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Comprehensive Income - Summary of the Tax Effects Allocated to Each Component of Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss)      
Pre-Tax $ 11.2 $ 23.6 $ (9.7)
Tax (Expense) Benefit (4.0) (9.9) 22.3
Other comprehensive income, net of tax 7.2 13.7 12.6
Foreign currency translation gain (loss)      
Accumulated Other Comprehensive Income (Loss)      
Pre-Tax 10.3 25.5 (11.4)
Tax (Expense) Benefit (3.5) (10.3) 22.3
Other comprehensive income, net of tax 6.8 15.2 10.9
Change in net realized and unrealized gain (loss) on derivative financial instruments      
Accumulated Other Comprehensive Income (Loss)      
Pre-Tax 0.9 (1.9) 1.7
Tax (Expense) Benefit (0.5) 0.4 0.0
Other comprehensive income, net of tax $ 0.4 $ (1.5) $ 1.7