SPECIAL ITEM (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Oct. 31, 2012	Oct. 31, 2010	Oct. 31, 2012	Oct. 31, 2010
Goodwill Impairment
Non-cash charge in cost of sales for the impairment of goodwill, pretax			$ 33.4	$ 27.2
Agriculture and Turf
Goodwill Impairment
Non-cash charge in cost of sales for the impairment of goodwill, pretax			33.0
John Deere Water Reporting Unit
Goodwill Impairment
Non-cash charge in cost of sales for the impairment of goodwill, pretax	33.0	27.0	33.0	27.0
Non-cash charge in cost of sales for the impairment of goodwill, net of tax	$ 31	$ 25	$ 31	$ 25