Segment Reporting - Segment Assets (Details) (USD $) In Millions, unless otherwise specified	Jul. 31, 2014	Oct. 31, 2013
Segment Reporting Information [Line Items]
Segment Assets	$ 7,702	$ 8,315
NA Truck [Member]
Segment Reporting Information [Line Items]
Segment Assets	2,355	2,250
NA Parts [Member]
Segment Reporting Information [Line Items]
Segment Assets	704	716
Global [Member]
Segment Reporting Information [Line Items]
Segment Assets	816	1,162
Financial Services Operations [Member]
Segment Reporting Information [Line Items]
Segment Assets	2,504	2,355
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Segment Assets	$ 1,323	$ 1,832