Segment Reporting - Summary of Segment Long Lived Assets and Revenue (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net	$ 2,488	$ 2,538	$ 2,693	$ 2,421	$ 3,008	$ 2,844	$ 2,746	$ 2,208	$ 10,140	$ 10,806	$ 10,775
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	1,126				1,277				1,126	1,277
Sales and revenues, net									7,722	7,760	7,122
CANADA
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	19				26				19	26
Sales and revenues, net									774	749	791
MEXICO
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	186				190				186	190
Sales and revenues, net									653	657	694
BRAZIL
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	98				182				98	182
Sales and revenues, net									486	833	1,121
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 11				$ 15				11	15
Sales and revenues, net									505	807	1,047
Truck [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net									6,845	7,137	6,738
Financial Services Operations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net									145	153	158
Parts [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net									2,399	2,424	2,906
Engine [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net									751	1,092	973
Financial Services Operations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Investment Income, Interest									175	170	181
Sales and revenues, net									$ 241	$ 232	$ 233