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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

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