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FAIR VALUE MEASUREMENTS (Fair Value of Assets and Liabilities Measured on a Recurring Basis) (Details) - USD ($) $ in Millions | Oct. 31, 2019 | Oct. 31, 2018
--- | --- | ---
Assets, Long-term [Abstract] |  |
Equity investments | $ 37 | $ 30
Equity investments - other | 9 | 16
Fair Value, Recurring [Member] |  |
Assets, Short-term [Abstract] |  |
Cash equivalents (money market funds) | 932 | 484
Derivative instruments asset (foreign exchange contracts) | 2 | 6
Assets, Long-term [Abstract] |  |
Equity investments | 37 | 30
Equity investments - other | 9 | 16
Assets, Fair Value Disclosure | 980 | 536
Liabilities, Short-term [Abstract] |  |
Derivative instruments liabilities (foreign exchange contracts) | 6 | 6
Liabilities, Long-term [Abstract] |  |
Deferred compensation liability | 14 | 13
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 20 | 19
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets, Short-term [Abstract] |  |
Cash equivalents (money market funds) | 932 | 484
Derivative instruments asset (foreign exchange contracts) | 0 | 0
Assets, Long-term [Abstract] |  |
Equity investments | 37 | 30
Equity investments - other | 0 | 0
Assets, Fair Value Disclosure | 969 | 514
Liabilities, Short-term [Abstract] |  |
Derivative instruments liabilities (foreign exchange contracts) | 0 | 0
Liabilities, Long-term [Abstract] |  |
Deferred compensation liability | 0 | 0
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | 0
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) |  |
Assets, Short-term [Abstract] |  |
Cash equivalents (money market funds) | 0 | 0
Derivative instruments asset (foreign exchange contracts) | 2 | 6
Assets, Long-term [Abstract] |  |
Equity investments | 0 | 0
Equity investments - other | 0 | 0
Assets, Fair Value Disclosure | 2 | 6
Liabilities, Short-term [Abstract] |  |
Derivative instruments liabilities (foreign exchange contracts) | 6 | 6
Liabilities, Long-term [Abstract] |  |
Deferred compensation liability | 14 | 13
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 20 | 19
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) |  |
Assets, Short-term [Abstract] |  |
Cash equivalents (money market funds) | 0 | 0
Derivative instruments asset (foreign exchange contracts) | 0 | 0
Assets, Long-term [Abstract] |  |
Equity investments | 0 | 0
Equity investments - other | 0 | 0
Assets, Fair Value Disclosure | 0 | 0
Liabilities, Short-term [Abstract] |  |
Derivative instruments liabilities (foreign exchange contracts) | 0 | 0
Liabilities, Long-term [Abstract] |  |
Deferred compensation liability | 0 | 0
Financial and Nonfinancial Liabilities, Fair Value Disclosure | $ 0 | $ 0

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