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REVENUE - Revenue by End Markets (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Disaggregation of Revenue [Line Items]
Net revenue	$ 5,339	$ 5,163	$ 4,914
Pharmaceutical and Biopharmaceutical Market
Disaggregation of Revenue [Line Items]
Net revenue	1,754	1,604
Chemical and Energy Market
Disaggregation of Revenue [Line Items]
Net revenue	1,154	1,199
Diagnostics and Clinical Market
Disaggregation of Revenue [Line Items]
Net revenue	787	785
Food Market
Disaggregation of Revenue [Line Items]
Net revenue	517	486
Academia and Government Market
Disaggregation of Revenue [Line Items]
Net revenue	526	474
Environmental and Forensics Market
Disaggregation of Revenue [Line Items]
Net revenue	$ 601	$ 615

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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.

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