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Basis of preparation and summary of material accounting policies - Evolution of CPI (Details) - Turkiye | 12 Months Ended | 36 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Hyperinflation |  |  |  |  |  |  |  |
Annual Index | 2,684.55 | 1,859.38 | 1,128.45 | 686.95 | 2,684.55 | 1,859.38 | 1,128.45 | 686.95
Average index | 2,360.03 | 1,488.91 | 967.71 | 561.61 |  |  |  |
Inflation rate | 44.40% | 64.80% | 64.30% | 36.10% | 290.80% | 268.30% | 156.20% | 74.40%

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