Restructuring and Impairments - Restructuring Reserve by Type (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Oct. 31, 2015	Jul. 31, 2015	Oct. 31, 2014	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 3	$ 10	$ 76
Restructuring Reserve	$ 68		$ 20	15	7	68
Restructuring and Related Cost, Incurred Cost				22	4	71
Payments for Restructuring				(13)	(67)	(20)
Restructuring Reserve, Accrual Adjustment				(1)	2	(3)
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	10	$ 13
Restructuring Reserve	62		8	14	5	62
Restructuring and Related Cost, Incurred Cost				22	4	68
Payments for Restructuring				(12)	(63)	(11)
Restructuring Reserve, Accrual Adjustment				(1)	2	(3)
Lease Vacancy [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	5		11	0	1	5
Restructuring and Related Cost, Incurred Cost				0	0	3
Payments for Restructuring				(1)	(4)	(8)
Restructuring Reserve, Accrual Adjustment				0	0	(1)
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 1		1	1	1	1
Restructuring and Related Cost, Incurred Cost				0	0	0
Payments for Restructuring				0	0	(1)
Restructuring Reserve, Accrual Adjustment				$ 0	$ 0	$ 1
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