INVESTMENTS (Details) - USD ($) $ in Millions |
Apr. 30, 2017 |
Oct. 31, 2016 |
|---|---|---|
| Short-term Investments [Abstract] | ||
| Available-for-sale Securities, Current | $ 40 | $ 0 |
| Short-term Investments | 40 | 0 |
| Long-term Investments [Abstract] | ||
| Cost Method Investments | 16 | 15 |
| Trading securities | 12 | 11 |
| Available-for-sale Securities, Noncurrent | 32 | 29 |
| Long-term Investments | $ 60 | $ 55 |