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INVESTMENTS (Tables) | 12 Months Ended
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Oct. 31, 2019
Investments, Debt and Equity Securities [Abstract] |
Equity Investments | The net book value of investments as of October 31, 2019 and 2018 was as follows:
| October 31,
| 2019 |  | 2018
| (in millions)
Long-Term |  |  |
Equity investments | $ | 37 |  |  | $ | 30 |
Equity investments - other | 9 |  |  | 16 |
Total | $ | 46 |  |  | $ | 46 |
Available-for-sale Securities | Net recognized gains (losses) on equity investments were as follows:
| Year Ended October 31,
| 2019 |  | 2018 |  | 2017
| (in millions)
Net realized gains on investments sold | $ | 1 |  |  | $ | — |  |  | $ | — |
Net unrealized gains on investments still held | 6 |  |  | — |  |  | 2 |

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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References No definition available. + Details
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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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