Segment Reporting - Summary of Segment Assets (Details) - USD ($) $ in Millions	Jan. 31, 2016	Oct. 31, 2015
Segment Reporting Information [Line Items]
Segment Assets	$ 5,980	$ 6,692
North America Truck [Member]
Segment Reporting Information [Line Items]
Segment Assets	1,934	1,876
North America Parts [Member]
Segment Reporting Information [Line Items]
Segment Assets	623	641
Global Operations [Member]
Segment Reporting Information [Line Items]
Segment Assets	349	409
Financial Services Operations [Member]
Segment Reporting Information [Line Items]
Segment Assets	2,094	2,455
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Segment Assets	$ 980	$ 1,311