Segment Reporting (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 31, 2013 segments		Jan. 31, 2012		Oct. 31, 2012
Segment Reporting Information [Line Items]
Segment Assets	$ 8,531				$ 9,102
Number Of Segments	4
External sales and revenues, net	2,637		3,009
Intersegment sales and revenues	0		0
Sales and revenues, net	2,637		3,009
Income (Loss) from Continuing Operations Attributable to Parent	(114)		(144)
Income tax benefit (expense)	(15)		76
Segment profit (loss)	(99)		(220)
Depreciation and amortization	100		78
Interest expense	74		61
Equity in income (loss) of non-consolidated affiliates	(1)		(7)
Capital expenditures	72		103
Truck [Domain]
Segment Reporting Information [Line Items]
Segment Assets	1,979				2,118
External sales and revenues, net	1,656	[1]	2,111	[1]
Intersegment sales and revenues	22	[1]	11	[1]
Sales and revenues, net	1,678	[1]	2,122	[1]
Income (Loss) from Continuing Operations Attributable to Parent	(58)	[1]	(27)	[1]
Income tax benefit (expense)	0	[1]	0	[1]
Segment profit (loss)	(58)	[1]	(27)	[1]
Depreciation and amortization	42	[1]	34	[1]
Interest expense	0	[1]	0	[1]
Equity in income (loss) of non-consolidated affiliates	0	[1]	(9)	[1]
Capital expenditures	15		16
Engine [Member]
Segment Reporting Information [Line Items]
Segment Assets	1,767				1,777
External sales and revenues, net	412		420
Intersegment sales and revenues	328		439
Sales and revenues, net	740		859
Income (Loss) from Continuing Operations Attributable to Parent	(27)		(120)
Income tax benefit (expense)	0		0
Segment profit (loss)	(27)		(120)
Depreciation and amortization	39		29
Interest expense	0		0
Equity in income (loss) of non-consolidated affiliates	(2)		1
Capital expenditures	53		40
Parts [Member]
Segment Reporting Information [Line Items]
Segment Assets	715				707
Number Of Regional Parts Distribution Centers	11
External sales and revenues, net	530		434
Intersegment sales and revenues	22		35
Sales and revenues, net	552		469
Income (Loss) from Continuing Operations Attributable to Parent	86		50
Income tax benefit (expense)	0		0
Segment profit (loss)	86		50
Depreciation and amortization	3		2
Interest expense	0		0
Equity in income (loss) of non-consolidated affiliates	1		1
Capital expenditures	1		7
Financial Services Operations [Member]
Segment Reporting Information [Line Items]
Segment Assets	2,406				2,563
External sales and revenues, net	39	[2]	44	[2]
Intersegment sales and revenues	20	[2]	24	[2]
Sales and revenues, net	59	[2]	68	[2]
Income (Loss) from Continuing Operations Attributable to Parent	22	[2]	27	[2]
Income tax benefit (expense)	0	[2]	0	[2]
Segment profit (loss)	22	[2]	27	[2]
Depreciation and amortization	9	[2]	8	[2]
Interest expense	18	[2]	25	[2]
Equity in income (loss) of non-consolidated affiliates	0	[2]	0	[2]
Capital expenditures	0		1
Interest revenues	58		67
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Segment Assets	1,664				1,937
External sales and revenues, net	0		0
Intersegment sales and revenues	(392)		(509)
Sales and revenues, net	(392)		(509)
Income (Loss) from Continuing Operations Attributable to Parent	(137)		(74)
Income tax benefit (expense)	(15)		76
Segment profit (loss)	(122)		(150)
Depreciation and amortization	7		5
Interest expense	56		36
Equity in income (loss) of non-consolidated affiliates	0		0
Capital expenditures	$ 3		$ 39

[1] Total sales and revenues in the Financial Services segment include interest revenues of $58 million and $67 million for the three months ended January 31, 2013 and 2012, respectively.

[2] Includes amounts related to discontinued operations. For more information, see Note 2, Discontinued Operations.