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Contract Balances and Performance Obligations - Narrative (Details) - USD ($) $ in Billions | 3 Months Ended | 6 Months Ended
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Jul. 31, 2025 | Jul. 31, 2024 | Jul. 31, 2025 | Jul. 31, 2024
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |
Subscription revenue recognized that was included in total unearned revenue balance at beginning of period | $ 1.7 | $ 1.6 | $ 3.1 | $ 2.8
Subscription services |  |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |
Revenue is expected to be recognized from remaining performance obligations for subscription contracts | 25.4 |  | 25.4 |
Subscription services | Minimum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-08-01 |  |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |
Revenue is expected to be recognized from remaining performance obligations for subscription contracts | $ 7.9 |  | $ 7.9 |
Recognition period (in months) | 12 months |  | 12 months |
Subscription services | Maximum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-08-01 |  |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |
Revenue is expected to be recognized from remaining performance obligations for subscription contracts | $ 14.1 |  | $ 14.1 |
Recognition period (in months) | 24 months |  | 24 months |

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