v3.26.1
Variable Interest Entities and Securitizations - Additional Information (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Variable Interest Entity [Line Items]      
Amortization method qualified affordable housing investments, amortization $ 374 $ 339  
Affordable housing tax credits 444 $ 376  
Amortization method qualified affordable housing investments 6,600   $ 6,200
Qualified affordable housing investments, commitment 2,700   2,500
Assets 673,835   669,009
Unconsolidated      
Variable Interest Entity [Line Items]      
Assets 8,390   7,922
VIE, reporting entity involvement, maximum loss exposure 8,390   7,922
Consolidated      
Variable Interest Entity [Line Items]      
Assets 29,965   35,070
Affordable housing entities | Unconsolidated      
Variable Interest Entity [Line Items]      
Assets 6,947   6,485
Variable interest entity, nonconsolidated 18,200   18,200
VIE, reporting entity involvement, maximum loss exposure 6,947   6,485
Affordable housing entities | Consolidated      
Variable Interest Entity [Line Items]      
Assets 441   469
Entities that provide capital to low-income and rural communities | Unconsolidated      
Variable Interest Entity [Line Items]      
Assets 40   48
VIE, reporting entity involvement, maximum loss exposure 40   48
Entities that provide capital to low-income and rural communities | Consolidated      
Variable Interest Entity [Line Items]      
Assets 3,546   2,942
Other investments      
Variable Interest Entity [Line Items]      
Amortization method qualified affordable housing investments 746    
Qualified affordable housing investments, commitment 162    
Other investments | Unconsolidated      
Variable Interest Entity [Line Items]      
Assets 1,403   1,389
VIE, reporting entity involvement, maximum loss exposure 1,403   1,389
Other investments | Consolidated      
Variable Interest Entity [Line Items]      
Assets $ 0   $ 0