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Revenues (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Revenues (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Contract liability, revenue recognized	$ 30.3	$ 49.8	$ 95.4	$ 122.7
Revenue, remaining performance obligation	$ 15.6		$ 15.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-07-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation, percent	60.00%		60.00%
Remaining performance obligation, period	6 months		6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation, percent	38.00%		38.00%
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	2.00%		2.00%
Remaining performance obligation, period