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v3.8.0.1

Basis of Preparation and Summary of Significant Accounting Policies - Additional Information (Detail) - TRY (₺) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Aug. 22, 2017 | Apr. 14, 2014
Disclosure of basis of preparation and summary of significant accounting policies [line items] |  |  |  |  |  |
Impairment of assets |  |  |  | ₺ 19,897,000 |  |
Financial loan sold |  |  |  |  | ₺ 89,607,000 | ₺ 87,589,000
Acquisition of shares |  |  | ₺ (267,920,000) |  |  |
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 | ₺ 1,787,116,000 | ₺ 1,490,961,000 | 1,356,612,000 |  |  |
Percentage of net earnings to gross earning | 1.40% |  |  |  |  |
Percentage of revenues comprised | 7.25% |  |  |  |  |
Revenue commission percentage | 15.00% |  |  |  |  |
Revenue from operations | ₺ 15,115,816,000 | ₺ 12,883,974,000 | 11,972,443,000 |  |  |
Expected credit loss period | 12 months |  |  |  |  |
Top of range [member] |  |  |  |  |  |
Disclosure of basis of preparation and summary of significant accounting policies [line items] |  |  |  |  |  |
Percentage of voting rights in associates | 20.00% |  |  |  |  |
Bottom of range [member] |  |  |  |  |  |
Disclosure of basis of preparation and summary of significant accounting policies [line items] |  |  |  |  |  |
Percentage of voting rights in associates | 50.00% |  |  |  |  |
Employee payments | ₺ 6,000,000 |  |  |  |  |
Maritime Affairs and Communications [member] |  |  |  |  |  |
Disclosure of basis of preparation and summary of significant accounting policies [line items] |  |  |  |  |  |
Revenue from operations | ₺ 257,866,000 |  |  |  |  |
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 |  |  |  |  |
Donetsk and Luhansk [member] |  |  |  |  |  |
Disclosure of basis of preparation and summary of significant accounting policies [line items] |  |  |  |  |  |
Impairment Loss | ₺ 10,872,000 |  |  |  |  |
Retained earnings [member] |  |  |  |  |  |
Disclosure of basis of preparation and summary of significant accounting policies [line items] |  |  |  |  |  |
Acquisition of shares |  |  | ₺ (929,013,000) |  |  |
Lifecell [member] |  |  |  |  |  |
Disclosure of basis of preparation and summary of significant accounting policies [line items] |  |  |  |  |  |
Ownership interest percentage |  |  | 100.00% |  |  |

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