DISPOSITION - WATER OPERATIONS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 30, 2014
Major Classes of Assets and Liabilities
Total assets held for sale	$ 84.7
Total liabilities held for sale	49.8
Water Operations | Disposal Group
Dispositions
Non-cash charge in other operating expenses for an impairment to write-down assets held for sale to realizable value, pretax	36
Non-cash charge in other operating expenses for an impairment to write-down assets held for sale to realizable value, after-tax	4
Major Classes of Assets and Liabilities
Trade accounts and notes receivable - net	57
Other receivables	10
Inventories	49
Other assets	5
Asset impairment	(36)
Total assets held for sale	85.0
Accounts payable and accrued expenses	47
Retirement benefits and other liabilities	3
Total liabilities held for sale	$ 50.0