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Revenue Recognition - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Disaggregation of Revenue [Line Items]    
Deferred revenue, current $ 43.1 $ 32.4
Deferred revenue, noncurrent $ 80.6 $ 57.4
Minimum    
Disaggregation of Revenue [Line Items]    
Extended service warranty period 12 months  
Maximum    
Disaggregation of Revenue [Line Items]    
Extended service warranty period 84 months