Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Apr. 30, 2014	Oct. 31, 2013	Apr. 30, 2013
Fair Values of Financial Instruments
Securitization borrowings	$ 4,329.5	$ 4,109.1	$ 3,788.4
Current maturities of long-term borrowings	3,625.2	3,602.2	4,261.8
Long-term borrowings	15,546.3	14,195.1	14,141.6
Fair Value, Level 2
Fair Values of Financial Instruments
Securitization borrowings	4,333.0	4,113.0	3,794.0
Current maturities of long-term borrowings	3,640.0	3,623.0	4,320.0
Long-term borrowings	15,742.0	14,331.0	14,327.0
Fair Value, Level 3
Fair Values of Financial Instruments
Receivables financed - net	25,794	24,459	23,391
Retail notes securitized - net	4,308	4,124	3,785
Carrying Value
Fair Values of Financial Instruments
Receivables financed - net	25,903	24,569	23,430
Retail notes securitized - net	4,345	4,153	3,788
Securitization borrowings	4,330.0	4,109.0	3,788.0
Current maturities of long-term borrowings	3,625.0	3,602.0	4,262.0
Long-term borrowings	$ 15,546.0	$ 14,195.0	$ 14,142.0