Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Jan. 31, 2015	Apr. 30, 2016	Apr. 30, 2015	Oct. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges	$ 3	$ 1		$ 5	$ 8
Goodwill	$ 38			$ 38		$ 38
Cash and Cash Equivalents, Maturity Term	90 days
Marketable Securities, Maturity Term	90 days
North America Truck [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			$ 7