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Revenue Recognition - Deferred Revenue and Transaction Price Allocated to the Remaining Performance Obligations (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Revenue from Contract with Customer [Abstract]        
Deferred revenue recognized $ 91.3 $ 68.2 $ 198.7 $ 148.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Revenue expected to be recognized 518.5   518.5  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Revenue expected to be recognized $ 305.2   $ 305.2  
Expected period of recognition 12 months   12 months  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Expected period of recognition 24 months   24 months