Segment Reporting - Summary of Segment Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019	Oct. 31, 2019
Segment Reporting Information [Line Items]
External sales and revenues, net	$ 1,675	$ 3,042	$ 5,438	$ 8,471
Segment Assets	6,675		6,675		$ 6,917
Intersegment sales and revenues	0	0	0	0
Sales and revenues, net	1,675	3,042	5,438	8,471
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(37)	156	(111)	119
Income Tax Expense (Benefit)	8	29	10	9
Segment Profit Loss	(29)	185	(101)	128
Depreciation, Depletion and Amortization	47	47	146	144
Interest expense	71	76	199	243
Equity in income of non-consolidated affiliates	2	1	0	4
Capital expenditures	25	24	115	90
North America Truck [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	1,177	2,342	3,800	6,405
Segment Assets	1,721		1,721		1,705
Intersegment sales and revenues	26	45	34	75
Sales and revenues, net	1,177	2,342	3,800	6,405
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(22)	167	(131)	183
Income Tax Expense (Benefit)	0	0	0	0
Segment Profit Loss	(22)	167	(131)	183
Depreciation, Depletion and Amortization	27	26	83	78
Interest expense	0	0	0	0
Equity in income of non-consolidated affiliates	2	0	(1)	3
Capital expenditures	18	17	93	69
North America Parts [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	413	569	1,347	1,693
Segment Assets	641		641		688
Intersegment sales and revenues	1	2	3	5
Sales and revenues, net	413	569	1,347	1,693
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	97	149	319	437
Income Tax Expense (Benefit)	0	0	0	0
Segment Profit Loss	97	149	319	437
Depreciation, Depletion and Amortization	1	1	5	4
Interest expense	0	0	0	0
Equity in income of non-consolidated affiliates	0	1	1	2
Capital expenditures	1	2	6	3
Global Operations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	46	82	154	223
Segment Assets	202		202		296
Intersegment sales and revenues	1	8	12	27
Sales and revenues, net	46	82	154	223
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	1	1	(12)	10
Income Tax Expense (Benefit)	0	0	0	0
Segment Profit Loss	1	1	(12)	10
Depreciation, Depletion and Amortization	1	3	5	7
Interest expense	0	0	0	0
Equity in income of non-consolidated affiliates	0	0	0	(1)
Capital expenditures	1	1	3	2
Financial Services Operations
Segment Reporting Information [Line Items]
Interest Revenue (Expense), Net	29	53	103	161
External sales and revenues, net	39	46	135	141
Segment Assets	2,285		2,285		2,774
Intersegment sales and revenues	10	28	35	85
Sales and revenues, net	39	46	135	141
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	10	30	51	93
Income Tax Expense (Benefit)	0	0	0	0
Segment Profit Loss	10	30	51	93
Depreciation, Depletion and Amortization	16	16	48	48
Interest expense	16	27	55	83
Equity in income of non-consolidated affiliates	0	0	0	0
Capital expenditures	0	0	0	2
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	0	3	2	9
Segment Assets	1,826		1,826		$ 1,454
Intersegment sales and revenues	(38)	(83)	(84)	(192)
Sales and revenues, net	0	3	2	9
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(123)	(191)	(338)	(604)
Income Tax Expense (Benefit)	(8)	(29)	(10)	(9)
Segment Profit Loss	(115)	(162)	(328)	(595)
Depreciation, Depletion and Amortization	2	1	5	7
Interest expense	55	49	144	160
Equity in income of non-consolidated affiliates	0	0	0	0
Capital expenditures	$ 5	$ 4	$ 13	$ 14