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Property and Equipment - Summary of Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 2,104,601 $ 1,889,896
Accumulated depreciation and amortization 1,288,509 1,074,887
Property and equipment, net $ 816,092 815,009
Maximum    
Property, Plant and Equipment [Line Items]    
Useful Lives 10 years  
Computer hardware and software    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 1,101,248 974,490
Computer hardware and software | Minimum    
Property, Plant and Equipment [Line Items]    
Useful Lives 2 years  
Computer hardware and software | Maximum    
Property, Plant and Equipment [Line Items]    
Useful Lives 10 years  
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 622,771 554,252
Leasehold improvements | Minimum    
Property, Plant and Equipment [Line Items]    
Useful Lives 1 year  
Leasehold improvements | Maximum    
Property, Plant and Equipment [Line Items]    
Useful Lives 15 years  
Furniture and equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 260,551 243,880
Furniture and equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Useful Lives 1 year  
Furniture and equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Useful Lives 10 years  
Construction in progress    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 120,031 $ 117,274