Cash Equivalents, Investments and Strategic Investments - Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Impairments	$ (500)	$ (5,200)	$ (32,021)	$ (11,578)
Net unrealized gains (losses) on marketable equity securities	237	(3,791)	(5,211)	(6,796)
Net unrealized losses on strategic investments in equity securities	(263)	(8,991)	(37,232)	(18,374)
Net unrealized gains (losses) on strategic investments in equity securities	8	380	1,712	(17,440)
Total—included in other expense, net	$ (255)	$ (8,611)	$ (35,520)	$ (35,814)