Derivative Financial Instruments (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Amount of gain (loss) recognized in OCI	$ 10	$ (9)	$ 14
Amount of (gain) loss reclassified from OCI into revenue	(5,195)	(4,876)	(5,249)
Other Comprehensive Income (Loss) \| Foreign Exchange Contract
Derivative [Line Items]
Amount of gain (loss) recognized in OCI	(10)	9	(14)
Other Comprehensive Income (Loss) \| Cross Currency Swaps
Derivative [Line Items]
Amount of gain (loss) recognized in OCI	94	(103)	22
Other Comprehensive Income (Loss) \| Foreign Currency Denominated Debt
Derivative [Line Items]
Amount of gain (loss) recognized in OCI	48	(55)	13
Reclassification out of Accumulated Other Comprehensive Income [Member] \| Foreign Exchange Contract
Derivative [Line Items]
Amount of (gain) loss reclassified from OCI into revenue	4	(4)	7
Amount of (gain) loss reclassified from OCI into cost of revenue	0	1	5
Interest Expense \| Cross Currency Swaps
Derivative [Line Items]
Amount of gain (loss) recognized in OCI	$ 21	$ 19	$ 16

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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