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Derivatives and Net Investment Hedge - Summary of Net Gains (Losses) on Derivatives Designated as Cash Flow Hedging Instruments (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Net (losses) gains recognized in OCI, net of tax	$ (2)	$ (59)	$ (28)	$ (27)
Cash Flow Hedging [Member] | Foreign Exchange Forward Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net (losses) gains recognized in OCI, net of tax	0	(7)	(4)	1
Net gains (losses) reclassified from accumulated OCI into cost of revenues	0	3	4	5
Cash Flow Hedging [Member] | Interest Rate Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net (losses) gains recognized in OCI, net of tax	(2)	(52)	(24)	(28)
Net gains (losses) reclassified from accumulated OCI into interest expense	$ 5	$ 16	$ 17	$ 49

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