v3.26.1
Commitments and Contingent Liabilities (Summary of Commitments and Contingent Liabilities) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Standby Letters of Credit      
Commitments and Contingent Liabilities [Line Items]      
Guarantee on letters of credit $ 1,500    
Standby Uncommitted Letters Of Credit      
Commitments and Contingent Liabilities [Line Items]      
Guarantee on letters of credit 500    
Commitments | Commercial Mortgage Loans      
Commitments and Contingent Liabilities [Line Items]      
Total outstanding mortgage loan commitments 2,318   $ 1,851
Portion of commitment where prearrangement to sell to investor exists 570   352
Allowance for credit losses 5   5
Change in allowance for credit losses 0 $ 0  
Expected to be funded from the GA and other operations outside the SA      
Commitments and Contingent Liabilities [Line Items]      
Commitments to purchase investment (excluding commercial mortgage loans) 13,078   13,205
Expected to be funded from separate accounts      
Commitments and Contingent Liabilities [Line Items]      
Commitments to purchase investment (excluding commercial mortgage loans) 369   339
Indemnification | Securities Lending and Securities Repurchase Transactions      
Commitments and Contingent Liabilities [Line Items]      
Indemnification provided to certain clients for securities lending and securities repurchase transactions 4,978   4,459
Fair value of related collateral associated with above indemnifications 5,090   4,558
Accrued liability associated with guarantee 0   0
Indemnification | Securities Repurchase Transactions      
Commitments and Contingent Liabilities [Line Items]      
Indemnification provided to certain clients for securities lending and securities repurchase transactions 0   0
Indemnification | Serviced Mortgage Loans      
Commitments and Contingent Liabilities [Line Items]      
Maximum exposure under indemnification agreements for mortgage loans serviced by the Company 3,846   3,717
First-loss exposure portion of above 1,104   1,068
Accrued liability associated with guarantee 25   24
Allowance for credit losses 10   11
Change in allowance for credit losses 1 0  
Guarantees of Asset Values      
Commitments and Contingent Liabilities [Line Items]      
Guaranteed value of third-parties’ assets 75,016   75,883
Fair value of collateral supporting these assets 73,266   73,511
Asset (liability) associated with guarantee, carried at fair value 0   0
Other Guarantees      
Commitments and Contingent Liabilities [Line Items]      
Other guarantees where amount can be determined 290   290
Accrued liability associated with guarantee 31   $ 31
Purchase Investments      
Commitments and Contingent Liabilities [Line Items]      
Change in allowance for credit losses $ 0 $ 0