Segment Information (Detail 3) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Segment Reporting Information
Net revenue	$ 28,871	$ 30,280	$ 31,077
Net property, plant and equipment:
Property, plant and equipment	6,269	6,375
U.S.
Segment Reporting Information
Net revenue	9,913	10,333	9,589
Net property, plant and equipment:
Property, plant and equipment	2,673	2,981
Other countries
Segment Reporting Information
Net revenue	18,958	19,947	$ 21,488
Net property, plant and equipment:
Property, plant and equipment	$ 3,596	$ 3,394