Property and Equipment, Net Depreciation Expense, Amortization Expense, and Interest Capitalized (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Property, Plant and Equipment [Line Items]
Depreciation	$ 190	$ 206	$ 260
Amortization	5	3	0
Interest Costs Capitalized	1	0	5
Equipment Leased to Other Party [Member]
Property, Plant and Equipment [Line Items]
Depreciation	$ 76	$ 105	$ 135