Derivative Instrument and Hedging Activities (Tables)

9 Months Ended

Sep. 30, 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 unaudited interim condensed consolidated balance sheets at the dates indicated:

	Fair Value
	Asset Derivatives				Liability Derivatives
	Successor		Predecessor		Successor		Predecessor
Balance Sheet Location	September 30, 2012		December 31, 2011		September 30, 2012		December 31, 2011
Cash Flow Hedges:
Interest rate contracts:
Derivative instruments — liabilities	$	—	$	—	$	—	$	19,936
Deferred credits	—		—		—		59,789
Commodity contracts — Gathering and Processing:
Natural gas price swaps
Prepayments and other assets	1,498		6,124		—		—
Accounts payable — related parties	—		—		7,135		—
NGL price swaps
Prepayments and other assets	4,323		—		—		1,996
Derivative instruments — liabilities	—		—		—		4,144
	$	5,821	$	6,124	$	7,135	$	85,865
Economic Hedges:
Interest rate contracts:
Derivative instruments — liabilities	$	—	$	—	$	17,310	$	—
Deferred credits	—		—		63,142		—
Commodity contracts — Gathering and Processing:
Other derivative instruments
Derivative instruments — liabilities	—		—		—		50
Commodity contracts — Distribution:
Natural gas price swaps
Other non-current assets	768		—		—		—
Derivative instruments — liabilities	—		—		7,958		34,468
Deferred credits	—		3		—		5,643
	$	768	$	3	$	88,410	$	40,161
Total	$	6,589	$	6,127	$	95,545	$	126,026

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 unaudited interim condensed consolidated balance sheet 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 unaudited interim condensed consolidated financial statements for the periods presented:

	Successor			Predecessor
	Three months ended September 30, 2012			Three months ended September 30, 2011
Cash Flow Hedges:
Interest rate contracts:
Change in fair value - increase in accumulated other comprehensive income	$	—		$	50,283
Reclassification of unrealized loss from accumulated other comprehensive income - increase of interest expense	—			5,715
Commodity contracts - Gathering and Processing:
Change in fair value - increase/(decrease) in accumulated other comprehensive income	(5,526		)	8,434
Reclassification of unrealized gain from accumulated other comprehensive income - increase of operating revenues	6,011			5,598
Economic Hedges:
Interest rate contracts:
Change in fair value - increase ininterest expense	(4,294		)	—
Commodity contracts - Gathering and Processing:
Change in fair value of hedges - decrease in operating revenues	—			3,963
Commodity contracts - Distribution:
Change in fair value - increase/(decrease) in deferred natural gas purchases	(10,866		)	10,114

	Successor			Predecessor
	Period from Acquisition (March 26, 2012) to September 30, 2012			Period from January 1, 2012 to March 25, 2012			Nine months ended September 30, 2011
Cash Flow Hedges:
Interest rate contracts:
Change in fair value - increase in accumulated other comprehensive income	$	—		$	6,174		$	71,031
Reclassification of unrealized loss from accumulated other comprehensive income - increase of interest expense	—			8,085			16,881
Commodity contracts - Gathering and Processing:
Change in fair value - increase in accumulated other comprehensive income	5,851			4,619			7,420
Reclassification of unrealized gain from accumulated other comprehensive income	11,547			2,043			14,782
Economic Hedges:
Interest rate contracts:
Change in fair value - increase in interest expense	15,415			—			—
Commodity contracts - Gathering and Processing:
Change in fair value of other hedges - decrease in operating revenues	—			50			27,611
Commodity contracts - Distribution:
Change in fair value - decrease in deferred natural gas purchases	(30,961		)	(1,957		)	(13,658		)