SUPPLEMENT CASH FLOW INFORMATION (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Apr. 30, 2017 |
Apr. 30, 2016 |
|
| Other Significant Noncash Transactions [Line Items] | ||
| Capital Expenditures Incurred but Not yet Paid | $ (3) | $ (13) |
| Accounts Payable [Member] | ||
| Other Significant Noncash Transactions [Line Items] | ||
| Capital Expenditures Incurred but Not yet Paid | (5) | (13) |
| Other Noncurrent Liabilities [Member] | ||
| Other Significant Noncash Transactions [Line Items] | ||
| Capital Expenditures Incurred but Not yet Paid | $ 2 | $ 0 |