Fair Value Measurements - Narrative (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	Oct. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Impairment Loss			$ 0
Asset impairment charges	$ 7		4			$ 15	$ 173
Goodwill	38					$ 38		$ 38
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		$ 0	142
Indefinite-Lived Intangible Assets (Excluding Goodwill)	24			43		24
Asset impairment charges				149
Goodwill				142
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	3		$ 0	$ 7		$ 3	7
North America Truck [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges					$ 18		$ 19
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 3	$ 7