Restructuring and Other Charges - Narrative (Details) $ in Millions	12 Months Ended
	Jan. 31, 2025 USD ($) employee	Jan. 31, 2024 USD ($) employee	Jan. 31, 2023 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 11	$ 28	$ 15
Severance and termination benefit costs		4
Lease impairment charges	$ 0	$ 28	$ 14
2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring cost, number of positions eliminated | employee	180
2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring cost, number of positions eliminated | employee		400
Restructuring charges	$ 11	$ 24
2023 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring cost, number of positions eliminated | employee			300
Restructuring charges			$ 15