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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