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FAIR VALUE MEASUREMENTS (Details 4) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Jan. 31, 2014
Oct. 31, 2014
Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis    
Losses, Property and equipment - net $ 26.3us-gaap_AssetImpairmentCharges  
Fair Value, Nonrecurring Measurements | Level 3    
Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis    
Property and equipment - net   53us-gaap_PropertyPlantAndEquipmentFairValueDisclosure
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Losses, Property and equipment - net 26.0us-gaap_AssetImpairmentCharges
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Other assets   15us-gaap_OtherAssetsFairValueDisclosure
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Fair Value, Nonrecurring Measurements | Level 3 | Water Operations | Cost of Sales    
Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis    
Non-cash charge for impairment of long-lived assets, pretax 26us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
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Non-cash charge for impairment of long-lived assets, after-tax $ 26de_ImpairmentOfLongLivedAssetsHeldForUseNetOfTax
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