Segment Reporting - Segment Reporting (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended																								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 segments		Oct. 31, 2012		Oct. 31, 2011		Oct. 31, 2013 NA Truck [Member]		Oct. 31, 2012 NA Truck [Member]		Oct. 31, 2011 NA Truck [Member]		Oct. 31, 2013 NA Parts [Member] centers		Oct. 31, 2012 NA Parts [Member]		Oct. 31, 2011 NA Parts [Member]		Oct. 31, 2013 Global [Member]		Oct. 31, 2012 Global [Member]		Oct. 31, 2011 Global [Member]		Oct. 31, 2011 Financial Services Operations [Member]	Oct. 31, 2013 Financial Services Operations [Member]		Oct. 31, 2012 Financial Services Operations [Member]		Oct. 31, 2011 Financial Services Operations [Member]		Oct. 31, 2013 Corporate And Eliminations [Member]		Oct. 31, 2012 Corporate And Eliminations [Member]		Oct. 31, 2011 Corporate And Eliminations [Member]		Oct. 31, 2013 Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage																																														13.00%
Concentration Risk, Customer									0
Number Of Regional Parts Distribution Centers																					11
Number Of Segments									4
Financing Fees And Revenue Reimbursement																																	$ 11
External sales and revenues, net									10,775		12,695		13,641		6,312		7,946		8,591		2,558		2,497		2,562		1,747		2,084		2,288			158	[1]	168	[1]	200	[1]	0		0		0
Intersegment sales and revenues									0		0		0		486		442		572		57		124		178		78		126		142			75	[1]	91	[1]	91	[1]	(696)		(783)		(983)
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		6,798		8,388		9,163		2,615		2,621		2,740		1,825		2,210		2,430			233	[1]	259	[1]	291	[1]	(696)		(783)		(983)
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		6,798		8,388		9,163		2,615		2,621		2,740		1,825		2,210		2,430			233	[1]	259	[1]	291	[1]	(696)		(783)		(983)
Net Income (Loss) Attributable to Parent									(898)		(3,010)		1,723		(902)		(736)		344		476		343		397		(6)		(168)		72			81	[1]	91	[1]	129	[1]	(506)		(2,469)		855
Income (Loss) from Continuing Operations Attributable to Parent									(857)		(2,939)		1,797
Income tax benefit (expense)									171		(1,780)		1,417		0		0		0		0		0		0		0		0		0			0	[1]	0	[1]	0	[1]	171		(1,780)		1,417
Segment profit (loss)									(1,028)		(1,159)		380		(902)		(736)		344		476		343		397		(6)		(168)		72			81	[1]	91	[1]	129	[1]	(677)		(689)		(562)
Depreciation and amortization									417		323		328		305		216		230		17		16		16		32		36		34			40	[1]	33	[1]	28	[1]	23		22		20
Interest Expense									321		259		247		0		0		0		0		0		0		0		0		0			70	[1]	88	[1]	109	[1]	251		171		138
Equity in income (loss) of non-consolidated affiliates									11		(29)		(71)		10		(1)		0		6		5		5		(5)		(33)		(76)			0	[1]	0	[1]	0	[1]	0		0		0
Capital expenditures									$ (167)	[2]	$ (309)	[2]	$ (429)	[2]	$ (142)	[2]	$ (173)	[2]	$ (171)	[2]	$ (2)	[2]	$ (21)	[2]	$ (19)	[2]	$ (9)	[2]	$ (50)	[2]	$ (84)	[2]		$ (2)	[1],[2]	$ (3)	[1],[2]	$ (2)	[1],[2]	$ (12)	[2]	$ (62)	[2]	$ (153)	[2]

[1] (A)Total sales and revenues in the Financial Services segment include interest revenues of $181 million, $254 million, and $285 million for 2013, 2012, and 2011, respectively.

[2] (B)Exclusive of purchases of equipment leased to others.