Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Provision for Income Taxes
Income tax expense (benefit)	$ 19.9	$ 21.3	$ 51.8	$ 48.8
Effective tax rates (as a percent)	28.60%	26.60%	31.70%	29.50%
Unrecognized tax benefits, excluding penalties and interest	$ 49.8		$ 49.8		$ 51.4
Accrued interest and penalties related to uncertain tax positions	3.6		3.6		$ 3.1
Penalties and interest (benefit) expense relating to unrecognized tax benefits	$ 0.2		$ 0.7	$ 0.3
Statutory tax rate (as a percent)			21.00%
Change in tax rate - foreign jurisdictions (as a percent)			5.30%
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%