SUPPLEMENTAL CONSOLIDATING DATA (Condensed Balance Sheet) (Details 2) (USD $) In Millions, except Share data, unless otherwise specified	Apr. 30, 2012	Oct. 31, 2011	Apr. 30, 2011	Oct. 31, 2010
Assets
Cash and cash equivalents	$ 3,019.8	$ 3,647.2	$ 3,949.8	$ 3,790.6
Marketable securities	1,338.9	787.3	239.5
Receivables from unconsolidated subsidiaries and affiliates	66.9	48.0	45.1
Trade accounts and notes receivable - net	5,039.2	3,294.5	4,157.4
Financing receivables - net	19,452.7	19,923.5	18,455.4
Financing receivables securitized - net	3,116.0	2,905.0	2,871.2
Other receivables	1,089.2	1,330.6	828.6
Equipment on operating leases - net	2,168.0	2,150.0	1,945.2
Inventories	6,112.4	4,370.6	4,687.0
Property and equipment - net	4,387.6	4,352.3	3,968.5
Investments in unconsolidated subsidiaries and affiliates	233.7	201.7	220.9
Goodwill	965.3	999.8	1,038.7	999.0
Other intangible assets - net	114.2	127.4	130.7
Retirement benefits	30.3	30.4	200.8
Deferred income taxes	2,944.6	2,858.6	2,825.8
Other assets	1,326.5	1,180.5	1,020.9
Total Assets	51,405.3	48,207.4	46,585.5
Liabilities and Stockholders' Equity
Short-term borrowings	7,910.0	6,852.3	7,071.9
Short-term securitization borrowings	3,033.3	2,777.4	2,821.5
Payables to unconsolidated subsidiaries and affiliates	189.6	117.7	193.5
Accounts payable and accrued expenses	7,631.4	7,804.8	6,777.2
Deferred income taxes	164.8	168.3	162.6
Long-term borrowings	18,719.4	16,959.9	16,192.2
Retirement benefits and other liabilities	6,360.8	6,712.1	5,933.0
Total liabilities	44,009.3	41,392.5	39,151.9
Commitments and contingencies (Note 14)
Common stock, $1 par value (issued shares at April 30, 2012 - 536,431,204)	3,298.9	3,251.7	3,211.7
Common stock, issued shares	536,431,204
Common stock, par value (in dollars per share)	$ 1	$ 1	$ 1
Common stock in treasury	(8,005.1)	(7,292.8)	(6,237.5)
Retained earnings	15,759.4	14,519.4	13,476.3
Accumulated other comprehensive income (loss)	(3,674.3)	(3,678.0)	(3,027.2)
Total Deere & Company stockholders' equity	7,378.9	6,800.3	7,423.3
Noncontrolling interests	17.1	14.6	10.3
Total stockholders' equity	7,396.0	6,814.9	7,433.6	6,303.4
Total Liabilities and Stockholders' Equity	51,405.3	48,207.4	46,585.5
Equipment Operations
Assets
Cash and cash equivalents	1,700.4	3,187.5	3,515.0	3,348.3
Marketable securities	1,002.8	502.6
Receivables from unconsolidated subsidiaries and affiliates	2,192.4	1,713.4	1,785.7
Trade accounts and notes receivable - net	1,258.0	1,093.9	1,066.3
Financing receivables - net	14.0	14.0	8.9
Other receivables	790.8	965.6	715.1
Inventories	6,112.4	4,370.6	4,687.0
Property and equipment - net	4,324.3	4,287.5	3,902.0
Investments in unconsolidated subsidiaries and affiliates	3,695.3	3,473.9	3,381.5
Goodwill	965.3	999.8	1,038.7
Other intangible assets - net	110.2	123.4	126.8
Retirement benefits	29.7	29.6	200.0
Deferred income taxes	3,137.9	3,052.8	2,917.7
Other assets	553.9	468.6	446.4
Total Assets	25,887.4	24,283.2	23,791.1
Liabilities and Stockholders' Equity
Short-term borrowings	1,592.0	528.5	431.6
Payables to unconsolidated subsidiaries and affiliates	189.6	117.7	193.5
Accounts payable and accrued expenses	7,109.9	6,869.3	6,355.3
Deferred income taxes	96.5	99.0	102.8
Long-term borrowings	3,174.9	3,167.1	3,361.4
Retirement benefits and other liabilities	6,328.5	6,686.7	5,912.9
Total liabilities	18,491.4	17,468.3	16,357.5
Common stock, $1 par value (issued shares at April 30, 2012 - 536,431,204)	3,298.9	3,251.7	3,211.7
Common stock in treasury	(8,005.1)	(7,292.8)	(6,237.5)
Retained earnings	15,759.4	14,519.4	13,476.3
Accumulated other comprehensive income (loss)	(3,674.3)	(3,678.0)	(3,027.2)
Total Deere & Company stockholders' equity	7,378.9	6,800.3	7,423.3
Noncontrolling interests	17.1	14.6	10.3
Total stockholders' equity	7,396.0	6,814.9	7,433.6
Total Liabilities and Stockholders' Equity	25,887.4	24,283.2	23,791.1
Financial Services
Assets
Cash and cash equivalents	1,319.3	459.7	434.8	442.3
Marketable securities	336.1	284.7	239.5
Trade accounts and notes receivable - net	4,619.6	2,807.2	3,786.2
Financing receivables - net	19,438.7	19,909.5	18,446.4
Financing receivables securitized - net	3,116.0	2,905.0	2,871.2
Other receivables	306.0	370.1	120.8
Equipment on operating leases - net	2,168.0	2,150.0	1,945.2
Property and equipment - net	63.3	64.9	66.5
Investments in unconsolidated subsidiaries and affiliates	8.3	8.1	8.1
Other intangible assets - net	4.0	4.0	4.0
Retirement benefits	26.2	28.0	29.9
Deferred income taxes	52.1	91.2	103.8
Other assets	773.3	712.6	574.6
Total Assets	32,230.9	29,795.0	28,631.0
Liabilities and Stockholders' Equity
Short-term borrowings	6,318.0	6,323.8	6,640.3
Short-term securitization borrowings	3,033.3	2,777.4	2,821.5
Payables to unconsolidated subsidiaries and affiliates	2,125.5	1,665.5	1,740.5
Accounts payable and accrued expenses	1,368.1	1,547.8	1,124.6
Deferred income taxes	313.8	354.7	255.5
Long-term borrowings	15,544.5	13,792.8	12,830.8
Retirement benefits and other liabilities	57.8	52.6	49.2
Total liabilities	28,761.0	26,514.6	25,462.4
Common stock, $1 par value (issued shares at April 30, 2012 - 536,431,204)	1,613.5	1,570.6	1,526.6
Retained earnings	1,726.3	1,541.5	1,439.7
Accumulated other comprehensive income (loss)	130.1	168.3	202.3
Total Deere & Company stockholders' equity	3,469.9	3,280.4	3,168.6
Total stockholders' equity	3,469.9	3,280.4	3,168.6
Total Liabilities and Stockholders' Equity	$ 32,230.9	$ 29,795.0	$ 28,631.0