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Revenues (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Revenues (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Contract liability, revenue recognized	$ 27.8	$ 32.2	$ 140.9	$ 154.9
Revenue, remaining performance obligation	$ 32.5		$ 32.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation, percent	13.00%		13.00%
Remaining performance obligation, period	3 months		3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation, percent	84.00%		84.00%
Remaining performance obligation, period	2 years		2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation, percent	3.00%		3.00%
Remaining performance obligation, period