Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Taxes [Abstract]
Effective tax rate			26.40%	30.60%
Income taxes, impact of real estate repositioning costs and increase in U.K. statutory tax rate			$ 10.7
Income taxes, impact of previously unrecognized tax benefits			10.0
Charges arising from the effects of the war in Ukraine	$ 0.0	$ 0.0	0.0	$ 113.4
Income tax expense related to charges arising from the effects of the war in Ukraine				$ 4.8
Unrecognized tax benefits	159.6		159.6
Unrecognized tax benefits that would impact effective tax rate	$ 153.8		$ 153.8