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FAIR VALUE MEASUREMENTS (Tables) | 9 Months Ended
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Jul. 31, 2016
Fair Value Disclosures [Abstract] |
Fair Value Assets And Liabilities Measured On Recurring Basis | Financial assets and liabilities measured at fair value on a recurring basis as of July 31, 2016 and October 31, 2015 were as follows:
| Fair Value Measurements at July 31, 2016 |  | Fair Value Measurements at October 31, 2015
| Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3
| (in millions)
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents (money market funds) | $ | 482 |  |  | $ | 482 |  |  | $ | — |  |  | $ | — |  |  | $ | 295 |  |  | $ | 295 |  |  | $ | — |  |  | $ | — |
Derivative instruments (foreign exchange contracts) | 3 |  |  | — |  |  | 3 |  |  | — |  |  | 1 |  |  | — |  |  | 1 |  |  | — |
Long-term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trading securities | 12 |  |  | 12 |  |  | — |  |  | — |  |  | 12 |  |  | 12 |  |  | — |  |  | — |
Available-for-sale investments | 28 |  |  | 28 |  |  | — |  |  | — |  |  | 41 |  |  | 41 |  |  | — |  |  | — |
Total assets measured at fair value | $ | 525 |  |  | $ | 522 |  |  | $ | 3 |  |  | $ | — |  |  | $ | 349 |  |  | $ | 348 |  |  | $ | 1 |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative instruments (foreign exchange contracts) | $ | 8 |  |  | $ | — |  |  | $ | 8 |  |  | $ | — |  |  | $ | 10 |  |  | $ | — |  |  | $ | 10 |  |  | $ | — |
Long-term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred compensation liability | 12 |  |  | — |  |  | 12 |  |  | — |  |  | 12 |  |  | — |  |  | 12 |  |  | — |
Total liabilities measured at fair value | $ | 20 |  |  | $ | — |  |  | $ | 20 |  |  | $ | — |  |  | $ | 22 |  |  | $ | — |  |  | $ | 22 |  |  | $ | — |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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