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Derivatives and Net Investment Hedges - Summary of Net (Losses) Gains on Derivatives Designated as Cash Flow Hedging Instruments (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net (losses) gains recognized in OCI, net of tax | $ 2 | $ (9) | $ 7 | $ (25)
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 | (3) | (0) | (4)
Net gains (losses) reclassified from accumulated OCI into cost of revenues | 0 | 2 | 0 | 4
Cash Flow Hedging [Member] | Interest Rate Hedges [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net (losses) gains recognized in OCI, net of tax | 2 | (6) | 7 | (21)
Net gains (losses) reclassified from accumulated OCI into interest expense | $ 1 | $ 5 | $ 0 | $ 12

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