INCOME TAXES - Current and long-term income tax assets and liabilities (Details) - USD ($) $ in Millions |
Oct. 31, 2017 |
Oct. 31, 2016 |
|---|---|---|
| Income Tax Disclosure [Abstract] | ||
| Current income tax assets (included within other current assets) | $ 77 | $ 83 |
| Long-term income tax assets (included within other assets) | 18 | 19 |
| Current income tax liabilities (included within other accrued liabilities) | 55 | 49 |
| Long-term income tax liabilities (included within other long-term liabilities) | 131 | 190 |
| Total | $ 91 | $ 137 |