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FAIR VALUE MEASUREMENTS, Fair value of assets and liabilities measured on a recurring basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions | Jul. 31, 2019 | Oct. 31, 2018
--- | --- | ---
Assets Short - term |  |
Cash equivalents (money market funds) | $ 983 | $ 1,355
Derivative instruments (foreign exchange contracts) | 10 | 16
Assets, Long-term |  |
Trading securities | 30 | 30
Other investments | 24 |
Total assets measured at fair value | 1,047 | 1,401
Liabilities, Short-term |  |
Derivative instruments (foreign exchange contracts) | 5 | 5
Liabilities Long-term |  |
Deferred compensation liability | 30 | 30
Total liabilities measured at fair value | 35 | 35
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets Short - term |  |
Cash equivalents (money market funds) | 983 | 1,355
Derivative instruments (foreign exchange contracts) | 0 | 0
Assets, Long-term |  |
Trading securities | 30 | 30
Other investments | 0 |
Total assets measured at fair value | 1,013 | 1,385
Liabilities, Short-term |  |
Derivative instruments (foreign exchange contracts) | 0 | 0
Liabilities Long-term |  |
Deferred compensation liability | 0 | 0
Total liabilities measured at fair value | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Assets Short - term |  |
Cash equivalents (money market funds) | 0 | 0
Derivative instruments (foreign exchange contracts) | 10 | 16
Assets, Long-term |  |
Trading securities | 0 | 0
Other investments | 24 |
Total assets measured at fair value | 34 | 16
Liabilities, Short-term |  |
Derivative instruments (foreign exchange contracts) | 5 | 5
Liabilities Long-term |  |
Deferred compensation liability | 30 | 30
Total liabilities measured at fair value | 35 | 35
Significant Unobservable Inputs (Level 3) |  |
Assets Short - term |  |
Cash equivalents (money market funds) | 0 | 0
Derivative instruments (foreign exchange contracts) | 0 | 0
Assets, Long-term |  |
Trading securities | 0 | 0
Other investments | 0 |
Total assets measured at fair value | 0 | 0
Liabilities, Short-term |  |
Derivative instruments (foreign exchange contracts) | 0 | 0
Liabilities Long-term |  |
Deferred compensation liability | 0 | 0
Total liabilities measured at fair value | $ 0 | $ 0

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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