Segment Reporting - Summary of Segment Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Segment Reporting Information [Line Items]
External sales and revenues, net	$ 3,042	$ 2,606	$ 8,471	$ 6,933
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	156	170	119	152
Income Tax Expense (Benefit)	(29)	(3)	(9)	(25)
Interest expense	76	82	243	240
Equity in income of non-consolidated affiliates	1	0	4	0
Capital expenditures	24	26	90	79
Intersegment sales and revenues	0	0	0	0
Segment Reporting, Segment Revenue	3,042	2,606	8,471	6,933
Segment Profit Loss	185	173	128	177
Depreciation, Depletion and Amortization	47	51	144	160
North America Truck [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	2,342	1,894	6,405	4,810
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	167	165	183	200
Income Tax Expense (Benefit)	0	0	0	0
Interest expense	0	0	0	0
Equity in income of non-consolidated affiliates	0	1	3	2
Capital expenditures	17	19	69	74
Intersegment sales and revenues	45	22	75	61
Segment Reporting, Segment Revenue	2,387	1,916	6,480	4,871
Segment Profit Loss	167	165	183	200
Depreciation, Depletion and Amortization	26	31	78	100
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	3	1	9	8
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(191)	(166)	(604)	(521)
Income Tax Expense (Benefit)	29	3	9	25
Interest expense	49	60	160	176
Equity in income of non-consolidated affiliates	0	0	0	0
Capital expenditures	4	5	14	1
Intersegment sales and revenues	(83)	(70)	(192)	(174)
Segment Reporting, Segment Revenue	(80)	(69)	(183)	(166)
Segment Profit Loss	(162)	(163)	(595)	(496)
Depreciation, Depletion and Amortization	1	1	7	6
North America Parts [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	569	603	1,693	1,768
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	149	144	437	413
Income Tax Expense (Benefit)	0	0	0	0
Interest expense	0	0	0	0
Equity in income of non-consolidated affiliates	1	1	2	2
Capital expenditures	2	0	3	1
Intersegment sales and revenues	2	2	5	6
Segment Reporting, Segment Revenue	571	605	1,698	1,774
Segment Profit Loss	149	144	437	413
Depreciation, Depletion and Amortization	1	2	4	5
Global Operations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	82	68	223	229
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	1	4	10	(2)
Income Tax Expense (Benefit)	0	0	0	0
Interest expense	0	0	0	0
Equity in income of non-consolidated affiliates	0	(2)	(1)	(4)
Capital expenditures	1	1	2	2
Intersegment sales and revenues	8	21	27	38
Segment Reporting, Segment Revenue	90	89	250	267
Segment Profit Loss	1	4	10	(2)
Depreciation, Depletion and Amortization	3	3	7	8
Financial Services Operations
Segment Reporting Information [Line Items]
Interest Revenue (Expense), Net	53	46	161	131
External sales and revenues, net	46	40	141	118
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	30	23	93	62
Income Tax Expense (Benefit)	0	0	0	0
Interest expense	27	22	83	64
Equity in income of non-consolidated affiliates	0	0	0	0
Capital expenditures	0	1	2	1
Intersegment sales and revenues	28	25	85	69
Segment Reporting, Segment Revenue	74	65	226	187
Segment Profit Loss	30	23	93	62
Depreciation, Depletion and Amortization	$ 16	$ 14	$ 48	$ 41