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Revenue - Disaggregated Revenue (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]      
Revenue $ 3,858 $ 4,140 $ 4,163
Point in time      
Disaggregation of Revenue [Line Items]      
Revenue 115 111 110
Over time      
Disaggregation of Revenue [Line Items]      
Revenue 3,743 4,029 4,053
Commercial:      
Disaggregation of Revenue [Line Items]      
Revenue 1,992 2,017 2,104
Government:      
Disaggregation of Revenue [Line Items]      
Revenue 1,150 1,307 1,268
Transportation:      
Disaggregation of Revenue [Line Items]      
Revenue 709 746 719
Other:      
Disaggregation of Revenue [Line Items]      
Revenue 7 70 72
Other: | Divestitures      
Disaggregation of Revenue [Line Items]      
Revenue 7 70 72
Customer experience management | Commercial:      
Disaggregation of Revenue [Line Items]      
Revenue 636 629 648
Business operations solutions | Commercial:      
Disaggregation of Revenue [Line Items]      
Revenue 553 567 566
Healthcare claims and administration solutions | Commercial:      
Disaggregation of Revenue [Line Items]      
Revenue 368 367 361
Human capital solutions | Commercial:      
Disaggregation of Revenue [Line Items]      
Revenue 435 454 529
Government healthcare solutions | Government:      
Disaggregation of Revenue [Line Items]      
Revenue 589 576 603
Government services solutions | Government:      
Disaggregation of Revenue [Line Items]      
Revenue 561 731 665
Road usage charging & management solutions | Transportation:      
Disaggregation of Revenue [Line Items]      
Revenue 328 327 318
Transit solutions | Transportation:      
Disaggregation of Revenue [Line Items]      
Revenue 226 262 248
Curbside management solutions | Transportation:      
Disaggregation of Revenue [Line Items]      
Revenue 85 82 72
Public safety solutions | Transportation:      
Disaggregation of Revenue [Line Items]      
Revenue 62 67 73
Commercial vehicles | Transportation:      
Disaggregation of Revenue [Line Items]      
Revenue $ 8 $ 8 $ 8