v3.26.3
Reinsurance - Narrative (Details)
$ in Millions
9 Months Ended
Jun. 01, 2020
USD ($)
Sep. 30, 2026
USD ($)
treaty
Dec. 31, 2025
USD ($)
Effects of Reinsurance [Line Items]      
Reinsurance recoverable, allowance for credit losses   $ 32 $ 30
Athene | Letter of Credit      
Effects of Reinsurance [Line Items]      
Maximum borrowing capacity $ 1,100    
Trust account assets   $ 66  
Athene      
Effects of Reinsurance [Line Items]      
Reinsurance quota share basis 100.00%    
Reinsurance agreement, ceding commission $ 1,200    
SRZ      
Effects of Reinsurance [Line Items]      
Number of retro treaties | treaty   3  
Coinsurance percentage   100.00%