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Loans And The Allowance For Credit Losses (Modifications By Class And Segment) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 204 | $ 380 | $ 353 | $ 703
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.21% | 0.38% | 0.36% | 0.71%
Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 133 | $ 317 | $ 272 | $ 495
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.14% | 0.32% | 0.28% | 0.45%
Payment Deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 1 | $ 11 | $ 2 | $ 151
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.01% | 0.00% | 0.15%
Extended Maturity and Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 41 | $ 4 | $ 50 | $ 9
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.04% | 0.00% | 0.05% | 0.01%
us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 48 |  | $ 48
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.05% |  | 0.05%
Other Loan Modification type |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 29 |  | $ 29 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.03% |  | 0.03% |
Commercial Portfolio Segment [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 56 | $ 257 | $ 88 | $ 462
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.10% | 0.45% | 0.16% | 0.81%
Commercial Portfolio Segment [Member] | Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 23 | $ 200 | $ 55 | $ 266
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.04% | 0.35% | 0.10% | 0.47%
Commercial Portfolio Segment [Member] | Payment Deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 9 | $ 0 | $ 148
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.02% | 0.00% | 0.26%
Commercial Portfolio Segment [Member] | Extended Maturity and Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 33 | $ 0 | $ 33 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.06% | 0.00% | 0.06% | 0.00%
Commercial Portfolio Segment [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 48 |  | $ 48
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.08% |  | 0.08%
Commercial Portfolio Segment [Member] | Other Loan Modification type |  |  |  |
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% |
Total Investor Real Estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 101 | $ 91 | $ 128 | $ 153
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 1.14% | 1.04% | 1.46% | 1.75%
Total Investor Real Estate [Member] | Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 72 | $ 91 | $ 99 | $ 153
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.82% | 1.04% | 1.13% | 1.75%
Total Investor Real Estate [Member] | Payment Deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0 | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00% | 0.00% | 0.00%
Total Investor Real Estate [Member] | Extended Maturity and Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0 | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00% | 0.00% | 0.00%
Total Investor Real Estate [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |  |  |
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%
Total Investor Real Estate [Member] | Other Loan Modification type |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 29 |  | $ 29 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.33% |  | 0.33% |
Consumer Portfolio Segment [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 47 | $ 32 | $ 137 | $ 88
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.14% | 0.10% | 0.41% | 0.26%
Consumer Portfolio Segment [Member] | Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 38 | $ 26 | $ 118 | $ 76
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.11% | 0.08% | 0.36% | 0.23%
Consumer Portfolio Segment [Member] | Payment Deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 1 | $ 2 | $ 2 | $ 3
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.01% | 0.01% | 0.01%
Consumer Portfolio Segment [Member] | Extended Maturity and Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 8 | $ 4 | $ 17 | $ 9
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.02% | 0.01% | 0.05% | 0.03%
Consumer Portfolio Segment [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |  |  |
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%
Consumer Portfolio Segment [Member] | Other Loan Modification type |  |  |  |
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 And Industrial [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 54 | $ 254 | $ 84 | $ 451
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.11% | 0.49% | 0.17% | 0.87%
Commercial And Industrial [Member] | Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 21 | $ 197 | $ 51 | $ 255
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.04% | 0.38% | 0.10% | 0.49%
Commercial And Industrial [Member] | Payment Deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 9 | $ 0 | $ 148
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.02% | 0.00% | 0.29%
Commercial And Industrial [Member] | Extended Maturity and Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 33 | $ 0 | $ 33 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.07% | 0.00% | 0.07% | 0.00%
Commercial And Industrial [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  | $ 48 |  | $ 48
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.09% |  | 0.09%
Commercial And Industrial [Member] | Other Loan Modification type |  |  |  |
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] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 2 | $ 3 | $ 4 | $ 9
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.04% | 0.06% | 0.09% | 0.18%
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 2 | $ 3 | $ 4 | $ 9
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.04% | 0.06% | 0.08% | 0.18%
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 | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00% | 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 | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00% | 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 |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00% |  | 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 |  | $ 0 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% |  | 0.00% |
Commercial Real Estate Construction - Owner-Occupied [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount |  |  |  | $ 2
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  |  |  | 0.86%
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 |  |  |  | 0.71%
Commercial Real Estate Construction - Owner-Occupied [Member] | Payment Deferral |  |  |  |
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] | 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 | $ 101 | $ 89 | $ 128 | $ 151
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 1.54% | 1.39% | 1.95% | 2.35%
Commercial investor real estate mortgage [Member] | Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 72 | $ 89 | $ 99 | $ 151
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 1.10% | 1.39% | 1.51% | 2.35%
Commercial investor real estate mortgage [Member] | Payment Deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0 | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00% | 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 | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00% | 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 |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage |  | 0.00% |  | 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 | $ 29 |  | $ 29 |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.44% |  | 0.44% |
Commercial Investor Real Estate Construction [Member] |  |  |  |
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 |  | 0.08% |  | 0.08%
Commercial Investor Real Estate Construction [Member] | Extended Maturity |  |  |  |
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 |  | 0.08% |  | 0.08%
Commercial Investor Real Estate Construction [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 Construction [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 Construction [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |  |  |
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%
Residential First Mortgage [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 40 | $ 28 | $ 121 | $ 78
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.20% | 0.14% | 0.60% | 0.39%
Residential First Mortgage [Member] | Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 37 | $ 25 | $ 115 | $ 72
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.18% | 0.12% | 0.57% | 0.36%
Residential First Mortgage [Member] | Payment Deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 1 | $ 2 | $ 2 | $ 3
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.01% | 0.01% | 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 | $ 2 | $ 1 | $ 4 | $ 3
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.01% | 0.01% | 0.02% | 0.02%
Residential First Mortgage [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |  |  |
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%
Residential First Mortgage [Member] | Other Loan Modification type |  |  |  |
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] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 4 | $ 2 | $ 7 | $ 3
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.13% | 0.05% | 0.22% | 0.10%
Home Equity Lines of Credit[Member] | Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0 | $ 0 | $ 1
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00% | 0.01% | 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 | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00% | 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 | $ 4 | $ 2 | $ 7 | $ 2
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.13% | 0.04% | 0.21% | 0.08%
Home Equity Lines of Credit[Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |  |  |
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] | Other Loan Modification type |  |  |  |
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] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 3 | $ 2 | $ 9 | $ 7
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.13% | 0.09% | 0.37% | 0.29%
Home Equity Loan [Member] | Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 1 | $ 1 | $ 3 | $ 3
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.05% | 0.04% | 0.13% | 0.13%
Home Equity Loan [Member] | Payment Deferral |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, amount | $ 0 | $ 0 | $ 0 | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.00% | 0.00% | 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 | $ 2 | $ 1 | $ 6 | $ 4
Financing Receivable, Excluding Accrued Interest, Modified in Period, Percentage | 0.08% | 0.05% | 0.24% | 0.15%
Home Equity Loan [Member] | us-gaap_ExtendedMaturityAndPaymentDeferralMember |  |  |  |
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] | Other Loan Modification type |  |  |  |
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% |

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- Definition Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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