Segment Reporting - Summary of Segment Operations (Details) - USD ($) $ in Millions	3 Months Ended							12 Months Ended
	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Segment Reporting Information [Line Items]
External sales and revenues, net								$ 8,570	$ 8,110	$ 10,140
Sales and revenues, net	$ 2,213	$ 2,096	$ 1,663	$ 2,063	$ 2,086	$ 2,197	$ 1,765	8,570	8,111	10,140
Income (loss) from continuing operations, net of tax								29	(97)	(187)
Income tax expense								(10)	(33)	(51)
Interest expense								351	327	307
Equity in income of non-consolidated affiliates								6	6	6
Capital expenditures								102	116	115
Intersegment sales and revenues								0	1	0
Segment Profit Loss								39	(64)	(136)
Depreciation, Depletion and Amortization								223	225	281
North America Truck [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net								5,770	5,271	7,055
Sales and revenues, net								5,809	5,403	7,213
Income (loss) from continuing operations, net of tax								(6)	(189)	(141)
Income tax expense								0	0	0
Interest expense								0	0	0
Equity in income of non-consolidated affiliates								4	5	5
Capital expenditures								82	97	92
Intersegment sales and revenues								39	132	158
Segment Profit Loss								(6)	(189)	(141)
Depreciation, Depletion and Amortization								137	129	173
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net								10	10	10
Sales and revenues, net								(175)	(295)	(333)
Income (loss) from continuing operations, net of tax								(651)	(627)	(669)
Income tax expense								(10)	(33)	(51)
Interest expense								265	247	233
Equity in income of non-consolidated affiliates								0	0	0
Capital expenditures								12	11	12
Intersegment sales and revenues								(185)	(305)	(343)
Segment Profit Loss								(641)	(594)	(618)
Depreciation, Depletion and Amortization								11	15	20
North America Parts [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net								2,369	2,398	2,475
Sales and revenues, net								2,392	2,427	2,513
Income (loss) from continuing operations, net of tax								616	640	592
Income tax expense								0	0	0
Interest expense								0	0	0
Equity in income of non-consolidated affiliates								3	4	4
Capital expenditures								2	2	3
Intersegment sales and revenues								23	29	38
Segment Profit Loss								616	640	592
Depreciation, Depletion and Amortization								11	13	14
Global Operations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net								279	296	455
Sales and revenues, net								309	341	506
Income (loss) from continuing operations, net of tax								(7)	(21)	(67)
Income tax expense								0	0	0
Interest expense								0	0	0
Equity in income of non-consolidated affiliates								(1)	(3)	(3)
Capital expenditures								5	4	4
Intersegment sales and revenues								30	45	51
Segment Profit Loss								(7)	(21)	(67)
Depreciation, Depletion and Amortization								13	18	23
Financial Services Operations
Segment Reporting Information [Line Items]
External sales and revenues, net								142	135	145
Sales and revenues, net								235	235	241
Income (loss) from continuing operations, net of tax								77	100	98
Income tax expense								0	0	0
Interest expense								86	80	74
Equity in income of non-consolidated affiliates								0	0	0
Capital expenditures								1	2	4
Investment Income, Interest								165	167	175
Intersegment sales and revenues								93	100	96
Segment Profit Loss								77	100	98
Depreciation, Depletion and Amortization								51	50	51
Truck
Segment Reporting Information [Line Items]
Sales and revenues, net								5,706	5,176	6,845
Parts
Segment Reporting Information [Line Items]
Sales and revenues, net								2,177	2,216	2,399
Engine
Segment Reporting Information [Line Items]
Sales and revenues, net								545	583	751
Financial Services Operations
Segment Reporting Information [Line Items]
Sales and revenues, net								$ 142	$ 136	$ 145