v3.26.1
Insurance Liabilities (Future Policy Benefits Information by Product) (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]        
Liability for Future Policy Benefit, before Reinsurance $ 31,940 $ 31,974    
Future policy benefits 31,940   $ 32,025  
Term and Whole Life Insurance        
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]        
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 2,310 2,728 2,504 $ 2,808
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance 2,575 3,030 2,747 3,161
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Model Refinements     0 3
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     (58) (11)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change     2,689 3,153
Liability for Future Policy Benefit, Expected Net Premium, Issuance 6 8    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income 47 55    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected (167) (186)    
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax (265) (302)    
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]        
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 4,805 5,267 5,053 5,325
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance 5,325 5,822 5,513 5,989
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Model Refinements     0 2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     (90) (14)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change     5,423 5,977
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance 6 9    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense 99 109    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment (203) (273)    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (520) (555)    
Liability for Future Policy Benefit, before Reinsurance 2,495 2,539    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance 25 27    
Future policy benefits $ 2,470 $ 2,512    
Liability for Future Policy Benefit, Weighted-Average Duration 6 years 10 months 24 days 7 years 4 months 24 days    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 3.91% 3.92%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.29% 5.15%    
Liability for Future Policy Benefit, Gross Premium Income $ 241 $ 269    
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance 4,848 5,663    
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance 3,625 4,175    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance 7,108 7,896    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Discounted, before Reinsurance 5,325 5,822    
Income Annuities        
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]        
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 0 0 0 0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance 0 0 0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Model Refinements     0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     0 0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Net Premium, Issuance 0 0    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income 0 0    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected 0 0    
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax 0 0    
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]        
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 3,989 3,866 3,985 3,763
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance 4,338 4,193 4,272 4,161
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Model Refinements     0 0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     (14) (27)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change     4,258 4,134
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance 212 185    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense 84 80    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment (216) (206)    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (349) (327)    
Liability for Future Policy Benefit, before Reinsurance 3,989 3,866    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance 32 32    
Future policy benefits $ 3,957 $ 3,834    
Liability for Future Policy Benefit, Weighted-Average Duration 7 years 6 months 7 years 9 months 18 days    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 4.14% 4.08%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.38% 5.25%    
Liability for Future Policy Benefit, Gross Premium Income $ 287 $ 235    
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance 0 0    
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance 0 0    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance 6,079 5,900    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Discounted, before Reinsurance 4,338 4,193    
Structured Settlement and Pension Risk Transfer Annuities        
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]        
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change 0 0 0 0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance 0 0 0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Model Refinements     0 0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     0 0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change     0 0
Liability for Future Policy Benefit, Expected Net Premium, Issuance 0 0    
Liability for Future Policy Benefit, Expected Net Premium, Interest Income 0 0    
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected 0 0    
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax 0 0    
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]        
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change 5,798 6,053 6,009 6,118
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance 6,506 6,731 6,635 6,876
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Model Refinements     1 0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience     2 (24)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change     $ 6,638 $ 6,852
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance 0 0    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense 143 148    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment (275) (269)    
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax (708) (678)    
Liability for Future Policy Benefit, before Reinsurance 5,798 6,053    
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance 53 59    
Future policy benefits $ 5,745 $ 5,994    
Liability for Future Policy Benefit, Weighted-Average Duration 11 years 6 months 11 years 6 months    
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate 4.47% 4.46%    
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.64% 5.54%    
Liability for Future Policy Benefit, Gross Premium Income $ 0 $ 0    
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance 0 0    
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance 0 0    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance 12,554 13,031    
Liability for Future Policy Benefit, Expected Future Policy Benefit, Discounted, before Reinsurance $ 6,506 $ 6,731