Schedule II (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 26.5	$ 16.0	$ 15.4
Additions	1.7	11.7	5.5
Deductions	(6.2)	(1.2)	(4.9)
Balance at End of Year	22.0	26.5	16.0
Valuation Allowance for Deferred Tax Assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	208.1	178.3	159.0
Additions	21.9	30.0	44.9
Deductions	(19.1)	(0.2)	(25.6)
Balance at End of Year	$ 210.9	$ 208.1	$ 178.3