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CREDIT QUALITY AND THE ALLOWANCE FOR CREDIT LOSSES - Troubled Debt Restructuring Activity (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Contracts | contract | 5,846
Amortized Cost | $ 501
Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 68
Term Extension |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 124
Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | $ 309
Commercial |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Contracts | contract | 29
Amortized Cost | $ 26
Commercial | Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 0
Commercial | Term Extension |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 26
Commercial | Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | $ 0
Commercial | Commercial and industrial |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Contracts | contract | 29
Amortized Cost | $ 26
Commercial | Commercial and industrial | Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 0
Commercial | Commercial and industrial | Term Extension |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 26
Commercial | Commercial and industrial | Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | $ 0
Retail |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Contracts | contract | 5,817
Amortized Cost | $ 475
Retail | Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 68
Retail | Term Extension |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 98
Retail | Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | $ 309
Retail | Residential mortgages |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Contracts | contract | 1,884
Amortized Cost | $ 408
Retail | Residential mortgages | Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 52
Retail | Residential mortgages | Term Extension |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 96
Retail | Residential mortgages | Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | $ 260
Retail | Home equity |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Contracts | contract | 381
Amortized Cost | $ 25
Retail | Home equity | Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 4
Retail | Home equity | Term Extension |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 2
Retail | Home equity | Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | $ 19
Retail | Automobile |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Contracts | contract | 601
Amortized Cost | $ 6
Retail | Automobile | Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 2
Retail | Automobile | Term Extension |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 0
Retail | Automobile | Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | $ 4
Retail | Education |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Contracts | contract | 631
Amortized Cost | $ 25
Retail | Education | Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 0
Retail | Education | Term Extension |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 0
Retail | Education | Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | $ 25
Retail | Other retail |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Contracts | contract | 2,320
Amortized Cost | $ 11
Retail | Other retail | Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 10
Retail | Other retail | Term Extension |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | 0
Retail | Other retail | Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost | $ 1

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