Restructuring and Other Charges - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2023 USD ($)	Jan. 31, 2023 USD ($) employee	Jul. 31, 2023 USD ($)	Jul. 31, 2022 USD ($)	Jan. 31, 2023 USD ($)
Restructuring Cost and Reserve [Line Items]
Lease impairment charges			$ 25	$ 0
Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Lease impairment charges	$ 17		$ 25		$ 14
Restructuring cost, number of positions eliminated | employee		300
Restructuring charges		$ 15