CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 28	$ (355)	$ (815)
Other comprehensive income (loss):
Net change in unrealized gains or losses on available-for-sale securities	0	26	(12)
Foreign currency translation adjustments	(6)	1	(9)
Other comprehensive income (loss)	(6)	27	(21)
Comprehensive income (loss)	$ 22	$ (328)	$ (836)