Segment Reporting - Summary of Segment Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019	Jan. 31, 2020	Oct. 31, 2019
Segment Reporting Information [Line Items]
External sales and revenues, net	$ 1,925	$ 2,996	$ 3,763	$ 5,429
Segment Assets	6,440		6,440		$ 6,440	$ 6,917
Intersegment sales and revenues	0	0	0	0
Sales and revenues, net	1,925	2,996	3,763	5,429
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(38)	(48)	(74)	(37)
Income Tax Expense (Benefit)	7	(1)	2	(20)
Segment Profit Loss	(31)	(49)	(72)	(57)
Depreciation, Depletion and Amortization	49	49	99	97
Interest expense	63	82	128	167
Equity in income (loss) of non-consolidated affiliates	(1)	3	(2)	3
Capital expenditures	31	22	90	66
North America Truck [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	1,385	2,287	2,623	4,063
Segment Assets	1,840		1,840			1,705
Intersegment sales and revenues	4	9	8	30
Sales and revenues, net	1,385	2,287	2,623	4,063
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(51)	(74)	(109)	16
Income Tax Expense (Benefit)	0	0	0	0
Segment Profit Loss	(51)	(74)	(109)	16
Depreciation, Depletion and Amortization	29	26	56	52
Interest expense	0	0	0	0
Equity in income (loss) of non-consolidated affiliates	(2)	2	(3)	3
Capital expenditures	28	21	75	52
North America Parts [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	442	578	934	1,124
Segment Assets	648		648			688
Intersegment sales and revenues	1	1	2	3
Sales and revenues, net	442	578	934	1,124
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	103	144	222	288
Income Tax Expense (Benefit)	0	0	0	0
Segment Profit Loss	103	144	222	288
Depreciation, Depletion and Amortization	2	2	4	3
Interest expense	0	0	0	0
Equity in income (loss) of non-consolidated affiliates	1	0	1	1
Capital expenditures	0	(1)	5	1
Global Operations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	47	80	108	141
Segment Assets	186		186			296
Intersegment sales and revenues	4	7	11	19
Sales and revenues, net	47	80	108	141
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(13)	3	(13)	9
Income Tax Expense (Benefit)	0	0	0	0
Segment Profit Loss	(13)	3	(13)	9
Depreciation, Depletion and Amortization	2	2	4	4
Interest expense	0	0	0	0
Equity in income (loss) of non-consolidated affiliates	0	0	0	(1)
Capital expenditures	1	0	2	1
Financial Services Operations
Segment Reporting Information [Line Items]
Interest Revenue (Expense), Net	40	55	75	108
External sales and revenues, net	50	48	96	95
Segment Assets					2,081	2,774
Intersegment sales and revenues	14	30	25	57
Sales and revenues, net	50	48	96	95
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	24	32	41	63
Income Tax Expense (Benefit)	0	0	0	0
Segment Profit Loss	24	32	41	63
Depreciation, Depletion and Amortization	15	16	32	32
Interest expense	20	27	39	56
Equity in income (loss) of non-consolidated affiliates	0	0	0	0
Capital expenditures	0	1	0	2
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	1	3	2	6
Segment Assets					$ 1,685	$ 1,454
Intersegment sales and revenues	(23)	(47)	(46)	(109)
Sales and revenues, net	1	3	2	6
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(101)	(153)	(215)	(413)
Income Tax Expense (Benefit)	(7)	1	(2)	20
Segment Profit Loss	(94)	(154)	(213)	(433)
Depreciation, Depletion and Amortization	1	3	3	6
Interest expense	43	55	89	111
Equity in income (loss) of non-consolidated affiliates	0	1	0	0
Capital expenditures	$ 2	$ 1	$ 8	$ 10