Revenue Recognition Estimated Revenue Expected to be Recognized In the future (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
Revenue Recognition [Abstract]
Revenue expected to be recognized on VCP contracts sold as of period end	$ 87.2
Vehicle maintenance program, contract term	5 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue Recognition [Abstract]
Revenue expected to be recognized on VCP contracts sold as of period end	$ 29.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue Recognition [Abstract]
Revenue expected to be recognized on VCP contracts sold as of period end	$ 43.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-07-01
Revenue Recognition [Abstract]
Revenue expected to be recognized on VCP contracts sold as of period end	$ 14.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	2 years