CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (81)	$ (209)	$ (311)	$ (662)
Other comprehensive income (loss):
Net change in unrealized gains or losses on available-for-sale securities	5	(8)	19	(27)
Foreign currency translation adjustments	(9)	(7)	(4)	(17)
Other comprehensive income (loss)	(4)	(15)	15	(44)
Comprehensive loss	$ (85)	$ (224)	$ (296)	$ (706)