Property and Equipment, net - Equipment Leased to Others (Details) (USD $) In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
Property, Plant and Equipment [Line Items]
Equipment leased to others, gross	$ 4,181	$ 3,888
Less: Accumulated Depreciation	2,440	2,228
Property and equipment, net	1,741	1,660
Buildings, machinery, and equipment under financing arrangements and capital lease obligations	92	156
Less: Accumulated depreciation and amortization	31	86
Assets under financing arrangements and capital lease obligations, net	61	70
Equipment Leased to Other Party [Member]
Property, Plant and Equipment [Line Items]
Equipment leased to others, gross	663	301
Less: Accumulated Depreciation	191	94
Property and equipment, net	$ 472	$ 207