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SUPPLEMENT CASH FLOW INFORMATION (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Apr. 30, 2019 | Apr. 30, 2018
Other Significant Noncash Transactions [Line Items] |  |
Increase (decrease) in capital expenditure incurred but not yet paid | $ 7 | $ (9)
Unsettled treasury repurchase trade | (1) | (12)
Accounts Payable [Member] |  |
Other Significant Noncash Transactions [Line Items] |  |
Increase (decrease) in capital expenditure incurred but not yet paid | 7 | (9)
Other Accrued Liabilities [Member] |  |
Other Significant Noncash Transactions [Line Items] |  |
Unsettled treasury repurchase trade | $ (1) | $ (12)

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- Details
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