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Revenue Recognition - Schedule of Classification of Service-type Warranties in Condensed Consolidated Balance Sheets (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Extended Product Warranty Accrual Balance Sheet Classification [Abstract]        
Service-type warranties, other current liabilities $ 22.3 $ 21.8    
Service-type warranties, other long-term liabilities 44.6 44.0    
Service-type warranties $ 66.9 $ 65.8 $ 63.0 $ 64.4