Revenue Recognition - Remaining Performance Obligation (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Contracts expected duration	one year
Aggregate transaction price allocated to performance obligations	$ 135.4	$ 108.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Aggregate transaction price allocated to performance obligations	135.4	$ 108.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-10-01
Revenue from Contract with Customer [Abstract]
Aggregate transaction price allocated to performance obligations	$ 127.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, expected duration	12 months
Aggregate transaction price allocated to performance obligations	$ 127.9