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Basis of Preparation and Summary of Significant Accounting Policies - Additional Information (Detail) - TRY (₺)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2014
Dec. 20, 2018
Feb. 16, 2018
Jan. 01, 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 ₺ 2,069,142,000 ₺ 1,787,116,000 ₺ 1,490,961,000            
Discount rate used for calculating employee termination benefit 4.41% 3.33%              
Percentage of revenues comprised 7.25%                
Turkcell Finansman A.S. [member]                  
Disclosure of basis of preparation and summary of significant accounting policies [line items]                  
Financial loan sold         ₺ 56,716,000 ₺ 90,272,000   ₺ 89,607,000 ₺ 87,589,000
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 ₺ 376,765,000 ₺ 257,866,000              
Right of use assets [member]                  
Disclosure of basis of preparation and summary of significant accounting policies [line items]                  
Prepaid lease expenses accounted for under prepaid expenses before the application of IFRS 16 ₺ 542,179,000                
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 ₺ 5,434,000 4,732,000              
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%                
Crimea [member]                  
Disclosure of basis of preparation and summary of significant accounting policies [line items]                  
Impairment Loss       ₺ 19,897,000          
Donetsk and Luhansk [member]                  
Disclosure of basis of preparation and summary of significant accounting policies [line items]                  
Impairment Loss ₺ 0 ₺ 10,872,000              
Belarusian Telecom [member] | Special GSM and UMTS services licenses [member]                  
Disclosure of basis of preparation and summary of significant accounting policies [line items]                  
Service licenses acquired, life 10 years                
Additional contractual life of service license 10 years                
Receivables from financial services [member]                  
Disclosure of basis of preparation and summary of significant accounting policies [line items]                  
Increase in provision for receivables from financial services recognized under retained earnings             ₺ (52,951,000)