Derivatives - Schedule of Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Fair value of derivatives, asset	$ 24	$ 13
Fair value of derivatives, liability	48	18
Derivatives designated as effective hedges | Cash flow hedges | Foreign currency contracts
Derivatives, Fair Value [Line Items]
Fair value of derivatives, asset	5	1
Fair value of derivatives, liability	2	13
Derivatives designated as effective hedges | Fair value hedges | Interest rate swaps
Derivatives, Fair Value [Line Items]
Fair value of derivatives, asset	7	2
Fair value of derivatives, liability	0	1
Derivatives designated as effective hedges | Net investment hedge | Cross-currency swaps
Derivatives, Fair Value [Line Items]
Fair value of derivatives, asset	0	0
Fair value of derivatives, liability	43	0
Derivatives not designated as effective hedges
Derivatives, Fair Value [Line Items]
Fair value of derivatives, asset	12	10
Fair value of derivatives, liability	$ 3	$ 4