SEGMENT REPORTING (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011	Oct. 31, 2011
Net Sales and Revenues
Total net sales	$ 9,404.6	$ 8,327.6	$ 15,523.6	$ 13,841.4
% Change - Net sales (as a percent)	13.00%		12.00%
Total	10,008.6	8,909.7	16,775.1	15,028.9
% Change - Revenues (as a percent)	12.00%		12.00%
Operating Profit (Loss)
Total operating profit (loss)	1,697	1,431	2,570	2,249
% Change - Operating profit (loss) (as a percent)	19.00%		14.00%
Net income (loss) attributable to Deere & Company	1,056.2	904.3	1,589.1	1,418.1
% Change - Net income (loss) attributable to Deere & Company (as a percent)	17.00%		12.00%
Operating Segments (Other)
Other reconciling items	(641)	(527)	(981)	(831)
% Change - Other reconciling items (as a percent)	22.00%		18.00%
Identifiable Assets
Total Assets	51,405.3	46,585.5	51,405.3	46,585.5	48,207.4
% Change - Identifiable assets (as a percent)			10.00%
Equipment Operations
Net Sales and Revenues
Total net sales	9,404.6	8,327.6	15,523.6	13,841.4
Total	9,553.9	8,455.4	15,807.0	14,098.6
Operating Profit (Loss)
Net income (loss) attributable to Deere & Company	1,056.2	904.3	1,589.1	1,418.1
Identifiable Assets
Total Assets	25,887.4	23,791.1	25,887.4	23,791.1	24,283.2
Equipment Operations | Outside U.S. and Canada:
Net Sales and Revenues
Total net sales	3,606.0	3,403.0	6,134.0	5,496.0
% Change - Net sales (as a percent)	6.00%		12.00%
Operating Profit (Loss)
Total operating profit (loss)	233	334	402	548
% Change - Operating profit (loss) (as a percent)	(30.00%)		(27.00%)
Agriculture and Turf
Net Sales and Revenues
Total net sales	7,735.0	6,999.0	12,459.0	11,369.0
% Change - Net sales (as a percent)	11.00%		10.00%
Operating Profit (Loss)
Total operating profit (loss)	1,403	1,163	1,977	1,720
% Change - Operating profit (loss) (as a percent)	21.00%		15.00%
Identifiable Assets
Total Assets	10,945.0	9,331.0	10,945.0	9,331.0
% Change - Identifiable assets (as a percent)			17.00%
Intersegment sales and revenues	23	26	46	45
% Change - Intersegment sales and revenues (as a percent)	(12.00%)		2.00%
Construction and Forestry
Net Sales and Revenues
Total net sales	1,670.0	1,329.0	3,065.0	2,472.0
% Change - Net sales (as a percent)	26.00%		24.00%
Operating Profit (Loss)
Total operating profit (loss)	119	105	243	194
% Change - Operating profit (loss) (as a percent)	13.00%		25.00%
Identifiable Assets
Total Assets	3,228.0	2,654.0	3,228.0	2,654.0
% Change - Identifiable assets (as a percent)			22.00%
Intersegment sales and revenues		9	1	11
% Change - Intersegment sales and revenues (as a percent)			(91.00%)
Financial Services
Net Sales and Revenues
Total	488.0	491.0	1,036.0	998.0
% Change - Revenues (as a percent)	(1.00%)		4.00%
Operating Profit (Loss)
Total operating profit (loss)	175	163	350	335
% Change - Operating profit (loss) (as a percent)	7.00%		4.00%
Identifiable Assets
Total Assets	32,231.0	28,631.0	32,231.0	28,631.0
% Change - Identifiable assets (as a percent)			13.00%
Intersegment sales and revenues	66	58	119	107
% Change - Intersegment sales and revenues (as a percent)	14.00%		11.00%
Other Reconciling Items
Net Sales and Revenues
Total	116.0	91.0	215.0	190.0
% Change - Revenues (as a percent)	27.00%		13.00%
Operating Segments (Other)
% Change - Other reconciling items (as a percent)	22.00%		18.00%
Corporate
Identifiable Assets
Total Assets	$ 5,001.0	$ 5,970.0	$ 5,001.0	$ 5,970.0
% Change - Identifiable assets (as a percent)			(16.00%)