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Condensed Consolidated Statements of Changes in Equity (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Statement Of Stockholders Equity [Abstract]        
Currency translation adjustments, tax $ 0 $ 5 $ (1) $ 5
Cash flow hedges, tax (1) (2) (6) 10
Unrealized gain on pension liability, tax $ 0 $ (1) (2) $ (3)
Other comprehensive income gain/(loss) on disposition, tax     $ (42)  
Dividends to shareholders, per share of common stock $ 0.06 $ 0.06 $ 0.06 $ 0.06