Components of Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current provision:
Federal	$ 679.2	$ 845.5	$ 567.0
State	158.2	179.8	143.1
Foreign	480.8	395.8	335.0
Current Income Tax Expense (Benefit), Total	1,318.2	1,421.1	1,045.1
Deferred (benefit) obligation:
Federal	(65.8)	(141.5)	(173.2)
State	(7.1)	(24.4)	(42.0)
Foreign	(6.4)	(137.8)	7.2
Deferred taxes	(79.3)	(303.7)	(208.0)
Income taxes	$ 1,238.9	$ 1,117.4	$ 837.1