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FAIR VALUE MEASUREMENTS, Contingent Consideration (Details) - USD ($)
$ in Millions
3 Months Ended
Jul. 31, 2022
Apr. 30, 2022
Oct. 31, 2021
Jul. 31, 2021
Apr. 30, 2021
Oct. 31, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Fair Value of contingent consideration $ 67 $ 67 $ 89 $ 110 $ 96 $ 0
Resolution Bioscience, Inc.            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Contingent Consideration maximum earn-out period 2 years 4 months 24 days          
Contingent Consideration Arrangement - Maximum $ 145          
Resolution Bioscience, Inc. | Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Revenue Component            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Fair Value of contingent consideration $ 0