DISCONTINUED OPERATIONS - Statement of Operations (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Oct. 31, 2017 |
Oct. 31, 2016 |
Oct. 31, 2015 |
|
| Discontinued Operations and Disposal Groups [Abstract] | |||
| Net revenue | $ 0 | ||
| Cost and expenses | 39 | ||
| Operating loss | (39) | ||
| Other income (expense), net | 0 | ||
| Loss from discontinued operations before tax | (39) | ||
| Benefit for income taxes | (2) | ||
| Net loss from discontinued operations | $ 0 | $ 0 | $ (37) |