Revenue Recognition (Estimated Revenue Expected to be Recognized In the Future) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Vehicle maintenance program, contract term	5 years
Revenue expected to be recognized on VCP contracts sold as of period end	$ 99.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue expected to be recognized on VCP contracts sold as of period end	$ 34.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, expected timing of satisfaction, period	2 years
Revenue expected to be recognized on VCP contracts sold as of period end	$ 47.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, expected timing of satisfaction, period	2 years
Revenue expected to be recognized on VCP contracts sold as of period end	$ 17.9