Segment Reporting - Summary of Segment Assets (Details) - USD ($) $ in Millions	Oct. 31, 2017	Oct. 31, 2016
Segment Reporting Information [Line Items]
Segment Assets	$ 6,135	$ 5,653
North America Truck [Member]
Segment Reporting Information [Line Items]
Segment Assets	1,621	1,520
North America Parts [Member]
Segment Reporting Information [Line Items]
Segment Assets	632	594
Global Operations [Member]
Segment Reporting Information [Line Items]
Segment Assets	378	407
Financial Services Operations
Segment Reporting Information [Line Items]
Segment Assets	2,207	2,116
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Segment Assets	$ 1,297	$ 1,016