v3.25.2
Fair Value Measurements (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Carrying value of investment $ 286   $ 286   $ 257
Exchange traded equity securities 22   22   19
(Loss) gain on equity securities (1)   2 $ 2  
Equity investments without readily determinable market value 17   17   16
Private Equity Investments          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Carrying value of investment 209   209   182
Equity method investment income 8 $ 1 10    
Commitments for potential future investments 94   94    
Private Insurance and Consulting          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Carrying value of investment $ 77   $ 77   $ 75
Minimum          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Revenue target period (in years)     2 years 2 years  
Maximum          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Revenue target period (in years)     4 years 4 years