Valuation and Qualifying Accounts - Allowance for Uncollectible Accounts Receivable (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 98.3	$ 40.2	$ 42.5
New Accounting Pronouncement or Change in Accounting Principle, Description	0.0	9.0
Charges to costs and expenses	$ (14.9)	$ 50.5	10.1
Acquisitions/(dispositions)	(3.2)	8.6	(0.3)
Uncollectible accounts written off	(9.8)	(11.2)	(11.9)
Accounts Receivable, Allowance for Credit Loss, Recovery	0.3	0.2
Foreign currency translation adjustment	(2.2)	1.0	(0.2)
Balance at end of period	$ 68.5	$ 98.3	$ 40.2