Annual report pursuant to Section 13 and 15(d)

VARIABLE INTEREST ENTITIES - Low Income Housing Tax Credit Partnerships (Details)

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VARIABLE INTEREST ENTITIES - Low Income Housing Tax Credit Partnerships (Details) - Variable Interest Entity, Not Primary Beneficiary - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Affordable Housing Tax Credit Partnerships      
Variable Interest Entity [Line Items]      
Affordable housing tax credit investments $ 3,335 $ 2,891  
Less: amortization (1,038) (855)  
Net affordable housing tax credit investments 2,297 2,036  
Unfunded commitments 1,279 1,260  
Tax credits and other tax benefits recognized 260 203 $ 144
Proportional Amortization Method      
Variable Interest Entity [Line Items]      
Proportional amortization expense included in provision for income taxes $ 205 $ 170 $ 126