CONDENSED CONSOLIDATED BALANCE SHEET (UNAUDITED) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012 Successor [Member]	Dec. 31, 2011 Predecessor [Member]
Current assets
Cash and cash equivalents	$ 12,726	$ 23,640
Accounts receivable, net of allowances of nil and $2,325, respectively	232,438	270,741
Accounts receivable - affiliates	30,951	10,467
Inventories	163,229	204,235
Deferred natural gas purchases	39,985	50,716
Natural gas imbalances - receivable	48,512	54,549
Prepayments and other assets	44,102	42,675
Total current assets	571,943	657,023
Property, plant and equipment
Plant in service	6,968,175	7,195,747
Construction work in progress	155,578	103,862
Property, Plant and Equipment, Gross	7,123,753	7,299,609
Less accumulated depreciation and amortization	(4,858)	(1,573,273)
Net property, plant and equipment	7,118,895	5,726,336
Deferred charges
Regulatory assets	136,280	57,447
Deferred charges	67,551	60,407
Total deferred charges	203,831	117,854
Unconsolidated investments	127,787	1,633,289
Goodwill	1,955,691	89,227
Other	65,877	47,130
Total assets	10,044,024	8,270,859
Stockholders equity
Common stock, $0.01 and $1 par value; 1 and 200,000 shares authorized; 1 and 126,142 shares issued, respectively	0	126,142
Premium on capital stock	3,912,867	1,934,102
Less treasury stock: nil and 1,298 shares, respectively, at cost	0	(33,228)
Less common stock held in trust: nil and 581 shares, respectively	0	(10,888)
Deferred compensation plans	0	10,888
Accumulated other comprehensive income (loss)	1,143	(119,192)
Retained earnings (deficit)	(38,507)	731,787
Total stockholders' equity	3,875,503	2,639,611
Long-term debt obligations	3,119,739	3,160,372
Total capitalization	6,995,242	5,799,983
Current liabilities
Current portion of long-term debt	860	343,254
Notes payable	165,000	200,000
Notes payable - related party	221,217	0
Accounts payable and accrued liabilities	126,786	193,949
Accounts payable and accrued liabilities - related parties	15,262	178
Federal, state and local taxes payable	37,882	37,127
Accrued interest	41,427	33,837
Natural gas imbalances - payable	116,048	145,212
Derivative instruments	51,090	58,598
Other	183,680	112,135
Total current liabilities	959,252	1,124,290
Deferred credits	329,546	301,709
Accumulated deferred income taxes	1,759,984	1,044,877
Commitments and contingencies
Total stockholders' equity and liabilities	$ 10,044,024	$ 8,270,859