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Property and Equipment, Net
6 Months Ended
Jun. 30, 2011
Property and Equipment, Net [Abstract]  
Property and Equipment, Net
6.  Property and Equipment, Net
 
Property and equipment, net, consisted of:
 
                                                 
    June 30, 2011     December 31, 2010  
          Accumulated
                Accumulated
       
(in $ millions)   Cost     depreciation     Net     Cost     depreciation     Net  
 
Capitalized software
    590       (264 )     326       573       (256 )     317  
Furniture, fixtures and equipment
    229       (132 )     97       215       (125 )     90  
Building and leasehold improvements
    15       (9 )     6       15       (9 )     6  
Construction in progress
    28             28       71             71  
                                                 
      862       (405 )     457       874       (390 )     484  
                                                 
 
The Company recorded depreciation expense of $34 million and $31 million during the three months ended June 30, 2011 and 2010, respectively. The Company recorded depreciation expense of $67 million and $56 million during the six months ended June 30, 2011 and 2010, respectively.
 
As of June 30, 2011 and December 31, 2010, the Company had capital lease assets of $59 million and $47 million, respectively, included within furniture, fixtures and equipment. Construction in progress as of June 30, 2011 and December 31, 2010 include $2 million and $6 million, respectively, of capitalized interest.