Components of Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current provision:
Federal	$ 845.5	$ 567.0	$ 410.0
State	179.8	143.1	85.9
Foreign	395.8	335.0	243.5
Current Income Tax Expense (Benefit), Total	1,421.1	1,045.1	739.4
Deferred (benefit) provision:
Federal	(141.5)	(173.2)	(176.0)
State	(24.4)	(42.0)	(29.6)
Foreign	(137.8)	7.2	(3.0)
Deferred taxes	(303.7)	(208.0)	(208.6)
Income taxes	$ 1,117.4	$ 837.1	$ 530.8