Derivative Financial Instruments - Effect of Derivative Instruments on Income Statement and Statement of Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Derivative Financial Instruments
Amount of gain (loss) recognized in OCI	$ (1)	$ (3)	$ (31)	$ 0
Amount of gain reclassified from OCI into revenue	(2,268)	(2,104)	(6,638)	(6,306)
Reclassification out of Accumulated Other Comprehensive Income \| Foreign Exchange Contract \| Cash Flow Hedges
Derivative Financial Instruments
Amount of gain reclassified from OCI into revenue	(3)	1	2	1
Amount of (gain) loss reclassified from OCI into cost of revenue	(2)	1	(4)	1
Cash Flow Hedging \| Foreign Exchange Contract \| Cash Flow Hedges
Derivative Financial Instruments
Amount of gain (loss) recognized in OCI	1	3	31	0
Cash Flow Hedging \| Cross Currency Swaps
Derivative Financial Instruments
Amount of gain (loss) recognized in OCI	14	(56)	341	5
Interest Expense \| Cash Flow Hedging \| Cross Currency Swaps
Derivative Financial Instruments
Amount of gain (loss) recognized in OCI	$ 11	$ 7	$ 31	$ 23

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Amount of net unrealized gain (loss) related to the change in fair value of foreign currency exchange rate derivatives designated as cash flow hedging instruments. Recorded in accumulated other comprehensive income to the extent that the cash flow hedge is determined to be effective.

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Derivative instruments gains losses in statement of financial performance.

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