v3.25.2
Variable Interest Entities (Narrative) (Detail) - Variable Interest Entity, Primary Beneficiary [Member]
$ in Millions
3 Months Ended
Jun. 30, 2025
VariableInterestEntities
Mar. 31, 2025
VariableInterestEntities
Jun. 30, 2024
USD ($)
VariableInterestEntities
Mar. 31, 2024
VariableInterestEntities
Recorded Due To Credit Losses in AOCI [Member]        
Variable Interest Entity [Line Items]        
Net realized gains (losses) related to deconsolidation | $     $ (9)  
Structured Finance and International Insurance [Member]        
Variable Interest Entity [Line Items]        
Number of variable interest entities deconsolidated | VariableInterestEntities 0 0 1 0
Net realized gains (losses) related to deconsolidation | $     $ (14)  
Number of variable interest entities consolidated | VariableInterestEntities 0 0 0 0