Revenue (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Disaggregation of Revenue [Line Items]
Advanced billings, revenue recognized	$ 47
Lease transactions	$ 8	$ 6
Services | Minimum
Disaggregation of Revenue [Line Items]
Period of recognition	1 year
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
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