Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current Tax Provision:
Federal	$ 400.2	$ 250.5	$ 357.7
State	66.7	63.2	84.7
Non-U.S.	140.8	92.0	130.6
Total	607.7	405.7	573.0
Deferred Tax Provision:
Federal	(1.1)	(54.0)	(126.0)
State	17.5	(1.4)	(10.7)
Non-U.S.	4.3	7.2	(6.0)
Total	20.7	(48.2)	(142.7)
Provision for Income Taxes	$ 628.4	$ 357.5	$ 430.3