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Basis of Presentation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Reclassification [Line Items]
Revenue	$ 491	$ 457	$ 982	$ 891
Cost of revenue	$ 181	201	$ 365	410
Reclassification Adjustment | Reclassification, from Recurring Services to Consulting Services
Reclassification [Line Items]
Revenue		27		52
Cost of revenue		21		41
Reclassification Adjustment | Reclassification, from Recurring Services to Perpetual Software Hardware and Other
Reclassification [Line Items]
Revenue		8		17
Cost of revenue		$ 6		$ 13

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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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