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Condensed Consolidated Statements of Changes in Equity (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Statement Of Stockholders Equity [Abstract]    
Currency translation adjustments, tax $ (3) $ (3)
Cash flow hedges, tax (3) 12
Unrealized gain on pension liability, tax (1) $ (1)
Other comprehensive income gain/(loss) on disposition, tax $ (42)  
Dividends to shareholders, per share of common stock $ 0.06 $ 0.06