Derivative Financial Instruments - Schedule of Derivative Instruments Designated As Hedging Instrument Effect on Condensed Consolidated Statements of Comprehensive Income (Details) - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - Foreign exchange contracts [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative [Line Items]
(Loss)/gain recognized in OCI (effective element)	$ (6)	$ (2)	$ (12)	$ 3
Gain/(loss) reclassified from Accumulated OCL into income (effective element)	(2)	1	0	5
Revenue [Member]
Derivative [Line Items]
Gain/(loss) reclassified from Accumulated OCL into income (effective element)	0	(1)	1	(3)
Salaries and Benefits [Member]
Derivative [Line Items]
Gain/(loss) reclassified from Accumulated OCL into income (effective element)	(2)	2	(1)	5
Discontinued Operations [Member]
Derivative [Line Items]
Gain/(loss) reclassified from Accumulated OCL into income (effective element)	$ 0	$ 0	$ 0	$ 3