v3.26.3
Basis of Financial Statements - Recent Developments (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Nov. 05, 2026
Mar. 16, 2026
Mar. 31, 2026
Sep. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2023
Dec. 31, 2025
Debt Instrument                    
Gain (loss) on disposition of business             $ 7 $ 0    
Goodwill, written off related to sale of business unit             $ 51      
Preferred stock dividends declared (in usd per share)       $ 0.8594   $ 0.8594 $ 2.5782 $ 2.5782    
Preferred stock, par value (in usd per share)       0.001     0.001     $ 0.001
Dividends declared (in usd per share)       $ 0.25   $ 0.22 $ 0.75 $ 0.66    
Distribution Investments and Affiliates | Commission Fees Paid                    
Debt Instrument                    
Commissions paid       $ 20   $ 12 $ 52 $ 44    
Subsequent Event                    
Debt Instrument                    
Preferred stock dividends declared (in usd per share) $ 0.8594                  
Dividends declared (in usd per share) $ 0.26                  
Subsequent Event | F and G Segment | 6.875% Series A Mandatory Convertible Preferred Stock                    
Debt Instrument                    
Preferred stock, dividend rate, percentage 6.875%                  
Preferred stock, par value (in usd per share) $ 0.001                  
Preferred stock, liquidation preference per share (in usd per share) $ 50.00                  
Ancient Financial Holdings, LP                    
Debt Instrument                    
Ownership percentage of acquiree prior to acquisition     19.90%   19.90%          
Ancient Financial Holdings, LP                    
Debt Instrument                    
Proceeds from divestiture of businesses     $ 102              
Gain (loss) on disposition of business             14      
F&G Life Re purchase price true-up       (5)            
Goodwill, written off related to sale of business unit       51            
Ancient Financial Holdings, LP | Previously Reported                    
Debt Instrument                    
Goodwill, written off related to sale of business unit         $ 56          
Ancient Financial Holdings, LP | Scenario, Adjustment                    
Debt Instrument                    
Gain (loss) on disposition of business       (7)            
Disposal group, including discontinued operation, net assets       12     12      
2026 Repurchase Program | Common equity securities                    
Debt Instrument                    
Stock repurchase program, term   3 years                
Stock repurchase program, authorized amount   $ 100   12     12      
2026 Repurchase Program | Common equity securities | Subsequent Event                    
Debt Instrument                    
Stock repurchase program, term 3 years                  
Stock repurchase program, authorized amount $ 100                  
2023 Repurchase Program | Common equity securities                    
Debt Instrument                    
Stock repurchase program, term                 3 years  
Stock repurchase program, authorized amount       $ 0     $ 0   $ 50