Restructuring and Impairments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Jul. 31, 2017	Jan. 31, 2017	Jul. 31, 2016	Jul. 31, 2014	Jul. 31, 2017	Jul. 31, 2016	Oct. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (13)		$ 5		$ (4)	$ 11
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	2,747				2,747		$ 3,023
Restructuring and Related Cost, Incurred Cost					15	4
Asset impairment charges	6		12		13	17
Goodwill	38				38		$ 38
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost					0	0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost					15	4
Lease Vacancy [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost					0	0
North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	1		$ 11		8	$ 16
Conway [Member] | North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges					5
Pure Power Technologies [Member] | North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges					3
Other Postretirement Benefit Plan [Member] | Chatham [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Postemployment Benefits, Period Expense	23	$ 6		$ 14
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(66)				$ (66)
Other Postretirement Benefit Plan [Member] | Melrose Park [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Postemployment Benefits, Period Expense	41
Defined Benefit Plan, Actuarial Gain (Loss)	91
Other Postretirement Benefit Plan [Member] | Melrose Park [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Postemployment Benefits, Period Expense	$ 10