v3.25.1
Merger Agreement (Details) - USD ($)
$ / shares in Units, $ in Millions
Jul. 29, 2025
Mar. 31, 2025
Dec. 31, 2024
Voting Ordinary Shares      
Business Combination [Line Items]      
Common shares, par value (in dollars per share)   $ 1 $ 1
Forecast      
Business Combination [Line Items]      
Payments of capital distribution $ 500    
Forecast | Enstar Group Limited | Sixth Street Partners, LLC      
Business Combination [Line Items]      
Business acquisition, share price (in dollars per share) $ 338    
Business combination, consideration transferred $ 5,100    
Business acquisition, extension period 6 months    
Business acquisition, termination costs $ 265    
Business acquisition, termination costs, specified debt event of default 97    
Forecast | Enstar Group Limited | Sixth Street Partners, LLC | Minimum      
Business Combination [Line Items]      
Business acquisition, transaction costs 90    
Forecast | Enstar Group Limited | Sixth Street Partners, LLC | Maximum      
Business Combination [Line Items]      
Business acquisition, transaction costs $ 105    
Forecast | Voting Ordinary Shares      
Business Combination [Line Items]      
Common shares, par value (in dollars per share) $ 1.00