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AQUISITIONS - Resolution Bioscience Acquisition (Details) - USD ($) $ in Millions			12 Months Ended
	Apr. 15, 2021	Aug. 23, 2019	Oct. 31, 2021	Oct. 31, 2020
Business Acquisition [Line Items]
Fair Value of Contingent Consideration			$ 89	$ 0
Goodwill arising from acquisitions			365	0
Additions and adjustments to other intangibles				$ 0
Diagnostics and Genomics
Business Acquisition [Line Items]
Goodwill arising from acquisitions			365
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring
Business Acquisition [Line Items]
Fair Value of Contingent Consideration	$ 110		$ 89
Resolution Bioscience, Inc.
Business Acquisition [Line Items]
Purchase price for acquisition	561
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 145
Contingent consideration arrangements does not exceed			3 years 2 months 12 days
Additions and adjustments to other intangibles			$ 343
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			11 years
Deferred Tax Liability			$ 59
Net Tangible assets acquired			$ 22
BioTek
Business Acquisition [Line Items]
Purchase price for acquisition		$ 1,170
Goodwill arising from acquisitions		$ 483

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