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SUPPLEMENTAL CASH FLOW INFORMATION Non-cash investing activities (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
Other Significant Noncash Transactions [Line Items] |  |  |
Increase (decrease) in capital expenditure incurred but not yet paid | $ (3) | $ 10 | $ 0
Accounts Payable [Member] |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |
Increase (decrease) in capital expenditure incurred but not yet paid | (3) | 10 | (4)
Other Noncurrent Liabilities [Member] |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |
Increase (decrease) in capital expenditure incurred but not yet paid | $ 0 | $ 0 | $ 4

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