Fair Value Measurements - Financial Instruments (Details) - USD ($) $ in Millions	Oct. 31, 2016	Oct. 31, 2015
Fair Values of Financial Instruments
Securitization borrowings	$ 5,002.5	$ 4,590.0
Current maturities of long-term borrowings	4,510.7	4,465.4
Long-term borrowings	16,568.9	16,980.5
Level 3
Fair Values of Financial Instruments
Receivables financed - net	22,429.5	24,126.5
Retail notes securitized - net	5,114.2	4,820.5
Level 2
Fair Values of Financial Instruments
Securitization borrowings	5,004.9	4,590.2
Current maturities of long-term borrowings	4,530.0	4,478.7
Long-term borrowings	16,724.5	17,007.6
Carrying Value
Fair Values of Financial Instruments
Receivables financed - net	22,476.3	24,148.0
Retail notes securitized - net	5,126.5	4,834.6
Securitization borrowings	5,002.5	4,590.0
Current maturities of long-term borrowings	4,510.7	4,465.4
Long-term borrowings	$ 16,568.9	$ 16,980.5