Fair Value Measurements - Nonrecurring, Level 3 Measurements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015	Oct. 31, 2015
Assets and liabilities measured at fair value
Receivables - net	$ 28,760.1	$ 30,262.9	$ 28,760.1	$ 30,262.9	$ 28,982.6
Equipment on operating leases - net	4,167.7	3,136.9	4,167.7	3,136.9	3,609.8
Fair Value, Nonrecurring Measurements | Level 3
Assets and liabilities measured at fair value
Equipment on operating leases - net					478.7
Losses, Equipment on operating leases - net			29.6
Other assets					96.2
Losses, Other assets			20.1
Total fair value	19.2	3.8	19.2	3.8	584.2
Total (gains) losses	1.3	(1.2)	52.8	(1.2)
Fair Value, Nonrecurring Measurements | Level 3 | Retail notes
Assets and liabilities measured at fair value
Receivables - net	10.1	3.8	10.1	3.8
(Gains) losses on fair value of receivables	1.3	(1.0)	2.9	(1.0)
Fair Value, Nonrecurring Measurements | Level 3 | Revolving charge accounts
Assets and liabilities measured at fair value
(Gains) losses on fair value of receivables		$ (0.2)		$ (0.2)
Fair Value, Nonrecurring Measurements | Level 3 | Wholesale receivables
Assets and liabilities measured at fair value
Receivables - net	$ 9.1		9.1		8.7
(Gains) losses on fair value of receivables			0.3
Fair Value, Nonrecurring Measurements | Level 3 | Financing leases
Assets and liabilities measured at fair value
Receivables - net					$ 0.6
(Gains) losses on fair value of receivables			$ (0.1)