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Derivative Instruments And Hedging Activities - Summary of Net Gain (Loss) on Interest Rate Swaps Designated in Fair Value Hedge (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]
Interest expense, net	$ (58)	$ (60)	$ (180)	$ (185)
Designated as Hedging Instrument | Interest Rate Swap | Net interest settlements and accruals on interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Net interest settlements and accruals on interest rate swaps	(15)	(25)	(48)	(74)
Designated as Hedging Instrument | Interest Rate Swap | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Fair value changes on interest rate swaps	13	79	75	57
Fair value changes on hedged debt	$ (13)	$ (79)	$ (75)	$ (57)

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