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v3.22.4

Allowance for Credit Losses (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2022 USD ($) contract | Dec. 31, 2021 USD ($) contract | Dec. 31, 2020 USD ($) contract
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Accrued interest related to financial assets held at amortized cost | $ 214,000,000 | $ 117,400,000 |
Financial Asset, Amortized Cost, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Interest Receivable and Other Assets | Interest Receivable and Other Assets |
Nonaccrual loans with no related allowance for credit losses | $ 21,100,000 |  |
Loans reasonably expected to be modified into TDRs | 0 |  |
Provision for (reversal of) credit losses | 78,179,000 | $ (59,280,000) |
Loan net charge-offs | 20,300,000 |  |
Provision for credit losses | $ 410,000 | $ 17,000 |
TDRs, count | contract | 40 | 64 | 124
Foreclosed residential real estate properties | $ 1,600,000 |  |
TDRs, balance | $ 13,377,000 | $ 13,869,000 | $ 45,872,000
Weighted average extension term | 69 months | 83 months | 14 months
Weighted average decrease in stated interest rate | 0.88% | 1.37% | 1.29%
Interest-only payment terms | 8 months | 3 months | 12 months
Loan forgiveness | $ 0 | $ 0 | $ 453,000
Financing Receivable |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Loans modified in TDRs | $ 41,100,000 |  |
TDRs, count | contract | 191 |  |
Allowance for loan losses related to impaired loans | $ 871,000,000 |  |
Financing Receivable | Residential Real Estate |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Recorded investment, foreclosure proceedings in process | $ 59,500,000 | $ 9,600,000 |

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- Definition Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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- Definition Amount, after allowance for credit loss, of accrued interest on financial asset measured at amortized cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3A -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267960-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL120267845-210446 + Details
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