v3.26.1
Other Assets - Carrying Value of Goodwill (Detail) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Schedule Of Intangible Assets And Goodwill [Line Items]    
Goodwill $ 6,590 $ 5,949
Investment banking    
Schedule Of Intangible Assets And Goodwill [Line Items]    
Goodwill 267 267
FICC    
Schedule Of Intangible Assets And Goodwill [Line Items]    
Goodwill 269 269
Equities    
Schedule Of Intangible Assets And Goodwill [Line Items]    
Goodwill 2,647 2,647
Asset management    
Schedule Of Intangible Assets And Goodwill [Line Items]    
Goodwill 2,098 1,457
Wealth management    
Schedule Of Intangible Assets And Goodwill [Line Items]    
Goodwill $ 1,309 $ 1,309