Fair Value Measurements (Details) - USD ($) $ in Millions	Apr. 30, 2016	Oct. 31, 2015	Apr. 30, 2015
Fair Values of Financial Instruments
Securitization borrowings	$ 4,641.8	$ 4,590.0	$ 4,702.7
Current maturities of long-term borrowings	4,505.6	4,465.4	4,063.7
Long-term borrowings	17,468.6	16,980.5	16,561.4
Level 3
Fair Values of Financial Instruments
Receivables financed - net	24,432.8	24,126.5	25,252.7
Retail notes securitized - net	4,723.4	4,820.5	4,716.0
Level 2
Fair Values of Financial Instruments
Securitization borrowings	4,641.8	4,590.2	4,706.9
Current maturities of long-term borrowings	4,528.2	4,478.7	4,069.3
Long-term borrowings	17,625.9	17,007.6	16,756.5
Carrying Value
Fair Values of Financial Instruments
Receivables financed - net	24,476.3	24,148.0	25,282.1
Retail notes securitized - net	4,734.7	4,834.6	4,741.1
Securitization borrowings	4,641.8	4,590.0	4,702.7
Current maturities of long-term borrowings	4,505.6	4,465.4	4,063.7
Long-term borrowings	$ 17,468.6	$ 16,980.5	$ 16,561.4