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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		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense, net	$ (61)	$ (63)	$ (122)	$ (125)
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)	(24)	(33)	(49)
Designated as Hedging Instrument | Interest Rate Swap | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Fair value changes on interest rate swaps	25	7	62	(22)
Fair value changes on hedged debt	$ (25)	$ (7)	$ (62)	$ 22

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