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Derivative financial instruments (Tables) | 12 Months Ended
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Dec. 31, 2024
Statement |
Summary of Fair Value of Derivative Financial Instruments | The fair value of derivative financial instruments at 31 December 2024 and 2023 are attributable to the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 31 December 2024 | ​ | 31 December 2023
​ |  | Assets |  | Liabilities |  | Assets |  | Liabilities
Held for trading | ​ | 1,964,325 | ​ | 501,322 |  | 877,115 |  | 453,068
Derivatives used for hedge accounting | ​ | - | ​ | - |  | 1,884,713 |  | 70,181
​ | ​ | 1,964,325 | ​ | 501,322 |  | 2,761,828 |  | 523,249
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 31 December 2024 | ​ | 31 December 2023 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Change in | ​ | Change in
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | intrinsic value | ​ | intrinsic value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | of outstanding | ​ | of outstanding
​ | ​ | Notional | ​ | ​ | ​ | Notional | ​ | ​ | ​ | ​ | ​ | ​ | ​ | hedging | ​ | hedging
​ | ​ | value | ​ | ​ | ​ | value | ​ | ​ | ​ | ​ | ​ | ​ | ​ | instruments | ​ | instruments
​ | ​ | in original | ​ | ​ | ​ | in original | ​ | ​ | ​ | ​ | ​ | Hedge | ​ | since 1 January | ​ | since 1 January
Currency |  | currency |  | Fair value |  | currency |  | Fair value |  | Maturity date |  | ratio |  | 2024 |  | 2023
Participating cross currency swap contracts |  | ​ |  | ​ |  | ​ |  | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​
EUR Contracts | ​ | - | ​ | - | ​ | 167,000 | ​ | 374,358 | ​ | October 2025 | ​ | 01:01 | ​ | - | ​ | (6,087)
EUR Contracts | ​ | - | ​ | - | ​ | 38,057 | ​ | 35,393 | ​ | April 2026 | ​ | 01:01 | ​ | - | ​ | (277)
USD Contracts | ​ | - | ​ | - | ​ | 124,186 | ​ | 818,486 | ​ | April 2026 | ​ | 01:01 | ​ | - | ​ | (970)
Cross currency swap contracts |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​
RMB Contracts | ​ | - | ​ | - | ​ | 81,162 | ​ | 447,275 | ​ | April 2026 | ​ | 01:01 | ​ | - | ​ | 190,846
Interest rate swap contracts | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
USD Contracts | ​ | - | ​ | - | ​ | 90,135 | ​ | 139,020 | ​ | April 2026 | ​ | 01:01 | ​ | - | ​ | -
Derivatives used for hedge accounting |  | ​ | ​ | - | ​ | ​ | ​ | 1,814,532 |  | ​ | ​ | ​ | ​ | ​ | ​ | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 31 December 2024 | ​ | 31 December 2023
​ |  | Notional |  | ​ |  | ​ |  | Notional |  | ​ |  | ​
​ | ​ | value in | ​ | ​ | ​ | ​ | ​ | value in | ​ | ​ | ​ | ​
​ | ​ | original | ​ | Fair | ​ | ​ | ​ | original | ​ | ​ | ​ | ​
Currency | ​ | currency | ​ | value | ​ | Maturity | ​ | currency | ​ | Fair value | ​ | Maturity
Cross currency swap contracts | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
USD Contracts | ​ | 4,000 | ​ | 113,643 | ​ | November 2025 | ​ | 8,000 | ​ | 267,255 | ​ | November 2025
RMB Contracts | ​ | 67,141 | ​ | 273,946 | ​ | April 2026 | ​ | 19,425 | ​ | 102,561 | ​ | April 2026
Currency forward contracts | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
USD Contracts | ​ | 405,000 | ​ | (61,287) | ​ | January-December 2025 | ​ | 334,900 | ​ | (178,088) | ​ | March 2024
EUR Contracts | ​ | 20,000 | ​ | (796) | ​ | November 2025 | ​ | 10,000 | ​ | (28,740) | ​ | January 2024
