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REVENUE - Revenue by End Markets (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Apr. 30, 2024
Apr. 30, 2023
Net revenue $ 1,573 $ 1,717 $ 3,231 $ 3,473
Pharmaceutical and Biopharmaceutical        
Net revenue 542 612 1,107 1,251
Chemicals and Advanced Materials        
Net revenue 362 378 754 784
Diagnostics and Clinical        
Net revenue 239 250 467 489
Food        
Net revenue 139 161 296 321
Academia and Government        
Net revenue 139 159 289 305
Environmental and Forensics        
Net revenue $ 152 $ 157 $ 318 $ 323