Allowance for Credit Losses and Credit Quality of Receivables (Details 6) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Dollars
Total write-offs	$ (55.9)	$ (45.7)	$ (31.4)
Total recoveries	22.6	20.2	22.5
Total net write-offs	$ (33.3)	$ (25.5)	$ (8.9)
Percent
Total write-offs (as a percent)	(0.19%)	(0.16%)	(0.12%)
Total recoveries (as a percent)	0.08%	0.07%	0.09%
Total net write-offs (as a percent)	(0.11%)	(0.09%)	(0.03%)
Retail notes
Dollars
Total write-offs	$ (17.8)	$ (12.7)	$ (9.4)
Total recoveries	$ 6.5	$ 5.5	$ 5.9
Percent
Total write-offs (as a percent)	(0.10%)	(0.07%)	(0.06%)
Total recoveries (as a percent)	0.03%	0.03%	0.04%
Retail notes | Agriculture and turf
Dollars
Total write-offs	$ (9.5)	$ (6.1)	$ (4.3)
Total recoveries	$ 4.7	$ 3.3	$ 3.6
Percent
Total write-offs (as a percent)	(0.06%)	(0.04%)	(0.03%)
Total recoveries (as a percent)	0.03%	0.02%	0.03%
Retail notes | Construction and forestry
Dollars
Total write-offs	$ (8.3)	$ (6.6)	$ (5.1)
Total recoveries	$ 1.8	$ 2.2	$ 2.3
Percent
Total write-offs (as a percent)	(0.35%)	(0.33%)	(0.33%)
Total recoveries (as a percent)	0.08%	0.11%	0.15%
Revolving charge accounts
Dollars
Total write-offs	$ (36.2)	$ (24.6)	$ (19.8)
Total recoveries	$ 15.3	$ 14.3	$ 15.3
Percent
Total write-offs (as a percent)	(1.58%)	(1.11%)	(0.89%)
Total recoveries (as a percent)	0.68%	0.65%	0.69%
Wholesale receivables
Dollars
Total write-offs	$ (0.3)	$ (7.7)	$ (0.3)
Total recoveries	$ 0.6	$ 0.1	$ 0.2
Percent
Total write-offs (as a percent)	(0.00%)	(0.09%)	(0.00%)
Total recoveries (as a percent)	0.01%	0.00%	0.00%
Financing leases
Dollars
Total write-offs	$ (1.6)	$ (0.5)	$ (1.8)
Total recoveries	$ 0.2	$ 0.2	$ 0.5
Percent
Total write-offs (as a percent)	(0.29%)	(0.09%)	(0.34%)
Total recoveries (as a percent)	0.04%	0.04%	0.09%
Operating loans
Dollars
Total write-offs		$ (0.2)	$ (0.1)
Total recoveries		$ 0.1	$ 0.6
Percent
Total write-offs (as a percent)		(1.45%)	(0.25%)
Total recoveries (as a percent)		0.73%	1.50%