Property and Equipment, Net Depreciation Expense, Amortization Expense, and Interest Capitalized (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation	$ 134	$ 190	$ 206
Amortization	5	5	3
Interest Costs Capitalized	3	1	0
Equipment leased to others
Property, Plant and Equipment [Line Items]
Depreciation	$ 79	$ 76	$ 105