FAIR VALUE MEASUREMENTS, Fair value of assets and liabilities measured on a recurring basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Oct. 31, 2016	Oct. 31, 2015
Assets, Short-term [Abstract]
Cash equivalents (money market funds)	$ 1,482	$ 1,411
Derivative instruments (foreign exchange contracts)	9	4
Assets, Long-term [Abstract]
Trading securities	31	35
Total assets measured at fair value	1,522	1,450
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	8	5
Liabilities, Long-term [Abstract]
Deferred compensation liability	31	35
Total liabilities measured at fair value	39	40
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets, Short-term [Abstract]
Cash equivalents (money market funds)	1,482	1,411
Derivative instruments (foreign exchange contracts)	0	0
Assets, Long-term [Abstract]
Trading securities	31	35
Total assets measured at fair value	1,513	1,446
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	0	0
Liabilities, Long-term [Abstract]
Deferred compensation liability	0	0
Total liabilities measured at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets, Short-term [Abstract]
Cash equivalents (money market funds)	0	0
Derivative instruments (foreign exchange contracts)	9	4
Assets, Long-term [Abstract]
Trading securities	0	0
Total assets measured at fair value	9	4
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	8	5
Liabilities, Long-term [Abstract]
Deferred compensation liability	31	35
Total liabilities measured at fair value	39	40
Significant Unobservable Inputs (Level 3) [Member]
Assets, Short-term [Abstract]
Cash equivalents (money market funds)	0	0
Derivative instruments (foreign exchange contracts)	0	0
Assets, Long-term [Abstract]
Trading securities	0	0
Total assets measured at fair value	0	0
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	0	0
Liabilities, Long-term [Abstract]
Deferred compensation liability	0	0
Total liabilities measured at fair value	$ 0	$ 0