Leases - Components of Lease Expense (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jan. 31, 2026 |
Jan. 31, 2025 |
Jan. 31, 2024 |
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| Restructuring Cost and Reserve [Line Items] | |||
| Operating lease cost | $ 161 | $ 123 | $ 109 |
| Short-term lease cost | 1 | 1 | 3 |
| Variable lease cost | 52 | 53 | 46 |
| Total operating lease cost | 214 | 177 | 158 |
| Office Space Reduction and Other Long-Lived Assets | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Impairment loss | $ 16 | $ 6 | $ 0 |
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- Definition Amount of lease cost recognized by lessee for lease contract. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of loss from impairment of right-of-use asset from operating lease. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of short-term lease cost, excluding expense for lease with term of one month or less. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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