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GOODWILL AND OTHER INTANGIBLE ASSETS Text (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Intangible Assets, Including Goodwill)      
Goodwill Additions $ 0 $ 625  
Additions and adjustments to other intangibles 0    
Goodwill and Intangible Asset Impairment [Abstract]      
Goodwill impairment 0 0 $ 0
Impairment of finite-lived intangible assets 0 0 21
Impairment of indefinite-lived intangible assets 90 0 $ 0
Business Acquisition      
Write-off of fully amortized intangible assets $ 17    
Diagnostics and Genomics      
Intangible Assets, Including Goodwill)      
Indefinite-lived Intangible Assets, Purchase Accounting Adjustments   (11)  
Life Sciences and Applied Markets      
Intangible Assets, Including Goodwill)      
Goodwill Additions   636  
Advanced Analytical Technologies, Inc (AATI) | Diagnostics and Genomics      
Intangible Assets, Including Goodwill)      
Indefinite-lived Intangible Assets, Purchase Accounting Adjustments   (11)  
BioTek and ACEA | Life Sciences and Applied Markets      
Intangible Assets, Including Goodwill)      
Goodwill Additions   636  
Additions and adjustments to other intangibles   $ 744