The loss (gain) resulting from the write-down of the carrying value of assets classified as a disposal group, but one which is not further classified as a discontinued operation, to fair value less cost to sell. A (gain) results from a subsequent increase in fair value less cost to sell, but not in excess of the cumulative loss previously recognized. For example, the write-down of a disposal group subject to a plan of sale, which was not sold in the current period, to its held-for-sale value. The loss (gain) is included in income from continuing operations before income taxes in the income statement.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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FAIR VALUE MEASUREMENTS (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Oct. 31, 2012	Jan. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2012
Water Operations
Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis
Goodwill impairment charges	$ 33
Water Operations \| Cost of Sales
Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis
Losses, Property and equipment - net		26	50
Fair Value, Nonrecurring Measurements \| Level 3
Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis
Property and equipment - net			36	53
Losses, Property and equipment - net			48	44
Goodwill impairment charges					33
Losses, Other intangible assets - net			9
Other assets				15
Losses, Other assets				16
Fair Value, Nonrecurring Measurements \| Level 3 \| Water Operations
Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis
Losses, Assets held for sale - Water operations				$ 36