Annual report pursuant to Section 13 and 15(d)

Property, Software and Equipment (Details)

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Property, Software and Equipment (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross $ 3,223 $ 2,506  
Less: accumulated depreciation (1,102) (800)  
Property, software and equipment, net 2,121 1,706  
Depreciation expense 342 237 $ 161
Computer software      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 1,018 757  
Building      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 778 614  
Furniture and office equipment      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 457 335  
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 390 291  
Computer hardware      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross 378 308  
Land      
Property, Plant and Equipment [Line Items]      
Property, software and equipment, gross $ 202 $ 201