Revenue, Accounts Receivable, Deferred Revenue, and Remaining Performance Obligations - Narrative (Details) - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
Jan. 31, 2026 |
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| Disaggregation of Revenue [Line Items] | |||
| Allowance for doubtful accounts | $ 0 | $ 0 | |
| Revenue recognized | 988,700,000 | $ 820,900,000 | |
| Remaining performance obligation | $ 9,200,000,000 | ||
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-05-01 | |||
| Disaggregation of Revenue [Line Items] | |||
| Revenue, remaining performance obligation, percentage | 50.00% | ||
| Remaining performance obligation, remaining life | 12 months | ||
| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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