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REVENUE - Revenue by End Markets (Details) - USD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | $ 5,163 | $ 4,914 | $ 4,472
Pharmaceutical and Biopharmaceutical Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 1,604 |  |
Chemical and Energy Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 1,199 |  |
Diagnostics and Clinical Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 785 |  |
Food Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 486 |  |
Academia and Government Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | 474 |  |
Environmental and Forensics Market |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net revenue | $ 615 |  |

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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