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Related Parties - Summary of Financial Assets and Liabilities with Related Parties (Detail) ₺ in Thousands, € in Thousands, $ in Thousands | Dec. 31, 2023 TRY (₺) | Dec. 31, 2022 TRY (₺) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 EUR (€)
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Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties | ₺ 30,065,061 | ₺ 24,472,049 |  |
Loss Allowance |  |  |  |
Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties | (31,883) | (34,559) |  |
Banks - Time deposits | Gross Carrying Amount |  |  |  |
Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties | 31,369,567 | 23,362,376 |  |
Banks - Time deposits | Gross Carrying Amount | Turkiye Vakiflar Bankasi TAO |  |  |  |
Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties | 8,674,948 | 9,471,793 |  |
Banks - Demand deposits | Gross Carrying Amount |  |  |  |
Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties | 720,613 | 385,761 |  |
Currency Protected Time Deposit | Gross Carrying Amount |  |  |  |
Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties | 6,173,875 | 2,240,337 |  |
Currency Deposit Account | Turkiye Vakiflar Bankasi TAO |  |  |  |
Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties |  |  | $ 102,941 | € 85,000
Receivables from reverse repo | Gross Carrying Amount |  |  |  |
Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties |  | 6,103,453 |  |
Bank borrowings |  |  |  |
Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties | (7,064,169) | (6,789,667) |  |
Debt securities issued |  |  |  |
Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties | (956,914) | (589,058) |  |
Lease liabilities |  |  |  |
Financial assets and liabilities with related parties |  |  |  |
Financial assets (liabilities) with related parties | ₺ (146,028) | ₺ (206,594) |  |

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