v3.26.1
ORGANIZATION (Details)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Apr. 03, 2025
USD ($)
shares
Apr. 01, 2025
Feb. 24, 2025
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
shares
Sep. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
reporting_segment
shares
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Jul. 10, 2025
shares
Jun. 16, 2025
Organization Basis Of Presentation [Line Items]                      
Number of reportable segments | reporting_segment             3        
Loss on novation             $ 13 $ 499      
Increase (decrease) in remeasurement of liability for future policy benefits       $ 15   $ 13 6 15      
Decrease in amounts due from reinsurers             966 562      
Assets       $ 334,657     $ 334,657   $ 317,990    
RGA Reinsurance Company                      
Organization Basis Of Presentation [Line Items]                      
Percentage of loans receivable, fair value disclosure   75.00%                  
Assets         $ 11,600            
Investment gains (losses), net         1,100            
Direct insurance liabilities ceded         12,300            
Ceded reserves related to the non-insulated (“NI”) modco offset by NI modco payable         334            
Deferred gain loss on reinsurance         593            
Residual liability closed block         154            
Separate account, liability, ceded         $ 14,100            
AB Holding                      
Organization Basis Of Presentation [Line Items]                      
Maximum units available to purchase (in shares) | shares 19.7   46.0                
Price per unit (in dollars per share) | $ / shares     $ 38.50                
Aggregate purchase price $ 758   $ 1,800                
Percentage of issued and outstanding units 17.90%                    
Alliance Bernstein                      
Organization Basis Of Presentation [Line Items]                      
Economic interest in Subsidiary       68.00%     68.00%   68.00%    
Available for exchange, shares | shares       4.8     4.8     19.7  
Alliance Bernstein | RGA Reinsurance Company                      
Organization Basis Of Presentation [Line Items]                      
Economic interest in Subsidiary                     70.00%
Novation                      
Organization Basis Of Presentation [Line Items]                      
Loss on novation               499      
Increase in Pre tax AOCI               263      
Total Impact loss               236      
Reduction of purchase MRB asset               2,000      
Reduction of liabilities for MRBs               1,600      
Decrease in reinsurance deposit liability               183      
Increase in policyholders’ account balance               33      
Increase (decrease) in remeasurement of liability for future policy benefits               458      
Decrease in amounts due from reinsurers               $ 432