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Goodwill and Intangible Assets - Schedule of Summary of Changes in Goodwill (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Goodwill [Roll Forward]    
Beginning balance $ 307.2 $ 240.6
Acquisition activity 29.3 65.4
Translation and other 0.2 1.2
Ending balance $ 336.7 $ 307.2