v3.26.1
Investments (Mortgage Loans by Maturity Date) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Financing Receivable, before Allowance for Credit Loss $ 12,097 $ 11,268
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total 100.00% 100.00%
Commercial Real Estate    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Financing Receivable, before Allowance for Credit Loss $ 11,494 $ 10,821
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total 95.00% 96.00%
Residential Real Estate    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Financing Receivable, before Allowance for Credit Loss $ 603 $ 447
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total 100.00% 100.00%
Due within five years | Commercial Real Estate    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Financing Receivable, before Allowance for Credit Loss $ 4,955 $ 4,563
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total 43.10% 42.20%
Due within five years | Residential Real Estate    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Financing Receivable, before Allowance for Credit Loss $ 249 $ 184
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total 41.30% 41.20%
Due after five years through ten years | Commercial Real Estate    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Financing Receivable, before Allowance for Credit Loss $ 5,609 $ 5,225
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total 48.80% 48.30%
Due after five years through ten years | Residential Real Estate    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Financing Receivable, before Allowance for Credit Loss $ 0 $ 0
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total 0.00% 0.00%
Due after ten years | Commercial Real Estate    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Financing Receivable, before Allowance for Credit Loss $ 930 $ 1,033
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total 8.10% 9.50%
Due after ten years | Residential Real Estate    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Financing Receivable, before Allowance for Credit Loss $ 354 $ 263
Mortgage Loans On Real Estate Commercial And Consumer Net Percentage Of Total 58.70% 58.80%