CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 67	$ 29	$ 129	$ (11)
Other comprehensive income (loss):
Net change in unrealized gains or losses on available-for-sale securities	(4)	7	(2)	(1)
Foreign currency translation adjustments	0	3	15	0
Other comprehensive income (loss)	(4)	10	13	(1)
Comprehensive income (loss)	$ 63	$ 39	$ 142	$ (12)