v3.26.1
Variable Interest Entities (Narrative) (Detail) - VariableInterestEntities
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Variable Interest Entity, Primary Beneficiary [Member] | Structured Finance and International Insurance [Member]        
Variable Interest Entity [Line Items]        
Number of variable interest entities consolidated 0 0 0 0