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SPECIAL ITEMS (Details) - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Oct. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Long-lived Asset Impairment
Non-cash charge for impairment of long-lived assets, pretax						$ 34.8	$ 95.9	$ 102.0
Water Operations | Disposal Group
Long-lived Asset Impairment
Non-cash charge for impairment of long-lived assets, pretax				$ 7.0	$ 50.0		62.0	57.0
Non-cash charge for impairment of long-lived assets, after-tax				$ 7.0	$ 44.0		$ 30.0	51.0
Water Operations | Cost of Sales | Disposal Group
Long-lived Asset Impairment
Non-cash charge for impairment of long-lived assets, pretax			$ 26.0					50.0
Non-cash charge for impairment of long-lived assets, after-tax			$ 26.0
Water Operations | Selling, Administrative, and General Expenses | Disposal Group
Long-lived Asset Impairment
Non-cash charge for impairment of long-lived assets, pretax								$ 7.0
Water Operations | Other Operating Expense | Disposal Group
Long-lived Asset Impairment
Non-cash charge for impairment of long-lived assets, pretax		$ 36.0
Non-cash charge for impairment of long-lived assets, after-tax		$ 4.0
Agriculture and Turf | Cost of Sales
Long-lived Asset Impairment
Non-cash charge for impairment of long-lived assets, pretax	$ 18.0
Non-cash charge for impairment of long-lived assets, after-tax	18.0
Non-cash charge for impairment of other assets, pretax	16.0
Non-cash charge for impairment of other assets, after-tax	$ 16.0

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