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Basis of Preparation and Summary of Significant Accounting Policies - Additional Information (Detail) - TRY (₺)
₺ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2014
Dec. 30, 2019
Jul. 24, 2019
Dec. 20, 2018
Feb. 16, 2018
Aug. 22, 2017
Apr. 14, 2017
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Depreciation method property plant and equipment decrease in inflation rate in subsequent years led the three-year cumulative rate as of the end of 2014 to decrease to 65%.                  
Three-year cumulative inflation rate       65.00%            
Salary calculation period 30 days                  
Employee payments ₺ 2,548,195 ₺ 2,069,142 ₺ 1,787,116              
Discount rate used for calculating employee termination benefit 3.60% 4.41%                
Percentage of revenues comprised 7.25%                  
Financial assets   ₺ 255,019 221,190              
Finance income ₺ 297,450 1,677,114 597,246              
Finance costs ₺ (2,025,118) (3,364,072) (920,112)              
Credit risk [member]                    
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Finance costs   (34,253) (15,119)              
Turkcelle Odeme [Member]                    
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Finance income   177,203 ₺ 109,337              
Trade receivables from related party   32,012                
Turkcell Finansman A.S. [member]                    
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Financial loan sold         ₺ 69,183 ₺ 45,983 ₺ 56,716 ₺ 90,272 ₺ 89,607 ₺ 87,589
Inteltek Internet Teknoloji Yatirim Ve Danismanlik A.S [member]                    
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Percentage of net earnings to gross earning 1.40%                  
Azerinteltek [member]                    
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Revenue commission percentage 15.00%                  
Maritime Affairs and Communications [member]                    
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Revenue from operations ₺ 191,235 376,765                
Bottom of range [member]                    
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Percentage of voting rights in associates 20.00%                  
Employee payments ₺ 6,380 ₺ 5,434                
Bottom of range [member] | Credit risk [member]                    
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Credit risk percentage hedging instrument 80.00%                  
Top of range [member]                    
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Percentage of voting rights in associates 50.00%                  
Top of range [member] | Credit risk [member]                    
Disclosure of basis of preparation and summary of significant accounting policies [line items]                    
Credit risk percentage hedging instrument 125.00%