CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended	9 Months Ended	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2012 Successor [Member]	Sep. 30, 2013 Successor [Member]	Mar. 25, 2012 Predecessor [Member]
Net income (loss)	$ 58	$ 17	$ (10)	$ 134	$ 50
Other comprehensive income (loss), net of tax:
Change in fair value of interest rate hedges			0	0	4
Reclassification of unrealized loss on interest rate hedges into earnings			0	0	5
Change in fair value of commodity hedges	0	(3)	4	(3)	3
Reclassification of unrealized gain on commodity hedges into earnings	0	(4)	(7)	0	(1)
Actuarial gain relating to pension and other postretirement benefits	8	0	0	10	1
Other comprehensive income (loss), net of tax	8	(7)	(3)	7	12
Comprehensive income (loss)	$ 66	$ 10	$ (13)	$ 141	$ 62