Segment Information (Detail 3) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Segment Reporting Information
Net revenue	$ 50,123	$ 52,107	$ 55,123
Net property, plant and equipment:
Property, plant and equipment	9,636	9,886
U.S.
Segment Reporting Information
Net revenue	19,581	20,063	20,833
Net property, plant and equipment:
Property, plant and equipment	4,768	4,851
United Kingdom
Segment Reporting Information
Net revenue	5,074	5,379	5,661
Net property, plant and equipment:
Property, plant and equipment	912	955
Other countries
Segment Reporting Information
Net revenue	25,468	26,665	$ 28,629
Net property, plant and equipment:
Property, plant and equipment	$ 3,956	$ 4,080