CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (USD $) In Millions, unless otherwise specified	9 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Mar. 31, 2011 Predecessor	Dec. 31, 2010 Predecessor	Dec. 31, 2009 Predecessor
NET INCOME (LOSS)	$ 19	$ 211	$ (55)	$ 662
OTHER COMPREHENSIVE (LOSS) INCOME:
Defined benefit pension and post-retirement plans, net of $278, $4, $121 and $56 tax	(446)	7	115	(11)
Loss on interest rate cash flow hedges, net of reclassifications to net income, net of $-, $-, $1 and $4 tax			(1)	7
Auction rate securities marked to market, net of $-, $-, $1 and $1 tax			(1)	2
Other comprehensive (loss) income	(446)	7	113	(2)
COMPREHENSIVE (LOSS) INCOME	$ (427)	$ 218	$ 58	$ 660