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NEW ACCOUNTING PRONOUNCEMENTS - Textuals (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Nov. 01, 2018 | Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ (7) |  |  |
Retained Earnings (Accumulated Deficit) | (303) | $ (18) | $ (336) |
Long-term Investments | 75 | $ 102 | 68 |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  | 21.00% |  |
Operating Lease, Right-of-Use Asset |  | $ 195 |  |
Impact of Adopting New Revenue Recognition Guidance [Member] |  |  |  |
Retained Earnings (Accumulated Deficit) | 23 |  |  |
Long-term Investments | 0 |  |  |
Impact of Adopting New Tax Effects in AOCI Guidance [Member] |  |  |  |
Retained Earnings (Accumulated Deficit) | 7 |  |  |
Long-term Investments | 0 |  |  |
Impact of Adopting New Intra-Entity Tax Guidance [Member] |  |  |  |
Retained Earnings (Accumulated Deficit) | (2) |  |  |
Long-term Investments | 0 |  |  |
Impact of Adopting New Investments Valuation Guidance [Member] |  |  |  |
Retained Earnings (Accumulated Deficit) | 5 |  |  |
Long-term Investments | $ 7 |  |  |
Impact of Adopting New Retirement Benefits Guidance [Member] |  |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification |  | $ 10 | $ 24 | $ 34

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