Segment Reporting - Summary of Segment Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Segment Reporting Information [Line Items]
External 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)
Interest expense	71	76	199	243
Equity in income of non-consolidated affiliates	2	1	0	4
Capital expenditures	25	24	115	90
Intersegment sales and revenues	0	0	0	0
Segment Reporting, Segment Revenue	1,675	3,042	5,438	8,471
Segment Profit Loss	(29)	185	(101)	128
Depreciation, Depletion and Amortization	47	47	146	144
North America Truck [Member]
Segment Reporting Information [Line Items]
External 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
Interest expense	0	0	0	0
Equity in income of non-consolidated affiliates	2	0	(1)	3
Capital expenditures	18	17	93	69
Intersegment sales and revenues	26	45	34	75
Segment Reporting, Segment Revenue	1,203	2,387	3,834	6,480
Segment Profit Loss	(22)	167	(131)	183
Depreciation, Depletion and Amortization	27	26	83	78
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
External 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
Interest expense	55	49	144	160
Equity in income of non-consolidated affiliates	0	0	0	0
Capital expenditures	5	4	13	14
Intersegment sales and revenues	(38)	(83)	(84)	(192)
Segment Reporting, Segment Revenue	(38)	(80)	(82)	(183)
Segment Profit Loss	(115)	(162)	(328)	(595)
Depreciation, Depletion and Amortization	2	1	5	7
North America Parts [Member]
Segment Reporting Information [Line Items]
External 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
Interest expense	0	0	0	0
Equity in income of non-consolidated affiliates	0	1	1	2
Capital expenditures	1	2	6	3
Intersegment sales and revenues	1	2	3	5
Segment Reporting, Segment Revenue	414	571	1,350	1,698
Segment Profit Loss	97	149	319	437
Depreciation, Depletion and Amortization	1	1	5	4
Global Operations [Member]
Segment Reporting Information [Line Items]
External 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
Interest expense	0	0	0	0
Equity in income of non-consolidated affiliates	0	0	0	(1)
Capital expenditures	1	1	3	2
Intersegment sales and revenues	1	8	12	27
Segment Reporting, Segment Revenue	47	90	166	250
Segment Profit Loss	1	1	(12)	10
Depreciation, Depletion and Amortization	1	3	5	7
Financial Services Operations
Segment Reporting Information [Line Items]
External 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
Interest expense	16	27	55	83
Equity in income of non-consolidated affiliates	0	0	0	0
Capital expenditures	0	0	0	2
Intersegment sales and revenues	10	28	35	85
Segment Reporting, Segment Revenue	49	74	170	226
Segment Profit Loss	10	30	51	93
Depreciation, Depletion and Amortization	16	16	48	48
Interest Revenue (Expense), Net	$ 29	$ 53	$ 103	$ 161