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Financial assets - Other comprehensive income (Details) - Financial assets at fair value through other comprehensive income [member] - TRY (₺)
₺ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of financial assets [line items]    
Financial assets at fair value through other comprehensive income ₺ 1,427,811 ₺ 529,610
Level 2    
Disclosure of financial assets [line items]    
Financial assets at fair value through other comprehensive income   272,334
Description of valuation techniques used in fair value measurement, entity's own equity instruments Present value of the estimated future cash flows based on observable yield curves and period end FX rates  
Level 1    
Disclosure of financial assets [line items]    
Financial assets at fair value through other comprehensive income ₺ 1,427,811 ₺ 257,276
Description of valuation techniques used in fair value measurement, entity's own equity instruments Pricing models based on quoted market prices at the end of the reporting period.