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Amount of liability hedged in fair value hedging relationship.

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Fair Value Measurements and Financial Instruments - Additional Information (Detail) € in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Apr. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2026 USD ($)	Mar. 31, 2025 EUR (€)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 EUR (€)	Mar. 31, 2022 USD ($)
Derivatives, Fair Value [Line Items]
Carrying amount of our investments without readily determinable fair values		$ 717,000,000				$ 724,000,000
Investment without readily determinable fair values, impairment amount		0
Cumulative adjustments due to observable price changes		180,000,000
Cumulative adjustments due to impairment charges		120,000,000
Initial value of the excluded component								$ 1,000,000,000
Derivative asset fair value of collateral		0				0
Derivative liability fair value of collateral		1,600,000,000				2,100,000,000
Scenario, Forecast \| Interest Expense
Derivatives, Fair Value [Line Items]
Excluded component estimated to be amortized into interest expense				$ 94,000,000
Euro Denominated Debt \| Net Investment Hedges
Derivatives, Fair Value [Line Items]
Notional amount \| €					€ 750		€ 750
Interest rate swaps
Derivatives, Fair Value [Line Items]
Notional amount		24,025,000,000				24,025,000,000
Interest rate swaps \| Fair Value Hedges \| Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional value settled		0	$ 0
Pre-tax gain (loss) recognized in Other income, net and Interest expense		0	2,000,000
Interest rate swaps \| Fair Value Hedges \| Designated as Hedging Instrument \| Subsequent Event
Derivatives, Fair Value [Line Items]
Notional value settled	$ 985,000,000
Cross currency swaps
Derivatives, Fair Value [Line Items]
Pre-tax gain (loss) recognized in Other income, net and Interest expense		0	0
Notional amount		31,694,000,000				$ 32,053,000,000
Cross currency swaps \| Fair Value Hedges \| Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional value settled		359,000,000	3,067,000,000
Excluded component estimated to be amortized into interest expense		(848,000,000)	282,000,000
Cross currency swaps \| Fair Value Hedges \| Designated as Hedging Instrument \| Subsequent Event
Derivatives, Fair Value [Line Items]
Notional value settled	$ 817,000,000
Cross currency swaps \| Fair Value Hedges \| Interest Expense \| Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Excluded component estimated to be amortized into interest expense		$ 23,000,000	$ 26,000,000