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 $ 701 $ 503
Provision (release) 64 126
Charge-offs, net of recoveries (54) 0
Balance, end of period 711 629
Commercial Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance, beginning of period 436 312
Provision (release) 100 113
Charge-offs, net of recoveries (44) 0
Balance, end of period 492 425
Residential Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance, beginning of period 184 128
Provision (release) (39) 6
Charge-offs, net of recoveries (1) 0
Balance, end of period 144 134
Agricultural Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance, beginning of period 81 63
Provision (release) 3 7
Charge-offs, net of recoveries (9) 0
Balance, end of period $ 75 $ 70