v3.7.0.1

Financial Instruments (Details) - USD ($) $ in Millions | Apr. 30, 2017 | Oct. 31, 2016
--- | --- | ---
Cash and Cash Equivalents [Line Items] |  |
Gross Unrealized Gain | $ 39 | $ 49
Gross Unrealized Loss | (12) | (16)
Debt securities: |  |
Cash and Cash Equivalents [Line Items] |  |
Gross Unrealized Gain | 38 | 49
Gross Unrealized Loss | (12) | (12)
Foreign bonds |  |
Cash and Cash Equivalents [Line Items] |  |
Gross Unrealized Gain | 38 | 49
Other debt securities |  |
Cash and Cash Equivalents [Line Items] |  |
Gross Unrealized Loss | (12) | (12)
Equity securities in public companies |  |
Cash and Cash Equivalents [Line Items] |  |
Gross Unrealized Gain | 1 | 0
Gross Unrealized Loss | 0 | (4)
Equity securities in public companies |  |
Cash and Cash Equivalents [Line Items] |  |
Gross Unrealized Gain | 1 | 0
Gross Unrealized Loss | 0 | (4)
Cost |  |
Cash and Cash Equivalents [Line Items] |  |
Cash Equivalents: | 5,280 | 10,519
Available-for-sale securities, Cost | 254 | 202
Total cash equivalents and available-for-sale investments | 5,534 | 10,721
Cost | Debt securities: |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Cost | 234 | 182
Cost | Time deposits |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Cost | 11 | 11
Cost | Foreign bonds |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Cost | 184 | 131
Cost | Other debt securities |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Cost | 39 | 40
Cost | Equity securities in public companies |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Cost | 20 | 20
Cost | Equity securities in public companies |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Cost | 20 | 20
Cost | Time deposits |  |
Cash and Cash Equivalents [Line Items] |  |
Cash Equivalents: | 2,435 | 4,024
Cost | Money market funds |  |
Cash and Cash Equivalents [Line Items] |  |
Cash Equivalents: | 2,845 | 6,495
Fair Value |  |
Cash and Cash Equivalents [Line Items] |  |
Cash Equivalents: | 5,280 | 10,519
Available-for-sale securities, Estimated Fair Value | 281 | 235
Total cash equivalents and available-for-sale investments | 5,561 | 10,754
Fair Value | Debt securities: |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Estimated Fair Value | 260 | 219
Fair Value | Time deposits |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Estimated Fair Value | 11 | 11
Fair Value | Foreign bonds |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Estimated Fair Value | 222 | 180
Fair Value | Other debt securities |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Estimated Fair Value | 27 | 28
Fair Value | Equity securities in public companies |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Estimated Fair Value | 21 | 16
Fair Value | Equity securities in public companies |  |
Cash and Cash Equivalents [Line Items] |  |
Available-for-sale securities, Estimated Fair Value | 21 | 16
Fair Value | Time deposits |  |
Cash and Cash Equivalents [Line Items] |  |
Cash Equivalents: | 2,435 | 4,024
Fair Value | Money market funds |  |
Cash and Cash Equivalents [Line Items] |  |
Cash Equivalents: | $ 2,845 | $ 6,495

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- Definition Amount of 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 and investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities. + References No definition available. + Details
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