v3.25.2
Investments - Allowance for Losses for Commercial Mortgage Loans (Details) - Commercial Portfolio Segment - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Dec. 31, 2023
Allowance for Loan and Lease Losses [Roll Forward]      
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest $ 16 $ 19 $ 22
Credit losses on mortgage loans for which credit losses were not previously recorded 5 0  
Increase (decrease) on mortgage loans with allowance recorded in previous period 1 0  
Premium Receivable, Credit Loss Expense (Reversal) 25 22  
Write-offs $ (9) $ (3)