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Revenues - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Oct. 31, 2025 | Oct. 31, 2024 | Oct. 31, 2025 | Oct. 31, 2024 | Jan. 31, 2025
Disaggregation of Revenue [Line Items] |  |  |  |  |
Deferred revenue | $ 546.0 |  | $ 546.0 |  | $ 608.6
Deferred revenue, revenue recognized out of beginning balance | 241.6 | $ 225.4 | 526.4 | $ 512.1 |
Remaining performance obligation, revenue expected to be recognized | $ 1,500.0 |  | $ 1,500.0 |  |
Geographic Concentration Risk | Revenue | United States |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Concentration Risk, Percentage | 62.00% | 64.00% | 63.00% | 65.00% |
Geographic Concentration Risk | Revenue | Japan |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Concentration Risk, Percentage | 26.00% | 24.00% | 25.00% | 23.00% |

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