Derivative Instruments (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended			9 Months Ended		12 Months Ended	9 Months Ended		12 Months Ended	3 Months Ended		9 Months Ended
	Jul. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Jul. 31, 2013 Derivative Instruments	Jul. 31, 2012 Derivative Instruments	Oct. 31, 2012 Derivative Instruments	Jul. 31, 2013 Derivative Instruments John Deere	Jul. 31, 2012 Derivative Instruments John Deere	Oct. 31, 2012 Derivative Instruments John Deere	Jul. 31, 2013 Interest Rate Contracts	Jul. 31, 2012 Interest Rate Contracts	Jul. 31, 2013 Interest Rate Contracts	Jul. 31, 2012 Interest Rate Contracts	Oct. 31, 2012 Interest Rate Contracts	Jul. 31, 2013 Cross-Currency Interest Rate Contracts	Oct. 31, 2012 Cross-Currency Interest Rate Contracts	Jul. 31, 2012 Cross-Currency Interest Rate Contracts
Derivative Instruments
Reduction in maximum loss if derivative counterparties fail to meet obligations - collateral received	$ 6	$ 36	$ 42
Reduction in maximum loss if derivative counterparties fail to meet obligations - netting provisions	45	63	67
Derivative instruments
Aggregate liability positions for derivatives with credit-risk-related contingent features				0	0	0
Maximum loss if derivative counterparties fail to meet obligations				172	251	230	95	370	341
Cash Flow Hedges
Notional amount of cash flow hedge derivatives										3,100	2,350	3,100	2,350	2,850	746	853	853
Cash flow hedge loss recorded in OCI to be reclassified within twelve months	5
Maximum maturity of cash flow hedge interest rate and cross-currency interest rate contracts	17 months
Gains or losses reclassified from OCI to earnings	0
Gain (Loss) on Fair Value Hedges
Gains (losses) on interest rate contracts										(286.8)	120.8	(286.6)	206.1
Net accrued interest income on interest rate contracts										36.1	36.2	111.2	110.7
Gains (losses) on borrowings										284.6	(117.0)	287.0	(210.5)
Accrued interest expense on borrowings										57.9	63.7	181.5	195.5
Fair Value Hedges
Notional amount of interest rate fair value hedge derivatives										6,848	7,168	6,848	7,168	8,688
Gain (Loss) on ineffective portion of interest rate fair value hedge derivatives										$ (2.0)	$ 4.0	$ 0.4	$ (4.0)