Segments - Schedule of Long-lived Assets by Geographic Areas (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 258	$ 286
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	158	183
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	146	170
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	12	13
Europe, Middle East, and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	63	64
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 37	$ 39