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REVENUE - Revenue by Type (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | $ 6,319 | $ 5,339 | $ 5,163
Pharmaceutical and Biopharmaceutical Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 2,224 | 1,754 | 1,604
Chemical and Energy Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 1,328 | 1,154 | 1,199
Diagnostics and Clinical Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 938 | 787 | 785
Food Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 601 | 517 | 486
Academia and Government Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 576 | 526 | 474
Environmental and Forensics Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 652 | 601 | 615
Instrumentation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 2,657 | 2,249 | 2,150
Non-Instrumentation and Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | $ 3,662 | $ 3,090 | $ 3,013

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