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Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - TRY (₺)
₺ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year ₺ 13,902,730 ₺ 12,458,491  
Additions net of depreciation 2,848,001 1,490,902  
Disposals (79,896) (59,830)  
Transfers (10,878) (4,841)  
Acquisitions through business combination 103,933    
Disposal of subsidiaries   (195)  
Impairment (expenses)/reversals (24,493) (4,185) ₺ (18,007)
Transfer to investment property (4,022) (1,253)  
Effects of movements in exchange rates 1,267,404 23,641  
Balance at end of year 18,002,779 13,902,730 12,458,491
Cost [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year 28,432,652 25,147,406  
Additions 5,772,400 3,912,283  
Disposals (511,216) (725,809)  
Transfers (10,878) (4,841)  
Acquisitions through business combination 103,933    
Disposal of subsidiaries   (20,596)  
Impairment (expenses)/reversals (20,000) (2)  
Transfer to investment property (14,021) (6,781)  
Effects of movements in exchange rates 4,672,079 130,992  
Balance at end of year 38,424,949 28,432,652 25,147,406
Cost [member] | Network infrastructure [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year 24,923,118 22,022,991  
Additions 1,415,616 818,989  
Disposals (435,571) (699,727)  
Transfers 4,084,711 2,671,001  
Disposal of subsidiaries   (15,536)  
Effects of movements in exchange rates 4,319,376 125,400  
Balance at end of year 34,307,250 24,923,118 22,022,991
Cost [member] | Land and buildings [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year 1,485,249 1,211,323  
Additions 40,466 68,667  
Disposals (10,191) (2,004)  
Transfers 185,428 212,943  
Transfer to investment property (14,021) (6,781)  
Effects of movements in exchange rates 33,470 1,101  
Balance at end of year 1,720,401 1,485,249 1,211,323
Cost [member] | Equipment, fixtures and fittings [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year 955,894 866,409  
Additions 87,930 93,428  
Disposals (25,762) (10,954)  
Transfers 16,858 8,961  
Acquisitions through business combination 27    
Disposal of subsidiaries   (3,482)  
Effects of movements in exchange rates 67,137 1,532  
Balance at end of year 1,102,084 955,894 866,409
Cost [member] | Motor vehicles [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year 44,999 44,518  
Additions 2,162 2,098  
Disposals (2,399) (1,690)  
Acquisitions through business combination 156    
Disposal of subsidiaries   (4)  
Effects of movements in exchange rates 6,220 77  
Balance at end of year 51,138 44,999 44,518
Cost [member] | Leasehold improvements [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year 342,093 335,837  
Additions 8,849 7,149  
Disposals (32,476) (62)  
Transfers 546 341  
Disposal of subsidiaries   (1,574)  
Effects of movements in exchange rates 10,746 402  
Balance at end of year 329,758 342,093 335,837
Cost [member] | Electricity production power plant [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Acquisitions through business combination 103,750    
Balance at end of year 103,750    
Cost [member] | Construction in progress [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year 681,299 666,328  
Additions 4,217,377 2,921,952  
Disposals (4,817) (11,372)  
Transfers (4,298,421) (2,898,087)  
Impairment (expenses)/reversals (20,000) (2)  
Effects of movements in exchange rates 235,130 2,480  
Balance at end of year 810,568 681,299 666,328
Accumulated depreciation, amortization and impairment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year (14,529,922) (12,688,915)  
Additions - depreciation (2,924,399) (2,421,381)  
Disposals 431,320 665,979  
Disposal of subsidiaries   20,401  
Impairment (expenses)/reversals (4,493) (4,183)  
Transfer to investment property 9,999 5,528  
Effects of movements in exchange rates (3,404,675) (107,351)  
Balance at end of year (20,422,170) (14,529,922) (12,688,915)
Accumulated depreciation, amortization and impairment [member] | Network infrastructure [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year (13,090,823) (11,382,813)  
Additions - depreciation (2,762,649) (2,270,537)  
Disposals 372,950 656,472  
Disposal of subsidiaries   15,536  
Impairment (expenses)/reversals (4,493) (4,183)  
Effects of movements in exchange rates (3,311,476) (105,298)  
Balance at end of year (18,796,491) (13,090,823) (11,382,813)
Accumulated depreciation, amortization and impairment [member] | Land and buildings [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year (354,312) (285,626)  
Additions - depreciation (82,528) (73,594)  
Disposals 3,804    
Transfer to investment property 9,999 5,528  
Effects of movements in exchange rates (20,388) (620)  
Balance at end of year (443,425) (354,312) (285,626)
Accumulated depreciation, amortization and impairment [member] | Equipment, fixtures and fittings [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year (717,871) (673,927)  
Additions - depreciation (66,229) (53,914)  
Disposals 21,141 7,865  
Disposal of subsidiaries   3,287  
Effects of movements in exchange rates (58,242) (1,182)  
Balance at end of year (821,201) (717,871) (673,927)
Accumulated depreciation, amortization and impairment [member] | Motor vehicles [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year (40,027) (37,840)  
Additions - depreciation (3,373) (3,714)  
Disposals 2,399 1,593  
Disposal of subsidiaries   4  
Effects of movements in exchange rates (6,104) (70)  
Balance at end of year (47,105) (40,027) (37,840)
Accumulated depreciation, amortization and impairment [member] | Leasehold improvements [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance at beginning of year (326,889) (308,709)  
Additions - depreciation (7,698) (19,622)  
Disposals 31,026 49  
Disposal of subsidiaries   1,574  
Effects of movements in exchange rates (8,465) (181)  
Balance at end of year (312,026) ₺ (326,889) ₺ (308,709)
Accumulated depreciation, amortization and impairment [member] | Electricity production power plant [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Additions - depreciation (1,922)    
Balance at end of year ₺ (1,922)