DERIVATIVES, Effect of derivative instruments on Consolidated Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended
Jan. 31, 2021	Jan. 31, 2020
Derivative
Loss reclassified from accumulated other comprehensive loss into cost of sales	$ (8)	$ 0
Cost of Products and Services
Derivative
Loss reclassified from accumulated other comprehensive loss into cost of sales	(8)	0
Cash Flow Hedging \| Cost of Products and Services
Derivative
Cash flow hedge net gain to be reclassified within next Twelve Months	6
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	(6)	1
Derivatives Designated as Hedging Instrument \| Cash Flow Hedging \| Foreign Exchange Contracts \| Cost of Products and Services
Derivative
Loss reclassified from accumulated other comprehensive loss into cost of sales	(8)	0
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	(4)	0
Derivatives Not Designated as Hedging Instruments \| Other income (expense)
Derivative
Loss recognized in other income (expense)	$ (4)	$ (2)

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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-Section 50
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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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