Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2012 Successor	Mar. 25, 2012 Predecessor	Sep. 30, 2011 Predecessor
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 47,388	$ 40,482	$ 121,256
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	85,501	30,225	96,118
Deferred income taxes	44,678	18,958	76,682
Amortization of costs charged to interest	(16,089)	384	1,101
Net gain on curtailment of OPEB benefits	(10,527)	0	0
Changes in operating assets and liabilities, net of Merger impact	(54,612)	21,518	10,190
Net cash flows provided by operating activities	96,339	111,567	305,347
CASH FLOWS FROM INVESTING ACTIVITIES:
Net (increase) decrease in note receivable - related parties	3,400	254,736	(209,900)
Net increase (decrease) in income taxes payable - related parties	(35,257)	5,158	(11,277)
Additions to property, plant and equipment	(62,390)	(27,588)	(83,703)
Plant retirements and other	(2,875)	345	(1,202)
Net cash flows provided by (used in) investing activities	(97,122)	232,651	(306,082)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of long-term debt	0	455,000	0
Repayment of debt	0	(797,386)	0
Issuance costs of debt	0	(1,803)	0
Other	760	0	729
Net cash flows provided by (used in) financing activities	760	(344,189)	729
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(23)	29	(6)
CASH AND CASH EQUIVALENTS, beginning of period	79	50	56
CASH AND CASH EQUIVALENTS, end of period	$ 56	$ 79	$ 50