Segment Reporting - Sales and Revenues to External Customers & Long-lived Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended										12 Months Ended
	Oct. 31, 2013		Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012		Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2013		Oct. 31, 2012		Oct. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
External sales and revenues, net	$ 2,751		$ 2,861	$ 2,526	$ 2,637	$ 3,179		$ 3,246	$ 3,261	$ 3,009	$ 10,775		$ 12,695		$ 13,641
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
External sales and revenues, net											7,122		8,822		9,329
Long-lived assets	1,467	[1]				1,519	[1]				1,467	[1]	1,519	[1]
CANADA
Revenues from External Customers and Long-Lived Assets [Line Items]
External sales and revenues, net											791		949		1,071
Long-lived assets	26	[1]				28	[1]				26	[1]	28	[1]
MEXICO
Revenues from External Customers and Long-Lived Assets [Line Items]
External sales and revenues, net											694		728		1,002
Long-lived assets	157	[1]				94	[1]				157	[1]	94	[1]
BRAZIL
Revenues from External Customers and Long-Lived Assets [Line Items]
External sales and revenues, net											1,121		1,066		1,190
Long-lived assets	376	[1]				445	[1]				376	[1]	445	[1]
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
External sales and revenues, net											1,047		1,130		1,049
Long-lived assets	37	[1]				25	[1]				37	[1]	25	[1]
Truck [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
External sales and revenues, net											6,738		8,705		9,312
Parts [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
External sales and revenues, net											2,906		2,886		2,901
Engine [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
External sales and revenues, net											973		936		1,228
Financial Services Operations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
External sales and revenues, net											$ 158		$ 168		$ 200
Customer Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration Risk, Percentage											13.00%

[1] (A)Long-lived assets consist of Property and equipment, net, Goodwill, and Intangible assets, net.