v3.26.1
RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($)
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Related Party Transaction [Line Items]      
Investments $ 157,912,000,000   $ 110,044,000,000
Related Party      
Related Party Transaction [Line Items]      
Investments 12,200,000,000   13,400,000,000
Deposit assets 343,000,000   318,000,000
Related Party | Brookfield      
Related Party Transaction [Line Items]      
Private loans issued 4,100,000,000   4,300,000,000
Equity Commitment Agreement | Related Party      
Related Party Transaction [Line Items]      
Equity commitment 2,000,000,000.0    
Related party agreements and transactions 0 $ 0  
Brookfield Infrastructure Partners L.P, Loan Refinancing | Related Party      
Related Party Transaction [Line Items]      
Related party agreements and transactions 450,000,000    
Subsidiaries Investments, BAM Shares | Related Party      
Related Party Transaction [Line Items]      
Related party agreements and transactions   $ 3,500,000,000  
Brookfield Shares Received In Exchange Offer, Q4 2023 | Related Party | Brookfield      
Related Party Transaction [Line Items]      
Investments 2,000,000,000.0   2,100,000,000
BAM Shares Contributed Q2 2025 | Related Party | Brookfield      
Related Party Transaction [Line Items]      
Investments $ 2,900,000,000   $ 3,400,000,000