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Leases - Narrative (Details) - USD ($) $ in Millions | Jul. 31, 2025 | Jan. 31, 2025
--- | --- | ---
Lessee, Lease, Description [Line Items] |  |
Operating lease right-of-use assets | $ 719 | $ 336
Operating lease liabilities | $ 791 | $ 378
Lease for European Headquarters |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease, term of contract (in years) | 20 years |
Operating lease right-of-use assets | $ 313 |
Operating lease liabilities | 333 |
Leases for Data Centers and Office Space |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease, lease not yet commenced, payment | $ 35 |
Minimum | Leases for Data Centers and Office Space |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease, lease not yet commenced, term (years) | 5 years |
Maximum | Leases for Data Centers and Office Space |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease, lease not yet commenced, term (years) | 10 years |

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- Definition Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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