Income Taxes - Components of Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
Federal	$ 30.6	$ (17.1)	$ 43.9
State and local	2.7	(4.6)	4.3
Foreign	97.5	146.4	84.0
Total current taxes	130.8	124.7	132.2
Deferred:
Federal	(12.1)	(16.9)	(3.6)
State and local	(0.7)	(3.4)	(2.9)
Foreign	1.8	(6.4)	3.9
Total deferred taxes	(11.0)	(26.7)	(2.6)
Provision for income taxes	$ 119.8	$ 98.0	$ 129.6