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v3.23.3

Allowance for credit losses - Allowance for loan losses - Additional Information (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($)
Financing Receivable |  |  |  |
Accumulated loans modified to borrowers under financial difficulties |  |  |  | $ 1,644,647,000
Outstanding balance of loans modified for borrowers under financial difficulties that were subject to payment default | $ 5,000,000 | $ 6,000,000 |  |
Term Extension |  |  |  |
Financing Receivable |  |  |  |
Outstanding balance of loans modified for borrowers under financial difficulties that were subject to payment default | 4,000,000 | 5,000,000 |  |
Combination of reduction of interest rate and extension of maturity |  |  |  |
Financing Receivable |  |  |  |
Outstanding balance of loans modified for borrowers under financial difficulties that were subject to payment default | 1,000,000 | 1,000,000 |  |
Note A / B Split |  |  |  |
Financing Receivable |  |  |  |
Aggregated unpaid principal balance | 6,600,000 | 6,600,000 | $ 2,700,000 |
Loans restructuring charge offs |  | $ 0 | $ 0 |
Number of loans |  | 5 | 3 |
Commercial |  |  |  |
Financing Receivable |  |  |  |
Accumulated loans modified to borrowers under financial difficulties |  |  |  | 324,425,000
Outstanding commitments to lend additional funds to debtors owing receivables whose terms have been modified in troubled debt restructurings | 17,000,000 | $ 17,000,000 |  | $ 12,000,000
PB |  |  |  |
Financing Receivable |  |  |  |
Reduction in ACL | $ (15,000,000) |  |  |

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- Definition Amount of other addition (reduction) in allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
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