Annual report pursuant to Section 13 and 15(d)

VIEs - Low Income Housing Tax Credit Partnerships (Details)

v3.20.4
VIEs - Low Income Housing Tax Credit Partnerships (Details) - Variable Interest Entity, Not Primary Beneficiary - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Affordable Housing Tax Credit Partnerships      
Variable Interest Entity [Line Items]      
Affordable housing tax credit investments $ 1,568 $ 1,242  
Less: amortization (612) (515)  
Net affordable housing tax credit investments 956 727  
Unfunded commitments 500 332  
Tax credits and other tax benefits recognized 113 98 $ 92
Proportional Amortization Method      
Variable Interest Entity [Line Items]      
Proportional amortization expense included in provision for income taxes $ 97 $ 84 $ 79