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Revenue Recognition - Narrative (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]    
Contract assets $ 12.0 $ 4.3
Contract with customer, liability 30.0 8.9
Extended Warranty Revenue    
Disaggregation of Revenue [Line Items]    
Deferred revenue $ 2.8 $ 2.9