GOODWILL AND OTHER INTANGIBLE ASSETS Disclosures and Components of Purchased Other Intangibles (Details) - USD ($) $ in Millions	Apr. 30, 2020	Oct. 31, 2019
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	$ 1,987	$ 2,086
Accumulated Amortization	1,066	979
Net Book Value	921	1,107
Purchased Technology
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	1,412	1,413
Accumulated Amortization	810	763
Net Book Value	602	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	110	102
Net Book Value	86	94
Customer Relationships
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	328	329
Accumulated Amortization	123	87
Net Book Value	205	242
Third-Party Technology and Licenses
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	28	28
Accumulated Amortization	23	22
Net Book Value	5	6
Total amortizable intangible assets
Finite-Lived Intangible Assets, Net
Gross Carrying Amount	1,964	1,971
Accumulated Amortization	1,066	979
Net Book Value	898	992
In-Process R&D
Indefinite-Lived Intangible Assets (Excluding Goodwill)
In-Process R&D	$ 23	$ 115