Summary of Significant Accounting Policies - Accounting for Credit Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 6.5	$ 6.0
Provision for credit losses, net	4.0	2.3
Receivables written-off	(0.7)	(2.2)
Transfer to held for sale	(1.4)	0.0
Currency translation adjustment	(1.2)	0.4
Balance at end of period	$ 7.2	$ 6.5