CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (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]
Net income (loss)	$ (39)	$ 36	$ 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	1	0	3
Reclassification of unrealized gain on commodity hedges into earnings	0	0	(1)
Reclassificcation of net actuarial loss and prior service credit relating to pension and other postretirement benefits into earnings	0	0	1
Other comprehensive income (loss), net of tax	1	0	12
Comprehensive income (loss)	$ (38)	$ 36	$ 62