v3.25.2
Commitments and Contingent Liabilities (Narrative Excluding Litigation) (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Commitments | Commercial Mortgage Loans          
Commitments and Contingent Liabilities [Line Items]          
Allowance for credit losses $ 4   $ 4   $ 2
Change in allowance for credit losses 2 $ 0 2 $ 0  
Purchase Investments          
Commitments and Contingent Liabilities [Line Items]          
Change in allowance for credit losses 0 0 $ 0 0  
Indemnification | Securities Lending and Securities Repurchase Transactions          
Commitments and Contingent Liabilities [Line Items]          
Guarantor obligations, liquidation proceeds, percentage     102.00%    
Indemnification | Securities Repurchase Transactions          
Commitments and Contingent Liabilities [Line Items]          
Guarantor obligations, liquidation proceeds, percentage     95.00%    
Indemnification | Serviced Mortgage Loans          
Commitments and Contingent Liabilities [Line Items]          
Allowance for credit losses 11   $ 11   12
Change in allowance for credit losses 0 $ (1) (1) (1)  
Mortgages subject to loss-sharing arrangements $ 26,327   $ 26,327   $ 25,763
Weighted-average debt service coverage ratio of mortgages subject to loss-sharing arrangements 1.99   1.99   1.95
Weighted-average loan-to-value ratio of mortgages subject to loss-sharing arrangements 62.00%   62.00%   62.00%
Losses related to indemnifications that were settled     $ 0 $ 0  
Indemnification | Minimum | Serviced Mortgage Loans          
Commitments and Contingent Liabilities [Line Items]          
Percentage share of losses incurred on certain loans serviced     4.00%    
Indemnification | Maximum | Serviced Mortgage Loans          
Commitments and Contingent Liabilities [Line Items]          
Percentage share of losses incurred on certain loans serviced     20.00%