OTHER COMPREHENSIVE INCOME ITEMS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Retirement benefits adjustment, after tax
Retirement benefits adjustment	$ (623.6)	$ (338.4)	$ 158.0
Cumulative translation adjustment	(270.0)	17.8	35.7
Unrealized gain (loss) on derivatives, after tax
Unrealized gain (loss) on derivatives	(5.1)	20.9	14.9
Unrealized gain (loss) on investments, after tax
Unrealized holding gain (loss) and net unrealized gain (loss) on investments	4.9	1.3	5.0
Deere & Company
Retirement benefits adjustment, before tax
Net actuarial losses and prior service cost	(1,341)	(989)	(213)
Reclassification of actuarial losses and prior service cost to net income	380	450	474
Retirement benefits adjustment	(961)	(539)	261
Cumulative translation adjustment	(272)	14	49
Unrealized gain (loss) on derivatives, before tax
Hedging gain (loss)	(61)	31	(56)
Reclassification of realized (gain) loss to net income	54	1	79
Unrealized gain (loss) on derivatives	(7)	32	23
Unrealized gain (loss) on investments, before tax
Unrealized holding gain (loss) and net unrealized gain (loss) on investments	7	2	8
Total other comprehensive income (loss), before tax amount	(1,233)	(491)	341
Retirement benefits adjustment, tax (expense) credit
Net actuarial losses and prior service cost	477	368	77
Reclassification of actuarial losses and prior service cost	(140)	(167)	(180)
Retirement benefits adjustment	337	201	(103)
Cumulative translation adjustment	2	4	(13)
Unrealized (gain) loss on derivatives, tax (expense) credit
Hedging gain (loss)	21	(11)	19
Reclassification of realized (gain) loss to net income	(19)		(27)
Unrealized gain (loss) on derivatives	2	(11)	(8)
Unrealized gain (loss) on investments, tax (expense) credit
Unrealized holding gain (loss) and net unrealized gain (loss) on investments	(2)	(1)	(3)
Total other comprehensive income (loss), tax (expense) credit	339	193	(127)
Retirement benefits adjustment, after tax
Net actuarial losses and prior service cost	(864)	(621)	(136)
Reclassification of actuarial losses and prior service cost	240	283	294
Retirement benefits adjustment	(624.0)	(338.0)	158.0
Cumulative translation adjustment	(270.0)	18.0	36.0
Unrealized gain (loss) on derivatives, after tax
Hedging gain (loss)	(40)	20	(37)
Reclassification of realized (gain) loss to net income	35	1	52
Unrealized gain (loss) on derivatives	(5.0)	21.0	15.0
Unrealized gain (loss) on investments, after tax
Unrealized holding gain (loss) and net unrealized gain (loss) on investments	5.0	1.0	5.0
Total other comprehensive income (loss), after tax amount	$ (894)	$ (298)	$ 214