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Revenue (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]      
Advanced billings, revenue recognized $ 52    
Lease transactions $ 6 $ 6  
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Total revenue Total revenue Total revenue
Services | Minimum      
Disaggregation of Revenue [Line Items]      
Period of recognition 1 year    
Services | Maximum      
Disaggregation of Revenue [Line Items]      
Period of recognition 5 years    
Maintenance And Subscription Services | Minimum      
Disaggregation of Revenue [Line Items]      
Period of recognition 1 year    
Maintenance And Subscription Services | Maximum      
Disaggregation of Revenue [Line Items]      
Period of recognition 5 years    
SendTech Solutions      
Disaggregation of Revenue [Line Items]      
Expected timing of satisfaction period, not included (less then) 12 months