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ACQUISITIONS - Text (Details) - USD ($) $ in Millions	Aug. 23, 2019	Nov. 14, 2018	Oct. 31, 2020	Oct. 31, 2019
ACEA Biosciences, Inc.
Business Acquisition [Line Items]
Purchase price for acquisition		$ 250
BioTek
Business Acquisition [Line Items]
Purchase price for acquisition	$ 1,170
Cash payment to acquire business	470
Liability incurred to pay for acquisition	$ 700
Acquisition transaction costs			$ 12	$ 4

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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