v3.26.1
Investments - Investments - Past-Due Mortgage Loans (Details) - Commercial Loan [Member] - USD ($)
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Financing Receivable, Past Due [Line Items]            
Financing Receivable, before Allowance for Credit Loss $ 7,311,000,000   $ 6,886,000,000      
Financing Receivable, Allowance for Credit Loss 49,000,000 $ 49,000,000 49,000,000 $ 43,000,000 $ 43,000,000 $ 44,000,000
Financial Asset, Past Due            
Financing Receivable, Past Due [Line Items]            
Financing Receivable, before Allowance for Credit Loss 8,000,000          
Financing Receivable, Allowance for Credit Loss 4,000,000          
Number of Past Due Commercial Mortgage Loans $ 1   $ 0