Income Taxes - Components of the Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Current provision for income taxes:
Federal	$ 785.3	$ 751.3	$ 574.4
State	142.9	114.7	106.9
Foreign	122.1	39.8	24.2
Total current	1,050.3	905.8	705.5
Deferred tax expense (benefit):
Federal	(294.1)	(504.7)	(372.3)
State	(46.8)	(42.8)	(41.1)
Foreign	28.9	54.7	42.6
Total deferred tax expense (benefit)	(312.0)	(492.8)	(370.8)
Total provision for income taxes	$ 738.3	$ 413.0	$ 334.7