Income Taxes - Schedule of Current and Deferred Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Current:
Federal	$ 323,625	$ 257,913	$ 254,505
State	52,186	44,457	33,548
Foreign	20,086	9,159	18,473
Total current income tax expense	395,897	311,529	306,526
Deferred:
Federal	(78,476)	(88,110)	(173,941)
State	(12,875)	(20,201)	16,673
Foreign	800	(8,368)	(3,693)
Total deferred income tax expense	(90,551)	(116,679)	(160,961)
Total provision for income taxes	$ 305,346	$ 194,850	$ 145,565