Derivative Financial Instruments - Effect of Derivative Instruments on Income Statement and Statement of Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Derivative Financial Instruments
Amount of gain (loss) recognized in OCI	$ 4	$ (15)	$ 12	$ (30)
Amount of gain reclassified from OCI into revenue	(2,336)	(2,301)	(4,461)	(4,370)
Foreign Exchange Contract \| Cash Flow Hedges
Derivative Financial Instruments
Amount of gain (loss) recognized in OCI	(4)	15	(12)	30
Cross Currency Swaps
Derivative Financial Instruments
Amount of gain (loss) recognized in OCI	15
Reclassification out of Accumulated Other Comprehensive Income \| Foreign Exchange Contract \| Cash Flow Hedges
Derivative Financial Instruments
Amount of gain reclassified from OCI into revenue	1	2	(2)	5
Amount of (gain) loss reclassified from OCI into cost of revenue	(2)	(1)	(4)	(2)
Location, Statement of Other Comprehensive Income, Balance [Axis]: us-gaap:OtherComprehensiveIncomeLossNetOfTax \| Cross Currency Swaps
Derivative Financial Instruments
Amount of gain (loss) recognized in OCI	$ 15	(271)	(85)	(355)
Income Statement Location [Axis]: us-gaap:InterestExpenseNonoperating \| Cross Currency Swaps
Derivative Financial Instruments
Amount of gain (loss) recognized in OCI		$ 9	$ 28	$ 20

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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