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Derivative Financial Instruments - Narrative (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Derivatives Fair Value [Line Items]    
Unrealized gain (losses) net of income tax $ (0.5) $ 0.0
Foreign Exchange Forward    
Derivatives Fair Value [Line Items]    
Derivative, notional amount $ 66.8 9.3
Derivative remaining maturity period 1 year  
Derivative net current liability $ 1.0 $ 0.0