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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of Comprehensive Income [Abstract]      
Foreign currency translation adjustments, tax expense (benefit) $ (4) $ (18) $ 34
Hedging activities, tax expense (benefit) 22 40 (194)
Pension and post-employment benefits, tax expense (benefit) (323) 35 (94)
Marketable security activities, tax expense (benefit) 0 0 (8)
Hedging activities, tax expense (benefit) $ 70 $ 23 $ (26)