v3.26.1
Investments (Mortgage Loans Allowance for Credit Loss Rollforward by Portfolio Segment) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance, beginning of period $ 1,193 $ 800
Provision (release) 117 181
Charge-offs, net of recoveries (97) 0
Balance, end of period 1,213 981
Commercial Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance, beginning of period 807 537
Provision (release) 165 160
Charge-offs, net of recoveries (87) 0
Balance, end of period 885 697
Residential Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance, beginning of period 271 179
Provision (release) (50) 10
Charge-offs, net of recoveries (1) 0
Balance, end of period 220 189
Agricultural Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance, beginning of period 115 84
Provision (release) 2 11
Charge-offs, net of recoveries (9) 0
Balance, end of period $ 108 $ 95