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SHARE-BASED COMPENSATION Text (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2021 | Oct. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
ESPP plan purchase price (in hundredths) | 85.00% | 85.00% |  |
Inventory |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Share-based compensation capitalized in inventory |  |  | $ 0 | $ 0
Share-based Payment Arrangement, Option [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Vesting percentage |  |  | 25.00% |
Vesting Period |  |  | 4 years |
Share Based Compensation Arrangement By Share Based Payment Award Award Maximum Contractual Term |  |  | ten years |
Share Based Compensation Arrangement By Share Based Payment Award Incentive Compensation Plan Percent Of Market Price |  |  | 100.00% |
Restricted Stock Units (RSUs) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Vesting percentage |  |  | 25.00% |
Vesting Period |  |  | 4 years |
Minimum | Performance Shares [LTPP] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Vesting percentage |  |  | 0.00% |
Maximum | Performance Shares [LTPP] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Vesting percentage |  |  | 200.00% |

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- Definition Reflects the duration as to when the share-based award expires as specified in the award agreement, which may be presented in a variety of ways (for example, in years, months, quarter of a year). + References No definition available. + Details
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- Definition An entity may opt to disclose the percent of market value on offering date that participants pay for options granted. + References No definition available. + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Discount rate from fair value on purchase date that participants pay for shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition 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. + References No definition available. + Details
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- Definition Percentage of vesting of award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Amount of cost expensed and capitalized for award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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