Segment Reporting - Summary of Segment Assets (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Apr. 30, 2019	Jan. 31, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018	Nov. 01, 2018	Oct. 31, 2018
Segment Reporting Information [Line Items]
External sales and revenues, net	$ 2,996		$ 2,422	$ 5,429	$ 4,327
Segment Assets	7,066	$ 7,066		7,066		$ 7,121	$ 7,230
Intersegment sales and revenues	0		0	0	0
Sales and revenues, net	2,996		2,422	5,429	4,327
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(48)		55	(37)
Income Tax Expense (Benefit)	(1)	(1)	7	(20)	22
Segment Profit Loss	(49)		62	(57)	4
Depreciation, Depletion and Amortization	49		54	97	109
Interest expense	82	$ 82	79	167	158
Equity in income of non-consolidated affiliates	3		0	3	0
Capital expenditures	22		23	66	53
North America Truck [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	2,287		1,688		2,916
Segment Assets	2,120			2,120			2,085
Intersegment sales and revenues	9		16	30
Sales and revenues, net	2,287			4,063
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(74)		42	16
Income Tax Expense (Benefit)	0		0	0	0
Segment Profit Loss	(74)		42	16	35
Depreciation, Depletion and Amortization	26		34	52	69
Interest expense	0		0		0
Equity in income of non-consolidated affiliates	2		1	3	1
Capital expenditures	21		30		55
North America Parts [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	578		601	1,124	1,165
Segment Assets	650			650			636
Intersegment sales and revenues	1		0	3	4
Sales and revenues, net	578			1,124
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	144		132	288	269
Income Tax Expense (Benefit)	0		0	0	0
Segment Profit Loss	144		132	288	269
Depreciation, Depletion and Amortization	2		1		3
Interest expense	0		0	0	0
Equity in income of non-consolidated affiliates	0		0
Capital expenditures	(1)		1	1	1
Global Operations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	80		89	141	161
Segment Assets	306			306			331
Intersegment sales and revenues	7		8	19	17
Sales and revenues, net	80			141
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	3		1	9	(6)
Income Tax Expense (Benefit)	0		0	0
Segment Profit Loss	3		1	9	(6)
Depreciation, Depletion and Amortization	2		2	4	5
Interest expense	0		0	0	0
Equity in income of non-consolidated affiliates	0		(1)	(1)
Capital expenditures	0		0	1	1
Financial Services Operations
Segment Reporting Information [Line Items]
Interest Revenue (Expense), Net	55		44	108	85
External sales and revenues, net	48		40	95	78
Segment Assets	2,930			2,930			2,648
Intersegment sales and revenues	30		23	57	44
Sales and revenues, net	48			95
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	32		19	63	39
Income Tax Expense (Benefit)	0		0	0	0
Segment Profit Loss	32		19	63	39
Depreciation, Depletion and Amortization	16		14	32	27
Interest expense	27		21	56	42
Equity in income of non-consolidated affiliates	0		0	0
Capital expenditures	1		0		0
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
External sales and revenues, net	3		4	6
Segment Assets	1,060			1,060			$ 1,530
Intersegment sales and revenues	(47)		(47)	(109)
Sales and revenues, net	3			6
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(153)		(139)	(413)	(355)
Income Tax Expense (Benefit)	1		(7)	20
Segment Profit Loss	(154)		(132)	(433)
Depreciation, Depletion and Amortization	3		3	6	5
Interest expense	55		58		116
Equity in income of non-consolidated affiliates	1		0		0
Capital expenditures	$ 1		$ (8)	$ 10	$ (4)