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Net Loss Per Share - Summary of Basic and Diluted Net Loss Per Share (Parenthetical) (Details) - shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2026 | Apr. 30, 2025 | Apr. 30, 2026 | Apr. 30, 2025
Earnings Per Share [Line items] |  |  |  |  |
Weighted-average common shares outstanding, basic | [1] | 69,724,761 | 51,019,363 | 68,473,598 | 50,997,987
Weighted-average common shares outstanding, diluted | [1] | 69,724,761 | 51,019,363 | 68,473,598 | 50,997,987
Pre-funded warrants |  |  |  |  |
Earnings Per Share [Line items] |  |  |  |  |
Weighted-average common shares outstanding, basic |  | 2,735,295 |  | 2,735,295 |
Weighted-average common shares outstanding, diluted |  | 2,735,295 |  | 2,735,295 |
[1] | Pre-funded warrants of 2,735,295 are included within the weighted-average number of common shares calculation for 2026.

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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 16 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482689/260-10-45-16 + Details
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482689/260-10-45-10 + Details
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