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MARKETABLE SECURITIES (Tables) | 12 Months Ended
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Oct. 31, 2016
MARKETABLE SECURITIES |
Amortized Cost and Fair Value of Marketable Securities | The amortized cost and fair value of marketable securities at October 31 in millions of dollars follow:
|  |  |  |  | Gross |  | Gross |  |  |  |
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair |
|  | Cost |  | Gains |  | Losses |  | Value |
2016 |  |  |  |  |  |  |  |  |  |  |  |  |
Equity fund |  | $ | 40 |  | $ | 5 |  |  |  |  | $ | 45 |
Fixed income fund |  |  | 15 |  |  |  |  |  |  |  |  | 15 |
U.S. government debt securities |  |  | 85 |  |  | 3 |  |  |  |  |  | 88 |
Municipal debt securities |  |  | 41 |  |  | 2 |  |  |  |  |  | 43 |
Corporate debt securities |  |  | 113 |  |  | 5 |  |  |  |  |  | 118 |
International debt securities |  |  | 39 |  |  |  |  | $ | 5 |  |  | 34 |
Mortgage-backed securities* |  |  | 109 |  |  | 2 |  |  |  |  |  | 111 |
Marketable securities |  | $ | 442 |  | $ | 17 |  | $ | 5 |  | $ | 454 |
2015 |  |  |  |  |  |  |  |  |  |  |  |  |
Equity fund |  | $ | 38 |  | $ | 5 |  |  |  |  | $ | 43 |
U.S. government debt securities |  |  | 79 |  |  | 3 |  |  |  |  |  | 82 |
Municipal debt securities |  |  | 29 |  |  | 2 |  |  |  |  |  | 31 |
Corporate debt securities |  |  | 121 |  |  | 4 |  | $ | 1 |  |  | 124 |
International debt securities |  |  | 48 |  |  |  |  |  | 1 |  |  | 47 |
Mortgage-backed securities* |  |  | 108 |  |  | 3 |  |  | 1 |  |  | 110 |
Marketable securities |  | $ | 423 |  | $ | 17 |  | $ | 3 |  | $ | 437 |
* Primarily issued by U.S. government sponsored enterprises.
Contractual Maturities of Debt Securities | The contractual maturities of debt securities at October 31, 2016 in millions of dollars follow:
|  | Amortized |  | Fair |
|  | Cost |  | Value |
Due in one year or less |  | $ | 35 |  | $ | 34 |
Due after one through five years |  |  | 104 |  |  | 103 |
Due after five through 10 years |  |  | 87 |  |  | 91 |
Due after 10 years |  |  | 52 |  |  | 55 |
Mortgage-backed securities |  |  | 109 |  |  | 111 |
Debt securities |  | $ | 387 |  | $ | 394 |

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