Fair Value Measurements (Details 3) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014	Oct. 31, 2014
Assets and liabilities measured at fair value
Total Receivables - net	$ 30,262.9	$ 31,296.9	$ 30,262.9	$ 31,296.9	$ 30,393.5
Fair Value, Nonrecurring Measurements | Level 3
Assets and liabilities measured at fair value
Total Receivables - net	3.8	101.9	3.8	101.9	5.3
(Gains) losses on fair value of receivables	(1.2)	10.1	(1.2)	8.2
Fair Value, Nonrecurring Measurements | Level 3 | Retail notes
Assets and liabilities measured at fair value
Total Receivables - net	3.8	12.2	3.8	12.2	$ 5.3
(Gains) losses on fair value of receivables	(1.0)	1.5	(1.0)	1.5
Fair Value, Nonrecurring Measurements | Level 3 | Operating loans
Assets and liabilities measured at fair value
Total Receivables - net		6.9		6.9
(Gains) losses on fair value of receivables				(1.9)
Fair Value, Nonrecurring Measurements | Level 3 | Revolving charge accounts
Assets and liabilities measured at fair value
(Gains) losses on fair value of receivables	$ (0.2)	0.2	$ (0.2)	0.2
Fair Value, Nonrecurring Measurements | Level 3 | Wholesale receivables
Assets and liabilities measured at fair value
Total Receivables - net		82.8		82.8
(Gains) losses on fair value of receivables		$ 8.4		$ 8.4