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Loans and Leases - Troubled Debt Restructuring Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Troubled debt restructurings loans | $ 206 | $ 307
Loans Held For Sale, Residential Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Troubled debt restructurings loans | $ 35 | $ 42
Consumer | Consumer real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
TDRS maturities | 30 years |
Consumer | Consumer real estate | Heloc And Real Estate Installment Classes |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
TDR, reduction of interest rate by increment, basis points | 25.00% |
Modified interest rate increase | 2.00% |
Consumer | Permanent Mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
TDR, reduction of interest rate by increment, basis points | 25.00% |
Modified interest rate increase | 1.00% |
TDRS maturities | 40 years |
Consumer | Credit Card and Other | Credit card |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Credit card workout program, granted rate reduction | 0.00% |
Minimum | Consumer | Consumer real estate | Heloc And Real Estate Installment Classes |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Modified interest rate | 1.00% |
Modified interest rate time period | 5 years |
Minimum | Consumer | Permanent Mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Modified interest rate | 2.00% |
Modified interest rate time period | 5 years |
Minimum | Consumer | Credit Card and Other | Credit card |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Payment reductions, time period | 6 months |
Minimum | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Forbearance agreements time period | 6 months |
Maximum | Consumer | Consumer real estate | Heloc And Real Estate Installment Classes |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Modified interest rate time period | 5 years |
Maximum | Consumer | Permanent Mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Modified interest rate time period | 5 years |
Maximum | Consumer | Credit Card and Other | Credit card |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Payment reductions, time period | 1 year |
Credit card workout program, term extension | 5 years |
Maximum | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Forbearance agreements time period | 12 months |

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