GOODWILL AND OTHER INTANGIBLE ASSETS Disclosures and Components of Purchased Other Intangibles (Details) - USD ($) $ in Millions	Jan. 31, 2021	Oct. 31, 2020
Finite-Lived Intangible Assets, Net
Total Intangible Assets	$ 1,982	$ 1,976
Accumulated Amortization	1,195	1,145
Net Book Value	787	831
Purchased Technology
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	1,433	1,429
Accumulated Amortization	891	863
Net Book Value	542	566
Trademark/Tradenames
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	196	196
Accumulated Amortization	121	117
Net Book Value	75	79
Customer Relationships
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	332	330
Accumulated Amortization	176	158
Net Book Value	156	172
Third-Party Technology and Licenses
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	10	11
Accumulated Amortization	7	7
Net Book Value	3	4
Total amortizable intangible assets
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	1,971	1,966
Accumulated Amortization	1,195	1,145
Finite-Lived Intangible Assets, Net	776	821
In-Process R&D
Indefinite-Lived Intangible Assets (Excluding Goodwill)
In-Process R&D	$ 11	$ 10