v3.26.1
Investments - Schedule of Loans Modified to Borrowers Experiencing Financial Difficulty (Details) - Commercial mortgage loans - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]        
Amortized Cost Basis   $ 0 $ 0 $ 0
Percent of Total Class   0.00%    
Extension of term   42 months    
30-89 Days Past Due        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Amortized Cost Basis $ 10   10 0
Percent of Total Class 0.11%      
90+ Days Past Due        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Amortized Cost Basis     $ 0 $ 0