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Financial Instruments - Summary of Interest-Bearing Financial Instruments (Detail) - TRY (₺) ₺ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Disclosure of detailed information about financial instruments [line items] |  |
Carrying amount | ₺ 12,536,149 | ₺ 9,781,162
USD [member] | Time deposits [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 5.80% | 3.60%
Carrying amount | ₺ 2,590,025 | ₺ 2,817,650
USD [member] | Restricted cash [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Carrying amount | ₺ 64,503 |
USD [member] | Finance lease obligations [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 28.10% | 20.70%
Carrying amount | ₺ (41) | ₺ (80)
USD [member] | Debt securities in issue [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 5.80% | 5.80%
Carrying amount | ₺ (1,875,521) | ₺ (1,683,700)
USD [member] | Floating rate loans [member] | Variable rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 3.20% | 3.20%
Carrying amount | ₺ (2,880,615) | ₺ (1,984,533)
EUR [member] | Time deposits [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 2.20% | 2.00%
Carrying amount | ₺ 1,069,303 | ₺ 1,383,978
EUR [member] | Restricted cash [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Carrying amount | ₺ 118,983 |
EUR [member] | Finance lease obligations [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 3.40% | 3.40%
Carrying amount | ₺ (116,797) | ₺ (48,034)
EUR [member] | Trade and other payables [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate |  | 2.60%
Carrying amount |  | ₺ (1,522,615)
EUR [member] | Floating rate loans [member] | Variable rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 2.10% | 2.30%
Carrying amount | ₺ (5,511,579) | ₺ (3,593,110)
TL [member] | Time deposits [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 14.30% | 11.00%
Carrying amount | ₺ 436,224 | ₺ 1,243,843
TL [member] | Finance lease obligations [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 27.60% |
Carrying amount | ₺ (5,882) |
TL [member] | Unsecured bank loans [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 14.70% | 12.10%
Carrying amount | ₺ (1,620,391) | ₺ (1,819,944)
TL [member] | Debt securities in issue [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate |  | 10.70%
Carrying amount |  | ₺ (238,956)
Other [member] | Time deposits [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 12.90% | 11.10%
Carrying amount | ₺ 13,036 | ₺ 36,175
Other [member] | Restricted cash [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Carrying amount | ₺ 320 |
UAH [member] | Unsecured bank loans [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 13.90% | 15.00%
Carrying amount | ₺ (520,933) | ₺ (407,171)
New Belarusian Ruble | Secured bank loans [member] | Fixed rate instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Effective Interest Rate | 11.60% | 11.90%
Carrying amount | ₺ (4,390) | ₺ (5,634)

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