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Goodwill and Intangible Assets - Goodwill (Details)
$ in Millions
9 Months Ended
Sep. 30, 2021
USD ($)
Goodwill [Roll Forward]  
Balance, December 31, 2020 $ 1,468.9
Foreign currency and other adjustments (4.6)
Balance, September 30, 2021 $ 1,464.3