Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Provision for Income Taxes
Income tax expense (benefit)	$ 31.9	$ 27.5
Effective tax rates (as a percent)	33.90%	32.20%
Unrecognized tax benefits, excluding penalties and interest	$ 50.9		$ 51.4
Accrued interest and penalties related to uncertain tax positions	3.5		$ 3.1
Penalties and interest (benefit) expense relating to unrecognized tax benefits	$ 0.4	$ 0.1
Statutory tax rate (as a percent)	21.00%
Change in tax rate - foreign jurisdictions (as a percent)	5.20%
Germany
Provision for Income Taxes
Statutory tax rate (as a percent)	30.00%
Switzerland
Provision for Income Taxes
Statutory tax rate (as a percent)	20.00%