Restructuring and Impairments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Jul. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges						$ 3	$ 10	$ 76
Restructuring and Related Cost, Incurred Cost						22	4	71
Asset impairment charges						13	27	30
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)						0	1	7
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost						0	0	0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 10	$ 13
Restructuring and Related Cost, Incurred Cost						22	4	68
Lease Vacancy [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost						$ 0	0	3
North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges							17	11
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)							$ 8	$ 9
Global Operations [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges		3
Asset Impairment Charges Including Intangible Assets		7
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		4
Indianapolis and Waukesha Foundry [Member] | North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 13
Indianapolis and Waukesha Foundry [Member] | North America Truck [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				2
Indianapolis and Waukesha Foundry [Member] | North America Truck [Member] | Pension And Other Postretirement Contractual Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 11
Brazilian Reporting Unit [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 1		3
Indefinite-Lived Intangible Assets (Excluding Goodwill)			$ 24
Other Postretirement Benefits Plan [Member] | Chatham [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Postemployment Benefits, Period Expense					$ 14
Voluntary Separation Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 37