Benefit Plans - Summary of RSA and RSU Activity (Details) - $ / shares	3 Months Ended	6 Months Ended
Apr. 30, 2021	Apr. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted Stock Awards and Units, Outstanding, Shares, Beginning Balance	2,914,997	2,067,140
Restricted Stock Awards and Units, Vested, Shares	(81,878)	(221)
Restricted Stock Awards and Units, Forfeited, Shares	(53,532)
Restricted Stock Awards and Units, Outstanding, Shares, Ending Balance	2,817,137	2,817,137
Restricted Stock Awards and Units, Outstanding, Weighted-Average Fair Value, Beginning Balance	$ 5.46	$ 5.06
Restricted Stock Awards and Units, Vested, Weighted-Average Fair Value	13.13	20.40
Restricted Stock Awards and Units, Forfeited, Weighted-Average Fair Value	10.86
Restricted Stock Awards and Units, Outstanding, Weighted-Average Fair Value, Ending Balance	$ 5.24	$ 5.24
Performance Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted Stock Awards and Units, Granted, Shares		551,252
Restricted Stock Awards and Units, Granted, Weighted-Average Fair Value		$ 14.89
Time Based Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted Stock Awards and Units, Granted, Shares	37,550	296,826
Restricted Stock Awards and Units, Granted, Weighted-Average Fair Value	$ 11.05	$ 3.28

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
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