v3.25.4
Summary of Significant Accounting Policies (Components of Fixed Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]      
Fixed assets, gross $ 2,498 $ 2,397  
Less: accumulated depreciation and amortization (1,669) (1,538)  
Fixed assets, net 829 859 $ 882
Furniture and equipment      
Property, Plant and Equipment [Line Items]      
Fixed assets, gross 710 696  
Land and buildings      
Property, Plant and Equipment [Line Items]      
Fixed assets, gross 363 364  
Leasehold and building improvements      
Property, Plant and Equipment [Line Items]      
Fixed assets, gross $ 1,425 $ 1,337