Business Acquisitions and Dispositions - Summary of the 2020 Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill	$ 1,871.3	$ 1,873.1	$ 1,761.6
2020 Acquisitions
Business Acquisition [Line Items]
Tangible assets acquired		64.7
Intangible assets		103.2
Goodwill		106.3
Net deferred taxes		(8.8)
Other liabilities assumed		(27.8)
Total Estimate of Consideration Transferred, Net of Cash Acquired		$ 237.6