SUPPLEMENTAL INFORMATION (UNAUDITED) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2012 stockholders	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2011	Oct. 31, 2012 stockholders	Oct. 31, 2011	Oct. 31, 2010
Market price
High (in dollars per share)	$ 86.86	$ 83.43	$ 89.05	$ 87.99	$ 80.82	$ 97.39	$ 99.24	$ 90.99	$ 86.86	$ 80.82
Low (in dollars per share)	$ 73.81	$ 70.59	$ 76.51	$ 71.92	$ 61.72	$ 78.51	$ 86.91	$ 74.70	$ 73.81	$ 61.72
Number of holders of record of the company's $1 par value common stock	25,669								25,669
Common stock, par value (in dollars per share)	$ 1				$ 1				$ 1	$ 1
Quarterly information with respect to net sales and revenues and earnings
Net sales and revenues	$ 9,792.0	$ 9,590.0	$ 10,009.0	$ 6,766.0	$ 8,612.0	$ 8,372.0	$ 8,910.0	$ 6,119.0	$ 36,157.1	$ 32,012.5	$ 26,004.6
Net sales	9,047.0	8,930.0	9,405.0	6,119.0	7,903.0	7,722.0	8,327.0	5,514.0	33,500.9	29,466.1	23,573.2
Gross profit	2,206	2,174	2,570	1,543	1,977	1,929	2,221	1,420
Income before income taxes	1,122.0	1,215.0	1,597.0	800.0	1,057.0	1,079.0	1,341.0	746.0	4,734.4	4,222.8	3,025.2
Net income attributable to Deere & Company	$ 688.0	$ 788.0	$ 1,056.0	$ 533.0	$ 670.0	$ 712.0	$ 904.0	$ 514.0	$ 3,064.7	$ 2,799.9	$ 1,865.0
Per Share Data
Basic (in dollars per share)	$ 1.76	$ 2.00	$ 2.64	$ 1.32	$ 1.63	$ 1.71	$ 2.15	$ 1.22	$ 7.72	$ 6.71	$ 4.40
Diluted (in dollars per share)	$ 1.75	$ 1.98	$ 2.61	$ 1.30	$ 1.62	$ 1.69	$ 2.12	$ 1.20	$ 7.63	$ 6.63	$ 4.35
Dividends declared (in dollars per share)	$ 0.46	$ 0.46	$ 0.46	$ 0.41	$ 0.41	$ 0.41	$ 0.35	$ 0.35	$ 1.79	$ 1.52	$ 1.16
Dividends paid (in dollars per share)	$ 0.46	$ 0.46	$ 0.41	$ 0.41	$ 0.41	$ 0.35	$ 0.35	$ 0.30