v3.26.1
F&G Reinsurance - Schedule of Assets Held in Support of Reserves Associated with Coinsurance with Funds Withheld Agreement (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Effects of Reinsurance [Line Items]    
Funds withheld for reinsurance receivable, at fair value $ 16,487 $ 14,191
Funds Held under Reinsurance Agreements, Liability (16,487) (14,191)
Fixed maturities, AFS    
Effects of Reinsurance [Line Items]    
Funds withheld for reinsurance receivable, at fair value 14,204 12,530
Equity securities    
Effects of Reinsurance [Line Items]    
Funds withheld for reinsurance receivable, at fair value 65 60
Derivative instruments    
Effects of Reinsurance [Line Items]    
Funds withheld for reinsurance receivable, at fair value 76 55
Mortgage loans    
Effects of Reinsurance [Line Items]    
Funds withheld for reinsurance receivable, at fair value 217 65
Investments in unconsolidated affiliates    
Effects of Reinsurance [Line Items]    
Funds withheld for reinsurance receivable, at fair value 936 752
Policy loans    
Effects of Reinsurance [Line Items]    
Funds withheld for reinsurance receivable, at fair value 1 1
Cash and cash equivalents    
Effects of Reinsurance [Line Items]    
Funds withheld for reinsurance receivable, at fair value 920 702
Accrued interest receivable, included in Prepaid expenses and other assets    
Effects of Reinsurance [Line Items]    
Funds withheld for reinsurance receivable, at fair value 152 146
Accounts payable and accrued liabilities and reconciling items    
Effects of Reinsurance [Line Items]    
Funds Held under Reinsurance Agreements, Liability $ (84) $ (120)