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Property and Equipment
 9 Months Ended
Sep. 30, 2024
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and Equipment
 
Property and equipment, net consists of the following (in millions):
 September 30, 2024December 31, 2023
Computer equipment$2,642 $2,136 
Computer software107 96 
Leasehold and other improvements316 292 
Furniture and fixtures88 86 
Construction in progress43 33 
Property and equipment, gross3,196 2,643 
Less: Accumulated depreciation(1,478)(1,285)
Property and equipment, net$1,718 $1,358 

Construction in progress consists of costs primarily related to leasehold and other improvements. Depreciation expense for the three months ended September 30, 2024 and 2023 was $96 million and $98 million, respectively, and for the nine months ended September 30, 2024 and 2023 was $264 million and $267 million, respectively.