CONSOLIDATED STATEMENTS OF CASH FLOWS (Segment, Continuing Operations [Member], USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended
	Mar. 31, 2012 Successor [Member]	Mar. 31, 2013 Successor [Member]	Mar. 25, 2012 Predecessor [Member]
Cash flows from operating activities:
Net income (loss)	$ (39)	$ 36	$ 50
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization (indcluding discontinued operations)	5	59	57
Deferred Income Taxes	(12)	22	23
Provision for bad debts	0	1	1
Amortization of costs charged to interest	0	(8)	1
Net gain on curtailment of OPEB plans	(15)	0	0
Unrealized gain on derivatives	0	(5)	0
Share-based compensation expense	0	2	2
Earnings from unconsolidated investments, net of cash distributions	0	0	(16)
Changes in operating assets and liabilities, net of Merger impact	(133)	131	79
Net cash flows provided by (used in) operating activities	(194)	238	197
Cash flows from investing activities:
Additions to property, plant and equipment	(2)	(123)	(60)
Loan repayment from unconsolidated investments	0	0	37
Distributions from unconsolidated affiliates in excess of cumulative earnings	0	1	0
Proceeds from Citrus Merger	0	0	1,895
Plant retirements and other	0	(1)	(2)
Net cash flows provided by (used in) investing activities	(2)	(123)	1,870
Cash flows from financing activities:
Issuance of long-term debt	0	0	455
Dividends paid on common stock	0	(30)	(19)
Note payable - related party	221	0	0
Repayment of long-term debt	0	0	(1,048)
Net change in revolving credit facilities	(47)	30	12
Purchase of treasury stock	0	0	(1,453)
Other	(2)	1	(1)
Net cash flows provided by (used in) financing activities	172	1	(2,054)
Change in cash and cash equivalents	(24)	116	13
Cash and cash equivalents at beginning of period	37	49	24
Cash and cash equivalents at end of period	$ 13	$ 165	$ 37