Financial Instruments - Non-Designated Derivative Instruments Gains (Losses) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Foreign exchange contracts - forwards and options \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gain (loss)	$ (14)	$ 3	$ (47)	$ 12

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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+ Details