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Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Statement [Abstract]      
Change in value of cash flow hedges, tax expense (benefit) $ (5) $ (2) $ 11
Unrealized loss on subsidiary pension, tax 0 9 (3)
Translation income (loss), tax $ (1) $ 33 $ 17