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Loans and Related Allowance for Credit Losses (Financial Impact and TDRs by Concession Type) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Loans | loan | 10,866
Pre-TDR Recorded Investment | $ 525
Post-TDR Recorded Investment | 414
Principal Forgiveness |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Post-TDR Recorded Investment | 9
Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Post-TDR Recorded Investment | 181
Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Post-TDR Recorded Investment | $ 224
Commercial |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Loans | loan | 57
Pre-TDR Recorded Investment | $ 363
Post-TDR Recorded Investment | 269
Commercial | Principal Forgiveness |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Post-TDR Recorded Investment | 9
Commercial | Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Post-TDR Recorded Investment | 58
Commercial | Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Post-TDR Recorded Investment | $ 202
Consumer |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Number of Loans | loan | 10,809
Pre-TDR Recorded Investment | $ 162
Post-TDR Recorded Investment | 145
Consumer | Principal Forgiveness |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Post-TDR Recorded Investment |
Consumer | Interest Rate Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Post-TDR Recorded Investment | 123
Consumer | Other |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Post-TDR Recorded Investment | $ 22

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