v3.25.4
Other Assets - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Schedule Of Other Assets [Line Items]      
Accumulated depreciation and amortization $ 15,170,000,000 $ 13,640,000,000  
Property, leasehold improvements and equipment $ 7,474,000,000 $ 8,024,000,000  
Amortization period - capitalized costs of software developed or obtained for internal use 3 years 3 years  
Noncash lease transaction $ 319,000,000 $ 167,000,000 $ 333,000,000
Operating lease, impairment loss 0 0 0
Investments in qualified affordable housing projects 4,123,000,000 3,456,000,000  
Building and Building Improvements      
Schedule Of Other Assets [Line Items]      
Property, leasehold improvements and equipment 6,550,000,000 6,570,000,000  
Asset & Wealth Management      
Schedule Of Other Assets [Line Items]      
Assets held for sale 124,000,000 517,000,000  
Asset & Wealth Management | Land, Buildings and Improvements      
Schedule Of Other Assets [Line Items]      
Asset impairment charges $ 184,000,000 $ 228,000,000 1,460,000,000
Platform Solutions And Asset And Wealth Management | Capitalized Software      
Schedule Of Other Assets [Line Items]      
Asset impairment charges     $ 118,000,000