Segment Reporting - Summary of Segment Assets (Details) - USD ($) $ in Millions	Apr. 30, 2016	Oct. 31, 2015
Segment Reporting Information [Line Items]
Segment Assets	$ 6,188	$ 6,692
North America Truck [Member]
Segment Reporting Information [Line Items]
Segment Assets	1,887	1,876
North America Parts [Member]
Segment Reporting Information [Line Items]
Segment Assets	645	641
Global Operations [Member]
Segment Reporting Information [Line Items]
Segment Assets	370	409
Financial Services Operations [Member]
Segment Reporting Information [Line Items]
Segment Assets	2,284	2,455
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Segment Assets	$ 1,002	$ 1,311