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GOODWILL AND OTHER INTANGIBLE ASSETS Text (Details)
$ in Millions
 3 Months Ended 12 Months Ended
Jan. 31, 2024
USD ($)
Oct. 31, 2023
USD ($)
numberOfCustomers
Oct. 31, 2022
USD ($)
Oct. 31, 2021
USD ($)
Intangible Assets, Including Goodwill)        
Goodwill Additions   $ 15 $ 19  
Additions and adjustments to other intangibles   50    
Foreign exchange translation impact to other intangible assets   2 (3)  
Goodwill and Intangible Asset Impairment [Abstract]        
Goodwill impairment $ 0 0 0 $ 0
Impairment of finite-lived intangible assets   0 0 0
Impairment of indefinite-lived intangible assets   0 0 0
Business Acquisition        
Intangible assets written-off   7    
Net gain on Divestiture of Business   43 0 0
Proceeds from Divestiture of Businesses   50 0 $ 0
Diagnostics and Genomics        
Intangible Assets, Including Goodwill)        
Goodwill Additions   15 0  
Business Acquisition        
Goodwill, Transfers $ 168      
Life Sciences and Applied Markets        
Intangible Assets, Including Goodwill)        
Goodwill Additions   0 19  
Agilent CrossLab        
Intangible Assets, Including Goodwill)        
Goodwill Additions   0 0  
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    
Polymer Standards Service GmbH        
Intangible Assets, Including Goodwill)        
Goodwill Additions     19  
Additions and adjustments to other intangibles     35  
Business Acquisition        
Purchase price for acquisition     $ 41  
Acquisition of businesses        
Business Acquisition        
Number of Businesses Acquired | numberOfCustomers   2    
Purchase price for acquisition   $ 51