Balance Sheet Components (Property and Equipment) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Information technology assets	$ 9,701	$ 9,094
Land and buildings	10,274	7,488
Construction in progress	5,890	5,602
Leasehold improvements	1,629	1,576
Furniture and fixtures	80	77
Total	27,574	23,837
Less: accumulated depreciation and amortization	8,088	7,313
Property and equipment, net	19,486	16,524
Land and Building [Member] | Construction in progress
Property, Plant and Equipment [Line Items]
Cost basis of property and equipment under capital lease	$ 258