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FAIR VALUE MEASUREMENTS, Fair value of assets and liabilities measured on a recurring basis (Details) - USD ($) $ in Millions | Jan. 31, 2024 | Oct. 31, 2023 | Jan. 31, 2023 | Oct. 31, 2022
--- | --- | --- | --- | ---
Liabilities |  |  |  |
Contingent Consideration | $ 1 | $ 1 | $ 3 | $ 67
Fair Value, Measurements, Recurring |  |  |  |
Assets |  |  |  |
Total assets measured at fair value | 1,181 | 1,075 |  |
Liabilities |  |  |  |
Total liabilities measured at fair value | 49 | 39 |  |
Fair Value, Measurements, Recurring | Other Current Assets |  |  |  |
Assets |  |  |  |
Cash equivalents (money market funds) | 1,102 | 994 |  |
Derivative instruments (foreign exchange contracts) | 12 | 19 |  |
Fair Value, Measurements, Recurring | Other assets |  |  |  |
Assets |  |  |  |
Trading securities | 38 | 36 |  |
Other investments | 29 | 26 |  |
Fair Value, Measurements, Recurring | Other accrued liabilities |  |  |  |
Liabilities |  |  |  |
Derivative instruments (foreign exchange contracts) | 10 | 2 |  |
Contingent Consideration | 1 | 1 |  |
Fair Value, Measurements, Recurring | Other long-term liabilities |  |  |  |
Liabilities |  |  |  |
Deferred compensation liability | 38 | 36 |  |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Assets |  |  |  |
Total assets measured at fair value | 1,140 | 1,030 |  |
Liabilities |  |  |  |
Total liabilities measured at fair value | 0 | 0 |  |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Current Assets |  |  |  |
Assets |  |  |  |
Cash equivalents (money market funds) | 1,102 | 994 |  |
Derivative instruments (foreign exchange contracts) | 0 | 0 |  |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other assets |  |  |  |
Assets |  |  |  |
Trading securities | 38 | 36 |  |
Other investments | 0 | 0 |  |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other accrued liabilities |  |  |  |
Liabilities |  |  |  |
Derivative instruments (foreign exchange contracts) | 0 | 0 |  |
Contingent Consideration | 0 | 0 |  |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other long-term liabilities |  |  |  |
Liabilities |  |  |  |
Deferred compensation liability | 0 | 0 |  |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |  |  |
Assets |  |  |  |
Total assets measured at fair value | 41 | 45 |  |
Liabilities |  |  |  |
Total liabilities measured at fair value | 48 | 38 |  |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other Current Assets |  |  |  |
Assets |  |  |  |
Cash equivalents (money market funds) | 0 | 0 |  |
Derivative instruments (foreign exchange contracts) | 12 | 19 |  |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other assets |  |  |  |
Assets |  |  |  |
Trading securities | 0 | 0 |  |
Other investments | 29 | 26 |  |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other accrued liabilities |  |  |  |
Liabilities |  |  |  |
Derivative instruments (foreign exchange contracts) | 10 | 2 |  |
Contingent Consideration | 0 | 0 |  |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other long-term liabilities |  |  |  |
Liabilities |  |  |  |
Deferred compensation liability | 38 | 36 |  |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |  |  |
Assets |  |  |  |
Total assets measured at fair value | 0 | 0 |  |
Liabilities |  |  |  |
Total liabilities measured at fair value | 1 | 1 |  |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Other Current Assets |  |  |  |
Assets |  |  |  |
Cash equivalents (money market funds) | 0 | 0 |  |
Derivative instruments (foreign exchange contracts) | 0 | 0 |  |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Other assets |  |  |  |
Assets |  |  |  |
Trading securities | 0 | 0 |  |
Other investments | 0 | 0 |  |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Other accrued liabilities |  |  |  |
Liabilities |  |  |  |
Derivative instruments (foreign exchange contracts) | 0 | 0 |  |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Other accrued liabilities | Resolution Bioscience, Inc. |  |  |  |
Liabilities |  |  |  |
Contingent Consideration | 1 | 1 |  |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Other long-term liabilities |  |  |  |
Liabilities |  |  |  |
Deferred compensation liability | $ 0 | $ 0 |  |

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