Business and Summary of Significant Accounting Policies - Cloud Computing Arrangements (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Property, Plant and Equipment [Line Items]
Amortization	$ 43	$ 53	$ 42
Cloud-based Software Hosting Arrangements
Property, Plant and Equipment [Line Items]
Capitalized software development costs	380	327
Accumulated amortization	$ 175	$ 136

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

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The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of accumulated amortization of asset recognized from cost incurred to obtain or fulfill contract with customer.

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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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