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ACQUISITIONS ACQUISITIONS - Intangible Assets (Details) - USD ($) $ in Millions	Aug. 23, 2019	Oct. 31, 2020	Oct. 31, 2019
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		$ 1,966	$ 1,971
In-Process R&D		10	115
Total intangible assets acquired - excluding goodwill		1,976	2,086
BioTek
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 637
In-Process R&D	4
Total intangible assets acquired - excluding goodwill	641
Developed product technology
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		1,429	1,413
Developed product technology | BioTek
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	387
Customer relationships
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		$ 330	329
Customer relationships | BioTek
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	202
Backlog
Business Acquisition [Line Items]
Finite-lived intangible assets acquired			$ 5
Backlog | BioTek
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 5
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	2 months
Tradenames and trademarks | BioTek
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 43
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Minimum | Developed product technology | BioTek
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Minimum | Customer relationships | BioTek
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years
Maximum | Developed product technology | BioTek
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	13 years
Maximum | Customer relationships | BioTek
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	8 years

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- Definition

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