Fair Value Measurements (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Apr. 30, 2014	Apr. 30, 2014	Apr. 30, 2015	Oct. 31, 2014
Assets and liabilities measured at fair value
Total Receivables - net	$ 30,247.9	$ 30,247.9	$ 30,023.2	$ 30,393.5
Fair Value, Nonrecurring Measurements | Level 3
Assets and liabilities measured at fair value
Total Receivables - net	8.1	8.1	1.1	5.3
(Gains) losses on fair value of receivables	(1.9)	(1.9)
Fair Value, Nonrecurring Measurements | Level 3 | Retail notes
Assets and liabilities measured at fair value
Total Receivables - net			1.1	5.3
Fair Value, Nonrecurring Measurements | Level 3 | Operating loans
Assets and liabilities measured at fair value
Total Receivables - net	8.1	8.1
(Gains) losses on fair value of receivables	$ (1.9)	$ (1.9)