v3.26.1
Variable Interest Entities and Securitizations - Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Variable Interest Entity [Line Items]      
Amortization method qualified affordable housing investments, amortization $ 179 $ 159  
Affordable housing tax credits 179 $ 153  
Amortization method qualified affordable housing investments 6,200   $ 6,200
Qualified affordable housing investments, commitment 2,400   2,500
Assets 682,905   669,009
Unconsolidated      
Variable Interest Entity [Line Items]      
Assets 7,888   7,922
VIE, reporting entity involvement, maximum loss exposure 7,888   7,922
Consolidated      
Variable Interest Entity [Line Items]      
Assets 31,632   35,070
Affordable housing entities | Unconsolidated      
Variable Interest Entity [Line Items]      
Assets 6,517   6,485
Variable interest entity, nonconsolidated 17,700   18,200
VIE, reporting entity involvement, maximum loss exposure 6,517   6,485
Affordable housing entities | Consolidated      
Variable Interest Entity [Line Items]      
Assets 428   469
Entities that provide capital to low-income and rural communities | Unconsolidated      
Variable Interest Entity [Line Items]      
Assets 44   48
VIE, reporting entity involvement, maximum loss exposure 44   48
Entities that provide capital to low-income and rural communities | Consolidated      
Variable Interest Entity [Line Items]      
Assets 2,998   2,942
Other      
Variable Interest Entity [Line Items]      
Amortization method qualified affordable housing investments 1,100    
Qualified affordable housing investments, commitment 146    
Other | Unconsolidated      
Variable Interest Entity [Line Items]      
Assets 1,327   1,389
VIE, reporting entity involvement, maximum loss exposure 1,327   1,389
Other | Consolidated      
Variable Interest Entity [Line Items]      
Assets $ 0   $ 0