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Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Statement of Comprehensive Income [Abstract]        
Currency translation adjustments, tax $ (4) $ 2 $ 13 $ (6)
Pension and other postretirement benefits, tax 3 1 11 7
Hedging activities, tax $ 2 $ 1 $ 5 $ (38)