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Segment Information - Summary of Geographical Information (Detail) - TRY (₺) ₺ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of geographical areas [line items] |  |  |
Total revenue | ₺ 17,632,064 | ₺ 14,285,561 | ₺ 12,769,415
Non-current assets | 19,913,363 | 18,249,312 |
Turkey [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Total revenue | 16,431,863 | 13,321,503 | 11,779,345
Non-current assets | 18,098,228 | 16,548,162 |
Ukraine [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Total revenue | 664,643 | 573,951 | 571,630
Non-current assets | 1,408,783 | 1,211,789 |
Belarus [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Total revenue | 209,884 | 149,005 | 141,219
Non-current assets | 138,371 | 291,498 |
Azerbaijan [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Total revenue | 174,021 | 108,329 | 145,654
Non-current assets | 13,663 | 13,563 |
Turkish Republic of Northern Cyprus [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Total revenue | 148,637 | 129,785 | 125,668
Non-current assets | 141,802 | 117,243 |
Germany [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Total revenue | 3,016 | 2,988 | ₺ 5,899
Non-current assets | ₺ 112,516 | ₺ 67,057 |

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