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INCOME TAXES INCOME TAXES - Uncertain Tax Positions (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
Operating Loss Carryforwards [Line Items] |  |  |
Unrecognized tax benefit including interest and penalties | $ 227 |  |
Unrecognized Tax Benefits Rollforward |  |  |
Balance, beginning of year | 214 | $ 224 | $ 293
Additions for tax positions related to the current year | 7 | 27 | 32
Additions for tax positions from prior years | 12 | 2 | 1
Reductions for tax positions from prior years | 2 | 13 | 3
Settlements with taxing authorities | 0 | 0 | (52)
Statute of limitations expirations | (25) | (26) | (47)
Balance, end of year | 206 | 214 | 224
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract] |  |  |
Interest and penalties accrued related to unrecognized tax benefits accrued and reported | 36 | 27 |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 204 |  |
Income tax expense (benefit) | (152) | 630 | 119
Unrecognized tax benefits that would not impact the effective tax rate | 23 |  |
Tax Interest and Penalties [Member] |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | $ 9 | $ 11 | $ (9)

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