Segment Reporting - Summary of Segment Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2014		Oct. 31, 2013		Oct. 31, 2012
Segment Reporting Information [Line Items]
External sales and revenues, net									$ 10,806		$ 10,775		$ 12,695
Intersegment sales and revenues									0		0		0
Sales and revenues, net	3,008	2,844	2,746	2,208	2,751	2,861	2,526	2,637	10,806		10,775		12,695
Loss from continuing operations, net of tax									(622)		(857)		(2,939)
Income tax expense									(26)		171		(1,780)
Segment Profit Loss									(596)		(1,028)		(1,159)
Depreciation and amortization									332		417		323
Interest expense									314		321		259
Equity in income (loss) of non-consolidated affiliates									9		11		(29)
Capital expenditures									88	[1]	167	[1]	309	[1]
North America Truck [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net									6,660		6,312		7,946
Intersegment sales and revenues									420		486		442
Sales and revenues, net									7,080		6,798		8,388
Loss from continuing operations, net of tax									(408)		(902)		(736)
Income tax expense									0		0		0
Segment Profit Loss									(408)		(902)		(736)
Depreciation and amortization									212		305		216
Interest expense									0		0		0
Equity in income (loss) of non-consolidated affiliates									5		10		(1)
Capital expenditures									65	[1]	142	[1]	173	[1]
North America Parts [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net									2,471		2,558		2,497
Intersegment sales and revenues									46		57		124
Sales and revenues, net									2,517		2,615		2,621
Loss from continuing operations, net of tax									500		476		343
Income tax expense									0		0		0
Segment Profit Loss									500		476		343
Depreciation and amortization									15		17		16
Interest expense									0		0		0
Equity in income (loss) of non-consolidated affiliates									4		6		5
Capital expenditures									6	[1]	2	[1]	21	[1]
Global Operations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net									1,522		1,747		2,084
Intersegment sales and revenues									35		78		126
Sales and revenues, net									1,557		1,825		2,210
Loss from continuing operations, net of tax									(218)		(6)		(168)
Income tax expense									0		0		0
Segment Profit Loss									(218)		(6)		(168)
Depreciation and amortization									32		32		36
Interest expense									0		0		0
Equity in income (loss) of non-consolidated affiliates									0		(5)		(33)
Capital expenditures									8	[1]	9	[1]	50	[1]
Financial Services Operations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net									153	[2]	158	[2]	168	[2]
Intersegment sales and revenues									79	[2]	75	[2]	91	[2]
Sales and revenues, net									232	[2]	233	[2]	259	[2]
Loss from continuing operations, net of tax									97	[2]	81	[2]	91	[2]
Income tax expense									0	[2]	0	[2]	0	[2]
Segment Profit Loss									97	[2]	81	[2]	91	[2]
Depreciation and amortization									46	[2]	40	[2]	33	[2]
Interest expense									71	[2]	70	[2]	88	[2]
Equity in income (loss) of non-consolidated affiliates									0	[2]	0	[2]	0	[2]
Capital expenditures									1	[1],[2]	2	[1],[2]	3	[1],[2]
Investment Income, Interest	170				254				181
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net									0		0		0
Intersegment sales and revenues									(580)		(696)		(783)
Sales and revenues, net									(580)		(696)		(783)
Loss from continuing operations, net of tax									(593)		(506)		(2,469)
Income tax expense									(26)		171		(1,780)
Segment Profit Loss									(567)		(677)		(689)
Depreciation and amortization									27		23		22
Interest expense									243		251		171
Equity in income (loss) of non-consolidated affiliates									0		0		0
Capital expenditures									$ 8	[1]	$ 12	[1]	$ 62	[1]

[1] Exclusive of purchases of equipment leased to others.

[2] (A)Total sales and revenues in the Financial Services segment include interest revenues of $170 million, $181 million, and $254 million for 2014, 2013, 2012, respectively.