FX swap contracts | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
RMB Contracts | ​ | 290,949 | ​ | 26,277 | ​ | February 2025 | ​ | - | ​ | - | ​ | -
EUR Contracts | ​ | 10,103 | ​ | (9,598) | ​ | January 2025 | ​ | - | ​ | - | ​ | -
USD Contracts | ​ | - | ​ | - | ​ | - | ​ | 353,972 | ​ | (214,564) | ​ | February 2024
Participating cross currency swap contracts | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
USD Contracts | ​ | 91,894 | ​ | 484,368 | ​ | November 2025 -April 2026 | ​ | 18,000 | ​ | 104,680 | ​ | November 2025
EUR Contracts | ​ | 156,539 | ​ | 563,282 | ​ | October 2025 - April 2026 | ​ | 40,060 | ​ | 362,496 | ​ | April 2026
Interest rate swap contracts |  | ​ |  | ​ | ​ | ​ |  | ​ | ​ | ​ |  | ​
USD Contracts | ​ | 108,911 | ​ | 73,168 | ​ | April 2026- April 2033 | ​ | 64,655 | ​ | 34,234 | ​ | April 2026
TL Contracts | ​ | - | ​ | - | ​ | - | ​ | 600,000 | ​ | (25,787) | ​ | Octomber 2026
Derivatives held for trading | ​ | ​ | ​ | 1,463,003 | ​ | ​ | ​ | ​ | ​ | 424,047 | ​ | ​
​
Summary of Fair Value of Financial Assets and Financial Liabilities | ​
​ | ​ | ​ | ​ | ​
​ |  | Fair Value hierarchy |  | Valuation Techniques
a) Participating cross currency swap contracts | ​ | Level 2 |  | Pricing models based on discounted cash present value of the estimated future cash flows based on observable yield curves and end period FX rates
b) FX swap, currency, interest swap and option contracts | ​ | Level 2 |  | Present value of the estimated future cash flows based on observable yield curves and end period FX rates
c) Currency forward contracts | ​ | Level 2 |  | Forward exchange rates at the balance sheet date
Interest rate risk and currency risk [member] |
Statement |
Summary of Cash Flow Sensitivity Analysis for Variable Rate Instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Profit or Loss | ​ | Equity, net of tax
​ | ​ | 100 bp | ​ | 100 bp | ​ | 100 bp | ​ | 100 bp
31 December 2024 |  | increase |  | decrease |  | increase |  | decrease
Participating cross currency swap contracts |  | - | ​ | - | ​ | - | ​ | -
Cross currency swap contracts |  | - | ​ | - | ​ | - | ​ | -
Cash Flow sensitivity (net) |  | - | ​ | - | ​ | - | ​ | -
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Profit or Loss | ​ | Equity, net of tax
​ | ​ | 100 bp | ​ | 100 bp | ​ | 100 bp | ​ | 100 bp
31 December 2023 |  | increase |  | decrease |  | increase |  | decrease
Participating cross currency swap contracts |  | (74,274) | ​ | 18,587 | ​ | 802,499 | ​ | 826,454
Cross currency swap contracts |  | 199,299 | ​ | 186,282 | ​ | (11,074) | ​ | (12,539)
Cash Flow sensitivity (net) |  | 125,025 | ​ | 204,869 | ​ | 791,425 | ​ | 813,915
​
Participating cross currency swap contracts [member] |
Statement |
Summary of Fair Value of Derivative Financial Instruments | Movements in the participating cross currency swap contracts for the years ended 31 December 2024 and 2023 are stated below, and participating cross currency swap contracts are transferred to Level 2 from Level 3 as of 31 December 2023.
​ | ​ | ​ | ​ | ​
​ | ​ | 31 December | ​ | 31 December
​ |  | 2024 |  | 2023
Opening balance |  | - |  | 2,727,971
Cash flow effect |  | - |  | (3,185,616)
Total gain/loss: |  | - |  | -
Gains recognized in profit or loss |  | - |  | 3,285,098
Inflation adjustments | ​ | - | ​ | (1,132,040)
Transfer to Level 2 | ​ | - | ​ | (1,695,413)
Closing balance |  | - | ​ | -

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