Segment and Geographic Information - Schedule of Segment Profit or Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Segment Reporting Information [Line Items]
Net income	$ 309,085	$ 1,067,885	$ 73,980
Revenues from external customers	3,219,500	2,976,739	2,761,882
Depreciation and amortization	116,081	107,804	95,062
Interest expense	(2,546)	(1,550)	(6,844)
Provision for (benefit from) income taxes	38,243	(819,944)	19,699
Reportable Segment
Segment Reporting Information [Line Items]
Net income	309,085	1,067,885	73,980
Revenues from external customers	3,219,500	2,976,739	2,761,882
Depreciation and amortization	116,081	107,804	95,062
Interest income	41,582	45,516	58,584
Interest expense	(2,546)	(1,550)	(6,844)
Provision for (benefit from) income taxes	$ 38,243	$ (819,944)	$ 19,699