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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Predecessor
NET INCOME $ 77 $ 211
OTHER COMPREHENSIVE INCOME:    
Defined benefit pension and post-retirement plans, net of $_ and $4 tax   7
COMPREHENSIVE INCOME $ 77 $ 218