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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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- Definition

Increase (decrease) in capital expenditure incurred but not yet paid

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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