OVERVIEW, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Restricted Cash (Details) - USD ($) $ in Millions |
Apr. 30, 2017 |
Oct. 31, 2016 |
|---|---|---|
| Restricted Cash and Cash Equivalents Items [Line Items] | ||
| Restricted Cash and Cash Equivalents | $ 2 | $ 2 |
| Other Assets [Member] | ||
| Restricted Cash and Cash Equivalents Items [Line Items] | ||
| Restricted Cash and Cash Equivalents | $ 2 | 1 |
| Other Current Assets [Member] | ||
| Restricted Cash and Cash Equivalents Items [Line Items] | ||
| Restricted Cash and Cash Equivalents | $ 1 |