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ACQUISITIONS - Text (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
Business Acquisition [Line Items] |  |  |
Net revenue | $ 5,163 | $ 4,914 | $ 4,472
Net income | 1,071 | $ 316 | $ 684
Cash payment to acquire business | 107 |  |
ACEA Biosciences, Inc. [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Purchase price for acquisition | 250 |  |
BioTek [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Purchase price for acquisition | 1,170 |  |
Net revenue | 35 |  |
Net income | (12) |  |
Cash payment to acquire business | 470 |  |
Liability incurred to pay for acquisition | 700 |  |
Acquisition transaction costs | 4 |  |
Estimated costs to complete in-process research and development projects | $ 2 |  |

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