Financial Instruments - Derivative Instruments Designated Net Investment Hedging Instruments (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative and Non-Derivative (Effective Portion), Tax (expense) benefit	$ 4	$ 49	$ (12)	$ 66
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion) Tax (expense) benefit	0	0	0	0
Accumulated Gain (Loss), Net, Cash Flow Hedge And Investment Hedge, Parent
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative and Non-Derivative (Effective Portion)	(13)	(161)	42	(214)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	0	0	0	0
Commodity contracts \| Gains (Losses) on Derivatives Qualifying as Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative and Non-Derivative (Effective Portion)	(1)	0	3	(1)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	0	1	0	1
Interest rate swaps \| Gains (Losses) on Derivatives Qualifying as Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative and Non-Derivative (Effective Portion)	0	0	0	0
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	0	(1)	0	(1)
Cross Currency Interest Rate Contract \| Accumulated Gain (Loss), Net, Investment Hedge, Parent
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative and Non-Derivative (Effective Portion)	(8)	(132)	43	(164)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	0	0	0	0
2026 Euro Notes \| Accumulated Gain (Loss), Net, Investment Hedge, Parent
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative and Non-Derivative (Effective Portion)	(8)	(78)	8	(115)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	$ 0	$ 0	$ 0	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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