Financial Instruments - Derivative Instruments Measured at Fair Value (Detail) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 19	$ 18
Fair value of derivative liabilities	225	241
Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	1	17
Fair value of derivative liabilities	41	3
Cross currency swaps
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	18	1
Fair value of derivative liabilities	184	238
Fair Value of Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	18	1
Fair value of derivative liabilities	184	238
Fair Value of Derivatives Designated as Hedging Instruments \| Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0	0
Fair value of derivative liabilities	0	0
Fair Value of Derivatives Designated as Hedging Instruments \| Cross currency swaps
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	18	1
Fair value of derivative liabilities	184	238
Fair Value of Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	1	17
Fair value of derivative liabilities	41	3
Fair Value of Derivatives Not Designated as Hedging Instruments \| Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	1	17
Fair value of derivative liabilities	41	3
Fair Value of Derivatives Not Designated as Hedging Instruments \| Cross currency swaps
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0	0
Fair value of derivative liabilities	$ 0	$ 0