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Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Goodwill [Roll Forward]    
Goodwill, beginning of period $ 3,911.8 $ 3,468.0
Acquisitions, including post acquisition adjustments 269.7 447.0
Disposals and deconsolidations (44.4) (3.2)
Goodwill, end of period $ 4,137.1 $ 3,911.8