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Derivatives - Schedule of Fair Value of Derivative Financial Instruments (Detail) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Derivatives, Fair Value [Line Items]    
Fair value of derivatives, liability $ (60) $ (110)
Derivatives designated as effective hedges | Cash flow hedges | Foreign currency contracts    
Derivatives, Fair Value [Line Items]    
Fair value of derivatives, asset 3 1
Fair value of derivatives, liability (8) (19)
Derivatives designated as effective hedges | Fair value hedges | Interest rate swaps    
Derivatives, Fair Value [Line Items]    
Fair value of derivatives, asset 5 7
Derivatives designated as effective hedges | Net investment hedges | Cross-currency swaps    
Derivatives, Fair Value [Line Items]    
Fair value of derivatives, asset 11 10
Fair value of derivatives, liability (74) (102)
Derivatives not designated as effective hedges | Foreign currency contracts    
Derivatives, Fair Value [Line Items]    
Fair value of derivatives, asset 9 10
Fair value of derivatives, liability $ (6) $ (17)