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Applicable laws and regulations - Schedule of classification of the loan portfolio by maturity profile based on Rule No.4-2013 (Details) - Loans - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Statement [Line Items] |  |
Corporation loan | $ 7,195,567 | $ 6,763,020
Loans and advances to banks | 2,713,068 | 2,965,267
Securities at FVOCI - Corporate debt |  |
Statement [Line Items] |  |
Corporation loan | 4,396,827 | 3,669,125
Private |  |
Statement [Line Items] |  |
Loans and advances to banks | 2,248,150 | 2,245,385
State-owned |  |
Statement [Line Items] |  |
Loans and advances to banks | 464,918 | 719,882
Sovereign |  |
Statement [Line Items] |  |
Sovereign | 85,672 | 128,628
Special Mention |  |
Statement [Line Items] |  |
Corporation loan | 32,342 | 0
Loans and advances to banks | 0 | 0
Special Mention | Securities at FVOCI - Corporate debt |  |
Statement [Line Items] |  |
Corporation loan | 32,342 | 0
Special Mention | Private |  |
Statement [Line Items] |  |
Loans and advances to banks | 0 | 0
Special Mention | State-owned |  |
Statement [Line Items] |  |
Loans and advances to banks | 0 | 0
Special Mention | Sovereign |  |
Statement [Line Items] |  |
Sovereign | 0 | 0
Current |  |
Statement [Line Items] |  |
Corporation loan | 7,185,460 | 6,732,913
Loans and advances to banks | 2,713,068 | 2,945,267
Current | Securities at FVOCI - Corporate debt |  |
Statement [Line Items] |  |
Corporation loan | 4,386,720 | 3,659,018
Current | Private |  |
Statement [Line Items] |  |
Loans and advances to banks | 2,248,150 | 2,225,385
Current | State-owned |  |
Statement [Line Items] |  |
Loans and advances to banks | 464,918 | 719,882
Current | Sovereign |  |
Statement [Line Items] |  |
Sovereign | 85,672 | 128,628
Loans Portfolio |  |
Statement [Line Items] |  |
Corporation loan | 7,195,567 | 6,763,020
Loans and advances to banks | 2,713,068 | 2,965,267
Loans Portfolio | Securities at FVOCI - Corporate debt |  |
Statement [Line Items] |  |
Corporation loan | 4,396,827 | 3,669,125
Loans Portfolio | Private |  |
Statement [Line Items] |  |
Loans and advances to banks | 2,248,150 | 2,245,385
Loans Portfolio | State-owned |  |
Statement [Line Items] |  |
Loans and advances to banks | 464,918 | 719,882
Loans Portfolio | Sovereign |  |
Statement [Line Items] |  |
Sovereign | 85,672 | 128,628
Past due |  |
Statement [Line Items] |  |
Corporation loan | 0 | 20,000
Loans and advances to banks | 0 | 20,000
Past due | Securities at FVOCI - Corporate debt |  |
Statement [Line Items] |  |
Corporation loan | 0 | 0
Past due | Private |  |
Statement [Line Items] |  |
Loans and advances to banks | 0 | 20,000
Past due | State-owned |  |
Statement [Line Items] |  |
Loans and advances to banks | 0 | 0
Past due | Sovereign |  |
Statement [Line Items] |  |
Sovereign | 0 | 0
Delinquent |  |
Statement [Line Items] |  |
Corporation loan | 10,107 | 10,107
Loans and advances to banks | 0 | 0
Delinquent | Securities at FVOCI - Corporate debt |  |
Statement [Line Items] |  |
Corporation loan | 10,107 | 10,107
Delinquent | Private |  |
Statement [Line Items] |  |
Loans and advances to banks | 0 | 0
Delinquent | State-owned |  |
Statement [Line Items] |  |
Loans and advances to banks | 0 | 0
Delinquent | Sovereign |  |
Statement [Line Items] |  |
Sovereign | $ 0 | $ 0

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