GOODWILL AND OTHER INTANGIBLE ASSETS Disclosures and Components of Purchased Other Intangibles (Details) - USD ($) $ in Millions	Jul. 31, 2020	Oct. 31, 2019
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	$ 1,994	$ 2,086
Accumulated Amortization	1,118	979
Net Book Value	876	1,107
Purchased Technology
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	1,419	1,413
Accumulated Amortization	839	763
Net Book Value	580	650
Backlog
Finite-Lived Intangible Assets, Net
Gross Carrying Amount		5
Accumulated Amortization		5
Net Book Value		0
Trademark/Tradenames
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	196	196
Accumulated Amortization	113	102
Net Book Value	83	94
Customer Relationships
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	330	329
Accumulated Amortization	142	87
Net Book Value	188	242
Third-Party Technology and Licenses
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	28	28
Accumulated Amortization	24	22
Net Book Value	4	6
Total amortizable intangible assets
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	1,973	1,971
Accumulated Amortization	1,118	979
Net Book Value	855	992
In-Process R&D
Indefinite-Lived Intangible Assets (Excluding Goodwill)
In-Process R&D	$ 21	$ 115