Property and Equipment Net (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	$ 3,612,102		$ 3,951,221
Less: accumulated depreciation and amortization	(2,123,584)	[1]	(2,265,376)	[1]
Total property and equipment, net	1,488,518		1,685,845
Land
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	213,838		213,838
Buildings
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	697,874		639,658
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	279,052		304,440
Computers and Equipment
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	1,512,860	[2]	2,040,381	[2]
Capitalized Software And Labor
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	766,368		595,366
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	61,280		75,559
Assets not yet in use
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	$ 80,830		$ 81,979

[1] Includes $20 million and $33 million of accumulated depreciation, and $6 million and $12 million of accumulated amortization related to the capital lease as of December 31, 2012 and 2013, respectively.

[2] Includes data center equipment acquired under a capital lease of approximately $37 million and $44 million as of December 31, 2012 and 2013, respectively.