v3.6.0.2

Financial Instruments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2016 | Oct. 31, 2015 | Oct. 31, 2014
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Gross Unrealized Gains | $ 69 | $ 76 |
Available-for-sale securities, Gross Unrealized Losses | (16) | (22) |
Interest income | 122 | 54 | $ 64
Debt securities |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Gross Unrealized Gains | 69 | 69 |
Available-for-sale securities, Gross Unrealized Losses | (12) | (13) |
Gross unrealized loss of debt security in a continuous loss position for more than 12 months | 12 | 13 |
Foreign bonds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Gross Unrealized Gains | 69 | 69 |
Other debt securities |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Gross Unrealized Losses | (12) | (13) |
Equity-related investments |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Gross Unrealized Gains | 0 | 7 |
Available-for-sale securities, Gross Unrealized Losses | (4) | (9) |
Public equity securities |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Gross Unrealized Gains | 0 | 7 |
Available-for-sale securities, Gross Unrealized Losses | (4) | (9) |
Cost |  |  |
Cash equivalents and available-for-sale investments |  |  |
Cash equivalents | 10,623 | 7,132 |
Available-for-sale securities, Cost | 297 | 531 |
Total cash equivalents and available-for-sale investments | 10,920 | 7,663 |
Cost | Debt securities |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Cost | 276 | 403 |
Cost | Time deposits |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Cost | 11 | 106 |
Cost | Foreign bonds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Cost | 218 | 244 |
Cost | Other debt securities |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Cost | 47 | 53 |
Cost | Equity-related investments |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Cost | 21 | 128 |
Cost | Mutual funds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Cost | 0 | 73 |
Cost | Public equity securities |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Cost | 21 | 55 |
Cost | Time deposits |  |  |
Cash equivalents and available-for-sale investments |  |  |
Cash equivalents | 4,074 | 2,367 |
Cost | Money market funds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Cash equivalents | 6,549 | 4,592 |
Cost | Mutual funds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Cash equivalents | 0 | 173 |
Fair Value |  |  |
Cash equivalents and available-for-sale investments |  |  |
Cash equivalents | 10,623 | 7,132 |
Available-for-sale securities, Estimated Fair Value | 350 | 585 |
Total cash equivalents and available-for-sale investments | 10,973 | 7,717 |
Fair Value | Debt securities |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Estimated Fair Value | 333 | 459 |
Fair Value | Time deposits |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Estimated Fair Value | 11 | 106 |
Fair Value | Foreign bonds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Estimated Fair Value | 287 | 313 |
Fair Value | Other debt securities |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Estimated Fair Value | 35 | 40 |
Fair Value | Equity-related investments |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Estimated Fair Value | 17 | 126 |
Fair Value | Mutual funds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Estimated Fair Value | 0 | 73 |
Fair Value | Public equity securities |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Estimated Fair Value | 17 | 53 |
Fair Value | Time deposits |  |  |
Cash equivalents and available-for-sale investments |  |  |
Cash equivalents | 4,074 | 2,367 |
Fair Value | Money market funds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Cash equivalents | 6,549 | 4,592 |
Fair Value | Mutual funds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Cash equivalents | 0 | $ 173 |
MphasiS | Cost | Time deposits |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Cost | 41 |  |
MphasiS | Cost | Foreign bonds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Cost | 37 |  |
MphasiS | Cost | Mutual funds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Available-for-sale securities, Cost | 118 |  |
MphasiS | Cost | Time deposits |  |  |
Cash equivalents and available-for-sale investments |  |  |
Cash equivalents | 33 |  |
MphasiS | Cost | Mutual funds |  |  |
Cash equivalents and available-for-sale investments |  |  |
Cash equivalents | $ 214 |  |

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