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Allowance For Credit Losses (Loans by Class Modified byTDRs) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) obligor
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 1,360
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 385
Increase in Allowance at Modification | $ 10
Commercial Portfolio Segment [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 61
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 182
Increase in Allowance at Modification | $ 0
Total Investor Real Estate [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 5
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 48
Increase in Allowance at Modification | $ 0
Consumer Portfolio Segment [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 1,294
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 155
Increase in Allowance at Modification | $ 10
Commercial And Industrial [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 50
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 174
Increase in Allowance at Modification | $ 0
Commercial Real Estate Mortgage - Owner-Occupied [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 11
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 5
Increase in Allowance at Modification | $ 0
Commercial Real Estate Construction - Owner-Occupied [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 0
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 3
Increase in Allowance at Modification | $ 0
Commercial investor real estate mortgage [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 5
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 48
Increase in Allowance at Modification | $ 0
Commercial Investor Real Estate Construction [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 0
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 0
Increase in Allowance at Modification | $ 0
Residential First Mortgage [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 983
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 135
Increase in Allowance at Modification | $ 6
Home Equity Lines of Credit[Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 94
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 6
Increase in Allowance at Modification | $ 4
Home Equity Loan [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 208
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 14
Increase in Allowance at Modification | $ 0
Consumer Credit Card Financing Receivable [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 4
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 0
Increase in Allowance at Modification | $ 0
Other consumer- exit portfolios |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 0
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 0
Increase in Allowance at Modification | $ 0
Other Consumer [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Obligors | obligor | 5
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 0
Increase in Allowance at Modification | $ 0

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