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Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Statement of Comprehensive Income [Abstract]        
Foreign currency translation, tax (expense)/benefit $ 22 $ (22) $ 21 $ (19)
Derivative financial instruments:        
Gains (losses) deferred, tax (expense)/benefit 14 (20) 4 (14)
(Gains) losses reclassified to earnings, tax expense/(benefit) $ (14) $ 22 $ (9) $ 25