XML 117 R103.htm IDEA: XBRL DOCUMENT v3.25.1
Commitments and Contingencies - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Loss Contingencies [Line Items]    
Impairment of right-of-use asset $ 0  
Pledged Collateral 2,041 $ 2,007
Possible losses in excess of amounts accrued 25  
Potential future loss 93  
Federal Home Loan Bank | Line of Credit    
Loss Contingencies [Line Items]    
Non-putable funding agreements issued to FHLB 1,299 $ 1,249
Acquisition of mortgage loans    
Loss Contingencies [Line Items]    
Amount of purchase commitments 224  
Purchase of limited partnership and private placement investments    
Loss Contingencies [Line Items]    
Amount of purchase commitments 1,731  
Purchase of limited partnership and private placement investments | VOEs    
Loss Contingencies [Line Items]    
Amount of purchase commitments $ 411