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SHARE-BASED COMPENSATION General Disclosures (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2019
Employee stock purchase plan [Abstract] |  |  |
Compensation percentage maximum eligible contribution to purchase shares of common stock | 10.00% |  |
ESPP eligible employee common stock purchase price ratio | 85.00% |  |
Maximum number of shares authorized for issuance under the ESPP (in shares) | 31,000,000 |  |
Number of shares purchased under ESPP (in shares) | 462,237 | 628,644 | 603,488
Aggregate Value stock issued under Employee Stock Purchase Plan | $ 46 | $ 41 | $ 37
Aggregate participants contributions to ESPP | $ 26 |  |
Incentive compensation plans [Abstract] |  |  |
Common stock available for future awards under the 2018 Stock Plan (in shares) | 23,284,195 |  |
Percentage market value of the common stock option exercise price is generally not less than (in hundredths) | 100.00% |  |
Employee Stock Purchase Plan |  |  |
Incentive compensation plans [Abstract] |  |  |
Common stock available for future awards under the 2018 Stock Plan (in shares) | 25,365,340 |  |
Share-based Payment Arrangement, Option |  |  |
Incentive compensation plans [Abstract] |  |  |
Percentage which rate options generally vest per year (in hundredths) | 25.00% |  |
Number of years from the date of grant generally vest (in years) | 4 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 10 years |  |
Restricted Stock Units (RSUs) |  |  |
Incentive compensation plans [Abstract] |  |  |
Percentage which rate options generally vest per year (in hundredths) | 25.00% |  |
Number of years from the date of grant generally vest (in years) | 4 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 10 years |  |
Long-Term Performance Plan |  |  |
Incentive compensation plans [Abstract] |  |  |
Number of years from the date of grant generally vest (in years) | 3 years |  |
Long-Term Performance Plan | Minimum |  |  |
Incentive compensation plans [Abstract] |  |  |
Percentage which rate options generally vest per year (in hundredths) | 0.00% |  |
Long-Term Performance Plan | Maximum |  |  |
Incentive compensation plans [Abstract] |  |  |
Percentage which rate options generally vest per year (in hundredths) | 200.00% |  |

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- Definition Aggregate participant contributions to employee stock purchase plan for the purchase of shares of the company's common stock not yet issued to participants at the end of the period. Shares are excluded from the available for issuance balance at the end of the period. + 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 The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan. + 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 Number of shares authorized for issuance 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)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + 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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