Quarterly report pursuant to Section 13 or 15(d)

VIEs - Low Income Housing Tax Credit Partnerships (Details)

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VIEs - Low Income Housing Tax Credit Partnerships (Details) - Variable Interest Entity - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Affordable Housing Tax Credit Partnerships          
Variable Interest Entity [Line Items]          
Affordable housing tax credit investments $ 2,517   $ 2,517   $ 2,376
Less: amortization (796)   (796)   (724)
Net affordable housing tax credit investments 1,721   1,721   1,652
Unfunded commitments 997   997   $ 949
Tax credits and other tax benefits recognized 53 $ 44 107 $ 77  
Proportional Amortization Method          
Variable Interest Entity [Line Items]          
Proportional amortization expense included in provision for income taxes $ 44 $ 30 $ 86 $ 58