Balance Sheet Components - Property, Plant and Equipment, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 8,395,616	$ 7,388,605
Less accumulated depreciation	(2,789,180)	(2,390,335)
Property, plant and equipment, net	5,606,436	4,998,270
Core systems [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,820,772	3,252,569
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,383,387	2,074,382
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,204,900	1,053,451
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	351,697	460,259
Personal property [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	450,914	387,909
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 183,946	$ 160,035