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Property and Equipment
3 Months Ended
Mar. 31, 2014
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment
Property and equipment consisted of the following (in millions): 
 
March 31,
2014
 
December 31,
2013
Network equipment
$
2,444

 
$
2,351

Land
45

 
45

Buildings
1,076

 
1,071

Leasehold improvements
214

 
203

Computer software, office equipment and other
104

 
95

Construction in progress
487

 
377

Total
4,370

 
4,142

Less: Accumulated depreciation
(1,296
)
 
(1,260
)
Property and equipment, net
$
3,074

 
$
2,882


Construction in progress includes costs primarily related to the construction of data centers in Iowa and Sweden and network equipment infrastructure to support our data centers around the world. Construction in progress also includes the ongoing construction to expand our corporate headquarters in Menlo Park, California. Interest capitalized during the periods presented was not material.