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RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS, Financial Statement Location (Details) - USD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2020 | Oct. 31, 2019
Pension Plan | Non-U.S. Plans |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Amortization of net prior service cost (benefit) | $ 0 |
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year | 52 |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | 149 | $ 156
Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Net Actuarial Gain Loss Before Tax | 311 | 330
Prior service costs (benefits) | 0 | 0
Total | 311 | 330
Pension Plan | Non-U.S. Plans | Other Assets |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | (123) | (106)
Pension Plan | Non-U.S. Plans | Employee compensation and benefits [Member] |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | 0 | 0
Pension Plan | Non-U.S. Plans | Retirement and post-retirement benefits |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | (272) | (262)
Pension Plan | U.S. Plan |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Amortization of net prior service cost (benefit) | 0 |
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year | 4 |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | 71 | 59
Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Net Actuarial Gain Loss Before Tax | 134 | 115
Prior service costs (benefits) | 0 | 0
Total | 134 | 115
Pension Plan | U.S. Plan | Other Assets |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | 0 | 0
Pension Plan | U.S. Plan | Employee compensation and benefits [Member] |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | (1) | (1)
Pension Plan | U.S. Plan | Retirement and post-retirement benefits |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | (70) | (58)
Post-Retirement Benefit Plan | U.S. Plan |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Amortization of net prior service cost (benefit) | (1) |
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year | 4 |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | 1 | (1)
Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Net Actuarial Gain Loss Before Tax | 11 | 10
Prior service costs (benefits) | (5) | (12)
Total | 6 | (2)
Post-Retirement Benefit Plan | U.S. Plan | Other Assets |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | 0 | (1)
Post-Retirement Benefit Plan | U.S. Plan | Employee compensation and benefits [Member] |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | 0 | 0
Post-Retirement Benefit Plan | U.S. Plan | Retirement and post-retirement benefits |  |
Accumulated other comprehensive income expected to be recognized as components of net expense during the next fiscal year [Abstract] |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | $ (1) | $ 0

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- Definition The net increase or decrease of changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan, recognized in other comprehensive income. + References No definition available. + Details
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- Definition Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income from prior service cost (credit) of defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 + Details
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