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Summary of Significant Accounting Policies - Summary of Other (Income) Expense, Net (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]      
Other expense $ 72.2 $ 52.2 $ 43.8
Other income (17.0) (27.6) (12.2)
Other expense, net $ 55.2 $ 24.6 $ 31.6