SPECIAL ITEMS (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended	3 Months Ended
	Oct. 31, 2012	Oct. 31, 2012 Water Operations
Goodwill Impairment
Non-cash charge in cost of sales for the impairment of goodwill, pretax	$ 33	$ 33
Non-cash charge in cost of sales for the impairment of goodwill, after-tax		$ 31