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Material accounting policies - Internal credit risk grades (Details) - Current | Dec. 31, 2023
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Aaa – Ba1 | 1 - 4 |
Disclosure Of Significant Accounting Policies [Line Items] |
Percentage of credit loss rate | 0.09%
Ba2 – B3 | 5 - 6 |
Disclosure Of Significant Accounting Policies [Line Items] |
Percentage of credit loss rate | 2.28%
Caa1 - Caa3 | 7 |
Disclosure Of Significant Accounting Policies [Line Items] |
Percentage of credit loss rate | 7.81%
Ca | 8 - 9 |
Disclosure Of Significant Accounting Policies [Line Items] |
Percentage of credit loss rate | 34.52%
C | 10 |
Disclosure Of Significant Accounting Policies [Line Items] |
Percentage of credit loss rate | 100.00%

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