Restructuring and Impairments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Jan. 31, 2015	Jul. 31, 2014	Apr. 30, 2016	Apr. 30, 2015	Oct. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3	$ 6			$ 6	$ 9
Asset impairment charges	3	1			5	8
Goodwill	38				38		$ 38
North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			$ 7
Indianapolis and Waukesha Foundry [Member] | North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		$ 12	$ 13			$ 12
Minimum [Member] | Chatham [Member] | North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0				0
Maximum [Member] | Chatham [Member] | North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 60				$ 60
Other Postretirement Benefit Plan [Member] | Chatham [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Postemployment Benefits, Period Expense				$ 14