Cash Equivalents, Investments and Strategic Investments - Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Impairments	$ (5,000)	$ (7,158)	$ (31,521)	$ (25,911)
Net unrealized gains (losses) on marketable equity securities	(980)	650	(5,448)	(3,005)
Net unrealized losses on strategic investments in equity securities	(5,980)	(6,508)	(36,969)	(28,916)
Net unrealized losses on strategic investments in equity securities	400	0	1,704	1,713
Total—included in other expense, net	$ (5,580)	$ (6,508)	$ (35,265)	$ (27,203)