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Borrowing Arrangements - Schedule of Long-Term Borrowing (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Total obligations $ 346.5 $ 362.1
Other borrowings 25.6 31.5
Deferred financing costs (1.7) (1.7)
Less: Current portion of long-term borrowings 25.8 25.0
Total long-term borrowings, excluding current portion 320.7 337.1
Senior Credit Facility, Net of Original Discount on Borrowings    
Debt Instrument [Line Items]    
Total obligations $ 322.6 $ 332.3