Segment Reporting - Narrative (Details) $ in Millions	3 Months Ended
	Jan. 31, 2018 USD ($) segments	Jan. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number Of Segments | segments	4
Intersegment sales and revenues	$ 0	$ 0
Sales and revenues, net	1,905	1,663
Financial Services Operations
Segment Reporting Information [Line Items]
Intersegment sales and revenues	21	20
Sales and revenues, net	59	54
North America Truck [Member]
Segment Reporting Information [Line Items]
Intersegment sales and revenues	23	10
Sales and revenues, net	1,251	1,027
North America Parts [Member]
Segment Reporting Information [Line Items]
Intersegment sales and revenues	4	7
Sales and revenues, net	568	570
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Intersegment sales and revenues	(57)	(41)
Sales and revenues, net	$ (54)	$ (38)