Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended							12 Months Ended
	Oct. 31, 2015	Jul. 31, 2015	Jan. 31, 2015	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Apr. 30, 2013	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Impairment Loss								$ 0	$ 142	$ 81
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 19							19	34
Asset impairment charges								30	183	97
Goodwill	38					$ 184		$ 38	38	184	$ 280
Cash and Cash Equivalents, Maturity Term								90 days
Marketable Securities, Maturity Term								90 days
Brazilian Reporting Unit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Impairment Loss								$ 0	142	81
Indefinite-Lived Intangible Assets (Excluding Goodwill)		$ 24		$ 43
Asset impairment charges				149
Goodwill				142
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		3		$ 7				7	7	0
North America Truck [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Impairment Loss						77	$ 4	0	0	81
Asset impairment charges					$ 19				33
Goodwill	0					$ 0		$ 0	$ 0	$ 0	$ 82
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 4	$ 3	$ 7