Income Taxes - Unrecognized Tax Benefits Rollforward (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jan. 31, 2026 |
Jan. 31, 2025 |
Jan. 31, 2024 |
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| Unrecognized Tax Benefits [Roll Forward] | |||
| Gross amount of unrecognized tax benefits as of the beginning of the year | $ 65 | $ 49 | $ 43 |
| Additions based on tax positions related to a prior year | 4 | 4 | 0 |
| Additions based on tax positions related to current year | 9 | 12 | 7 |
| Reductions based on tax positions taken in a prior year | 0 | 0 | (1) |
| Gross amount of unrecognized tax benefits as of the end of the year | $ 78 | $ 65 | $ 49 |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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