REVENUE - Revenue by End Markets (Details) - USD ($) $ in Millions	3 Months Ended
Jan. 31, 2020	Jan. 31, 2019
Net revenue	$ 1,357	$ 1,284
Pharmaceutical and Biopharmaceutical Market
Net revenue	423	391
Chemical and Energy Market
Net revenue	312	308
Diagnostics and Clinical Market
Net revenue	194	187
Food Market
Net revenue	130	129
Academia and Government Market
Net revenue	141	116
Environmental and Forensics Market
Net revenue	$ 157	$ 153

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.

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

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration