v3.25.2
Investments (Allowance for Credit Losses) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance, beginning of period $ 632 $ 514 $ 574 $ 460
Addition to (release of) allowance for expected losses 71 53 129 105
Write-downs charged against the allowance (150)   (150)  
Change in foreign exchange 1 (3) 1 (1)
Allowance, end of period 554 564 554 564
Commercial Mortgage Loans        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance, beginning of period 460 492 407 443
Addition to (release of) allowance for expected losses (11) 0 42 47
Write-downs charged against the allowance 0   0  
Change in foreign exchange 1 (3) 1 (1)
Allowance, end of period 450 489 450 489
Agricultural Property Loans        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance, beginning of period 123 21 121 16
Addition to (release of) allowance for expected losses 85 3 87 8
Write-downs charged against the allowance (150)   (150)  
Change in foreign exchange 0 0 0 0
Allowance, end of period 58 24 58 24
Residential Property Loans        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance, beginning of period 0 0 0 0
Addition to (release of) allowance for expected losses 0 0 0 0
Write-downs charged against the allowance 0   0  
Change in foreign exchange 0 0 0 0
Allowance, end of period 0 0 0 0
Other collateralized loans        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance, beginning of period 34 0 32 0
Addition to (release of) allowance for expected losses (2) 33 0 33
Write-downs charged against the allowance 0   0  
Change in foreign exchange 0 0 0 0
Allowance, end of period 32 33 32 33
Uncollateralized Loans        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance, beginning of period 15 1 14 1
Addition to (release of) allowance for expected losses (1) 17 0 17
Write-downs charged against the allowance 0   0  
Change in foreign exchange 0 0 0 0
Allowance, end of period $ 14 $ 18 $ 14 $ 18