EARNINGS PER SHARE (Details) (USD $) In Millions, except Per Share data	3 Months Ended		9 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2011	Jul. 31, 2010
EARNINGS PER SHARE
Net income attributable to Deere & Company (in dollars)	$ 712.3	$ 617.0	$ 2,130.3	$ 1,407.7
Less income allocable to participating securities (in dollars)	0.3	0.2	0.8	0.5
Income allocable to common stock (in dollars)	$ 712.0	$ 616.8	$ 2,129.5	$ 1,407.2
Average shares outstanding (in shares)	417.4	424.5	419.9	424.1
Basic per share (in dollars per share)	$ 1.71	$ 1.45	$ 5.07	$ 3.32
Diluted Earnings Per Share
Average shares outstanding (in shares)	417.4	424.5	419.9	424.1
Effect of dilutive share-based compensation (in shares)	4.6	4.5	5.3	4.3
Total potential shares outstanding (in shares)	422.0	429.0	425.2	428.4
Diluted per share (in dollars per share)	$ 1.69	$ 1.44	$ 5.01	$ 3.28
Antidilutive incremental shares related to share-based compensation excluded from computation of earnings per share (in shares)	3.9	1.9		1.9