v3.25.3
Investments (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Investments, Debt and Securities [Line Items]          
Impairment of equity method investment $ 0 $ 0 $ 0 $ 0  
Net income (losses) from unconsolidated investees 24,000,000 $ 1,000,000 73,000,000 $ 7,000,000  
Fair value, recurring          
Investments, Debt and Securities [Line Items]          
Securities with readily determinable fair value $ 49,000,000   $ 49,000,000    
OCC          
Investments, Debt and Securities [Line Items]          
Equity method investment, ownership percentage 40.00%   40.00%   40.00%
Foreign government debt securities          
Investments, Debt and Securities [Line Items]          
Trading securities $ 43,000,000   $ 43,000,000   $ 171,000,000