Fair Value Measurements - Nonrecurring, Level 3 Measurements (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Assets and liabilities measured at fair value
Equipment on operating leases - net	$ 4,396.2	$ 3,609.8
Losses, Equipment on operating leases - net	31.1	10.3	$ 3.4
Fair Value, Nonrecurring Measurements | Level 3
Assets and liabilities measured at fair value
Equipment on operating leases - net	654.4	478.7
Losses, Equipment on operating leases - net	31.1	10.3
Other assets	184.0	96.2
Losses, Other assets	28.6	9.1
Total fair value	838.4	574.9
Total (gains) losses	$ 59.7	$ 19.4