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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Statement of Comprehensive Income [Abstract]        
Change in net actuarial loss, net $ (2) $ (8) $ (6) $ (25)
Change in net prior service credit, tax (2) 0 (7) (1)
Foreign currency translation adjustment and other, tax $ 0 $ 0 $ 0 $ 0