v3.26.1
Investments - Changes in Allowance for Credit Losses on Mortgage Loans on Real Estate (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Balance as of beginning-of-year $ 182  
Additions (reductions) from provision for credit loss expense (2) $ 1
Balance as of end-of-year 180  
Accrued interest receivable excluded from credit losses 113 101
Mortgage loans on real estate    
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Balance as of beginning-of-year 182 152
Additions (reductions) from provision for credit loss expense (2) 2
Additions from purchases of PCD mortgage loans on real estate 0 0
Reductions for mortgage loans on real estate charged off 0 0
Balance as of end-of-year 180 154
Credit loss (expense) benefit 1 1
Commercial    
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Balance as of beginning-of-year 113  
Balance as of end-of-year 116  
Commercial | Mortgage loans on real estate    
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Balance as of beginning-of-year 113 99
Additions (reductions) from provision for credit loss expense 3 (1)
Additions from purchases of PCD mortgage loans on real estate 0 0
Reductions for mortgage loans on real estate charged off 0 0
Balance as of end-of-year 116 98
Residential    
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Balance as of beginning-of-year 69  
Balance as of end-of-year 64  
Residential | Mortgage loans on real estate    
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Balance as of beginning-of-year 69 53
Additions (reductions) from provision for credit loss expense (5) 3
Additions from purchases of PCD mortgage loans on real estate 0 0
Reductions for mortgage loans on real estate charged off 0 0
Balance as of end-of-year $ 64 $ 56