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Goodwill and Intangible Assets - Summary of Changes in Goodwill (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Goodwill [Roll Forward]    
Balance $ 2,976.5 $ 2,948.0
Goodwill related to acquisitions 237.3 20.9
Impact of foreign currency translation 61.3 7.6
Balance $ 3,275.1 $ 2,976.5