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DERIVATIVES, Effect of derivative instruments on Consolidated Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Derivative
Loss reclassified from accumulated other comprehensive income (loss) into cost of sales	$ 1	$ 1	$ 2	$ 6
Interest Expense
Derivative
Loss reclassified from accumulated other comprehensive income (loss) into cost of sales	0	0	(1)	0
Cost of Products and Services
Derivative
Loss reclassified from accumulated other comprehensive income (loss) into cost of sales	1	1	3	6
Cash Flow Hedging \| Cost of Products and Services
Derivative
Cash flow hedge net gain to be reclassified within next Twelve Months	(5)
Derivatives Designated as Hedging Instrument \| Cash Flow Hedging \| Foreign Exchange Contracts \| Accumulated Other Comprehensive Income (Loss)
Derivative
Gain (loss) recognized in accumulated other comprehensive loss	(9)	4	(6)	2
Derivatives Designated as Hedging Instrument \| Cash Flow Hedging \| Foreign Exchange Contracts \| Interest Expense
Derivative
Loss reclassified from accumulated other comprehensive income (loss) into cost of sales	0	0	(1)	0
Derivatives Designated as Hedging Instrument \| Cash Flow Hedging \| Foreign Exchange Contracts \| Cost of Products and Services
Derivative
Loss reclassified from accumulated other comprehensive income (loss) into cost of sales	1	1	3	6
Gain recognized in cost of sales	0	(1)	2	1
Derivatives Designated as Hedging Instrument \| Net Investment Hedging [Member] \| Foreign Exchange Contracts \| Accumulated Other Comprehensive Income (Loss)
Derivative
Gain (loss) recognized in accumulated other comprehensive loss	(7)	0	(6)	0
Derivatives Not Designated as Hedging Instruments \| Other income (expense)
Derivative
Gain recognized in cost of sales	$ 9	$ 0	$ 6	$ (2)