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Loans And The Allowance For Credit Losses (Modifications By Class And Segment) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 411 | $ 887
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.43% | 0.90%
Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 321 | $ 696
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.33% | 0.71%
Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 2 | $ 142
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.14%
Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 24 | $ 12
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.02% | 0.01%
us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 37
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.04%
Other Loan Modification type |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 30 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.03% |
Contractual Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 34 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.04% |
Commercial |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 53 | $ 561
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.10% | 1.00%
Commercial | Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 49 | $ 384
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.09% | 0.68%
Commercial | Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 140
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.25%
Commercial | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 1 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00%
Commercial | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 37
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.07%
Commercial | Other Loan Modification type |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 3 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.01% |
Commercial | Contractual Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Investor Real Estate |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 172 | $ 213
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 1.98% | 2.41%
Investor Real Estate | Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 111 | $ 213
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 1.28% | 2.41%
Investor Real Estate | Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00%
Investor Real Estate | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00%
Investor Real Estate | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00%
Investor Real Estate | Other Loan Modification type |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 27 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.31% |
Investor Real Estate | Contractual Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 34 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.39% |
Consumer |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 186 | $ 113
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.56% | 0.34%
Consumer | Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 161 | $ 99
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.49% | 0.29%
Consumer | Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 2 | $ 2
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.01% | 0.01%
Consumer | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 23 | $ 12
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.07% | 0.03%
Consumer | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00%
Consumer | Other Loan Modification type |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Consumer | Contractual Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Commercial And Industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 50 | $ 555
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.10% | 1.09%
Commercial And Industrial [Member] | Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 46 | $ 379
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.09% | 0.75%
Commercial And Industrial [Member] | Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 139
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.27%
Commercial And Industrial [Member] | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 1 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00%
Commercial And Industrial [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 37
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.07%
Commercial And Industrial [Member] | Other Loan Modification type |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 3 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.01% |
Commercial And Industrial [Member] | Contractual Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Commercial Real Estate Mortgage - Owner-Occupied [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 3 | $ 3
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.05% | 0.06%
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 3 | $ 3
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.05% | 0.05%
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00%
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00%
Commercial Real Estate Mortgage - Owner-Occupied [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00%
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Other Loan Modification type |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Contractual Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Commercial Real Estate Construction - Owner-Occupied [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 3
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.81%
Commercial Real Estate Construction - Owner-Occupied [Member] | Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 2
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.67%
Commercial Real Estate Construction - Owner-Occupied [Member] | Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 1
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.15%
Commercial Real Estate Construction - Owner-Occupied [Member] | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00%
Commercial Real Estate Construction - Owner-Occupied [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00%
Commercial investor real estate mortgage [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 172 | $ 213
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 2.62% | 3.23%
Commercial investor real estate mortgage [Member] | Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 111 | $ 213
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 1.69% | 3.23%
Commercial investor real estate mortgage [Member] | Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00%
Commercial investor real estate mortgage [Member] | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00%
Commercial investor real estate mortgage [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00%
Commercial investor real estate mortgage [Member] | Other Loan Modification type |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 27 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.42% |
Commercial investor real estate mortgage [Member] | Contractual Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 34 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.52% |
Residential First Mortgage [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 164 | $ 99
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.82% | 0.49%
Residential First Mortgage [Member] | Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 156 | $ 94
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.78% | 0.46%
Residential First Mortgage [Member] | Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 2 | $ 2
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.01% | 0.01%
Residential First Mortgage [Member] | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 6 | $ 3
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.03% | 0.02%
Residential First Mortgage [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00%
Residential First Mortgage [Member] | Other Loan Modification type |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Residential First Mortgage [Member] | Contractual Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Home Equity Lines of Credit[Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 10 | $ 5
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.30% | 0.13%
Home Equity Lines of Credit[Member] | Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 1 | $ 1
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.02% | 0.02%
Home Equity Lines of Credit[Member] | Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00%
Home Equity Lines of Credit[Member] | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 9 | $ 4
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.29% | 0.11%
Home Equity Lines of Credit[Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00%
Home Equity Lines of Credit[Member] | Other Loan Modification type |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Home Equity Lines of Credit[Member] | Contractual Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Home Equity Loan [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 12 | $ 9
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.51% | 0.35%
Home Equity Loan [Member] | Extended Maturity |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 4 | $ 4
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.17% | 0.17%
Home Equity Loan [Member] | Payment Deferral |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00%
Home Equity Loan [Member] | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 8 | $ 5
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.34% | 0.18%
Home Equity Loan [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00%
Home Equity Loan [Member] | Other Loan Modification type |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |
Home Equity Loan [Member] | Contractual Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |

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