v3.26.1
Revenue - Disaggregated Revenue (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disaggregation of Revenue [Line Items]    
Revenue $ 723 $ 751
Point in time    
Disaggregation of Revenue [Line Items]    
Revenue 26 23
Over time    
Disaggregation of Revenue [Line Items]    
Revenue 697 728
Commercial:    
Disaggregation of Revenue [Line Items]    
Revenue 361 402
Commercial: | Customer Experience Management    
Disaggregation of Revenue [Line Items]    
Revenue 119 144
Commercial: | BPaaS    
Disaggregation of Revenue [Line Items]    
Revenue 115 117
Commercial: | Integrated Digital Solutions    
Disaggregation of Revenue [Line Items]    
Revenue 127 141
Government:    
Disaggregation of Revenue [Line Items]    
Revenue 226 216
Government: | Government Healthcare Solutions    
Disaggregation of Revenue [Line Items]    
Revenue 137 126
Government: | Government Services Solutions    
Disaggregation of Revenue [Line Items]    
Revenue 89 90
Transportation:    
Disaggregation of Revenue [Line Items]    
Revenue 136 133
Transportation: | Road Usage Charging & Management Solutions    
Disaggregation of Revenue [Line Items]    
Revenue 53 65
Transportation: | Transit Solutions    
Disaggregation of Revenue [Line Items]    
Revenue $ 83 $ 68