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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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Amount of investment in equity security without readily determinable fair value.

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Fair value of financial and nonfinancial obligations.

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Amount of investment in marketable security.

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