Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Jul. 31, 2014	Oct. 31, 2013	Jul. 31, 2013
Fair Values of Financial Instruments
Securitization borrowings	$ 4,142.8	$ 4,109.1	$ 3,780.1
Current maturities of long-term borrowings	4,255.4	3,602.2	3,741.4
Long-term borrowings	16,367.4	14,195.1	14,218.7
Fair Value, Level 2
Fair Values of Financial Instruments
Securitization borrowings	4,145.0	4,113.0	3,778.0
Current maturities of long-term borrowings	4,271.0	3,623.0	3,779.0
Long-term borrowings	16,576.0	14,331.0	14,346.0
Fair Value, Level 3
Fair Values of Financial Instruments
Receivables financed - net	26,910	24,459	24,434
Retail notes securitized - net	4,222	4,124	3,868
Carrying Value
Fair Values of Financial Instruments
Receivables financed - net	27,033	24,569	24,531
Retail notes securitized - net	4,264	4,153	3,891
Securitization borrowings	4,143.0	4,109.0	3,780.0
Current maturities of long-term borrowings	4,255.0	3,602.0	3,741.0
Long-term borrowings	$ 16,367.0	$ 14,195.0	$ 14,219.0