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Discontinued Operations - Schedule of Components of Financial Results (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Oct. 31, 2024 | Oct. 31, 2023 | Oct. 31, 2022
Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Income from discontinued operations, net of income taxes |  | $ 821,670 | $ 2,843 | $ 14,369
Discontinued operations | Software Integrity business |  |  |  |
Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Revenue |  | 468,720 | 524,605 | 465,828
Cost of revenue |  | 153,081 | 191,350 | 165,684
Operating expenses |  | 265,029 | 337,235 | 286,820
Interest and other income (expense), net |  | 2,003 | 292 | (1,262)
Income (loss) from discontinued operations |  | 52,613 | (3,688) | 12,062
Gain on Software Integrity Divestiture | $ 868,800 | 868,830 | 0 | 0
Income (loss) from discontinued operations before income taxes |  | 921,443 | (3,688) | 12,062
Income tax provision (benefit) |  | 99,773 | (6,531) | (2,307)
Income from discontinued operations, net of income taxes |  | $ 821,670 | $ 2,843 | $ 14,369

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