Restructuring, Other Exit Costs, and Facility Reductions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Restructuring and Related Activities [Abstract]
Lease-related asset impairments	$ 1	$ 0	$ 12	$ 0
Impairment charges	$ 1		$ 7

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration