:
Change in fair value — increase in accumulated other comprehensive income	$	—		$	—	$	6
Reclassification of unrealized loss from accumulated other comprehensive income — increase of interest expense	—			—		8
Commodity contracts — Gathering and Processing:
Change in fair value — increase in accumulated other comprehensive income	—			2		5
Reclassification of unrealized gain from accumulated other comprehensive income	—			—		2
Economic Hedges:
Interest rate contracts:
Change in fair value — increase in interest expense	5			—		—
Commodity contracts — Distribution:
Change in fair value — decrease in deferred natural gas purchases	(13		)	—		(2		)