Restructuring and Impairments - Schedule of Impairment Charges (Details) - USD ($) $ in Millions	3 Months Ended					9 Months Ended
	Jul. 31, 2015	Jan. 31, 2015	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Restructuring Cost and Reserve [Line Items]
Goodwill, Impairment Loss			$ 0
Other Asset Impairment Charges	$ 4		4			$ 12	$ 24
Asset impairment charges	7		4			15	173
Brazilian Reporting Unit [Member]
Restructuring Cost and Reserve [Line Items]
Goodwill, Impairment Loss	0			$ 142		0	142
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	3		$ 0	7		$ 3	7
Asset impairment charges				$ 149
Impairment charges [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges							173
North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 3	$ 7
Asset impairment charges					$ 18		$ 19