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REVENUE - Revenue by Region (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2021
Disaggregation of Revenue [Line Items]      
Net revenue $ 6,833 $ 6,848 $ 6,319
Americas      
Disaggregation of Revenue [Line Items]      
Net revenue 2,732 2,682 2,404
Europe      
Disaggregation of Revenue [Line Items]      
Net revenue 1,754 1,699 1,688
Asia Pacific      
Disaggregation of Revenue [Line Items]      
Net revenue 2,347 2,467 2,227
Life Sciences and Applied Markets      
Disaggregation of Revenue [Line Items]      
Net revenue 3,856 4,007 3,663
Life Sciences and Applied Markets | Americas      
Disaggregation of Revenue [Line Items]      
Net revenue 1,284 1,331 1,199
Life Sciences and Applied Markets | Europe      
Disaggregation of Revenue [Line Items]      
Net revenue 920 907 893
Life Sciences and Applied Markets | Asia Pacific      
Disaggregation of Revenue [Line Items]      
Net revenue 1,652 1,769 1,571
Diagnostics and Genomics      
Disaggregation of Revenue [Line Items]      
Net revenue 1,409 1,389 1,296
Diagnostics and Genomics | Americas      
Disaggregation of Revenue [Line Items]      
Net revenue 814 784 695
Diagnostics and Genomics | Europe      
Disaggregation of Revenue [Line Items]      
Net revenue 417 410 417
Diagnostics and Genomics | Asia Pacific      
Disaggregation of Revenue [Line Items]      
Net revenue 178 195 184
Agilent CrossLab      
Disaggregation of Revenue [Line Items]      
Net revenue 1,568 1,452 1,360
Agilent CrossLab | Americas      
Disaggregation of Revenue [Line Items]      
Net revenue 634 567 510
Agilent CrossLab | Europe      
Disaggregation of Revenue [Line Items]      
Net revenue 417 382 378
Agilent CrossLab | Asia Pacific      
Disaggregation of Revenue [Line Items]      
Net revenue $ 517 $ 503 $ 472