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GOODWILL AND OTHER INTANGIBLE ASSETS Text (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Sep. 20, 2024
Jan. 31, 2025
Oct. 31, 2024
Oct. 31, 2023
Oct. 31, 2022
Intangible Assets, Including Goodwill)          
Goodwill Additions     $ 526 $ 15  
Finite-Lived Intangible Assets, Period Increase (Decrease)     188 50  
Foreign exchange translation impact to other intangible assets     (5)   $ 2
Goodwill and Intangible Asset Impairment [Abstract]          
Goodwill impairment     0 0 0
Impairment of finite-lived intangible assets     0   0
Impairment of indefinite-lived intangible assets     6 0 0
Business Acquisition          
Intangible assets written-off     18 7  
Net gain on Divestiture of Business     0 43 0
Proceeds from Divestiture of Businesses     0 50 $ 0
Indefinite-Lived Intangible Assets, Period Increase (Decrease)     (4)    
Life Sciences and Diagnostics Markets          
Intangible Assets, Including Goodwill)          
Goodwill Additions     526 15  
Business Acquisition          
Goodwill, Transfers   $ 365      
Agilent CrossLab          
Intangible Assets, Including Goodwill)          
Goodwill Additions     0 0  
Business Acquisition          
Goodwill, Transfers   909      
Applied Markets          
Intangible Assets, Including Goodwill)          
Goodwill Additions     0 0  
Business Acquisition          
Goodwill, Transfers   $ (1,274)      
Purchased technology          
Intangible Assets, Including Goodwill)          
Finite-Lived Intangible Assets, Period Increase (Decrease)     $ 4    
Resolution Bioscience, Inc.          
Goodwill and Intangible Asset Impairment [Abstract]          
Impairment of finite-lived intangible assets       258  
Business Acquisition          
Net gain on Divestiture of Business       43  
Resolution Bioscience, Inc. | Cost of Product and Services          
Goodwill and Intangible Asset Impairment [Abstract]          
Impairment of finite-lived intangible assets       $ 249  
Business Acquisition          
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]       Cost of revenue  
Resolution Bioscience, Inc. | Selling, General and Administrative          
Goodwill and Intangible Asset Impairment [Abstract]          
Impairment of finite-lived intangible assets       $ 9  
Business Acquisition          
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]       Selling, general and administrative  
Acquisition of businesses          
Business Acquisition          
Purchase price for acquisition       $ 51  
BIOVECTRA          
Intangible Assets, Including Goodwill)          
Goodwill Additions $ 526        
Business Acquisition          
Purchase price for acquisition $ 915