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Financial Instruments - Summary of 10% Strengthening/Weakening of Foreign Exchange Rate (Detail) - TRY (₺) ₺ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Profit and Loss [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | ₺ (153,171) | ₺ (64,438)
Depreciation of foreign currency | 153,171 | 64,438
USD [member] | Profit and Loss [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (106,121) | 23,400
Depreciation of foreign currency | 106,121 | (23,400)
USD [member] | Profit and Loss [member] | Net assets and liability [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (106,121) | 23,400
Depreciation of foreign currency | 106,121 | (23,400)
EUR [member] | Profit and Loss [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (37,775) | (87,838)
Depreciation of foreign currency | 37,775 | 87,838
EUR [member] | Profit and Loss [member] | Net assets and liability [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (37,775) | (87,838)
Depreciation of foreign currency | 37,775 | ₺ 87,838
Other foreign currency (RMB) [member] | Profit and Loss [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (9,275) |
Depreciation of foreign currency | 9,275 |
Other foreign currency (RMB) [member] | Profit and Loss [member] | Net assets and liability [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (9,275) |
Depreciation of foreign currency | 9,275 |
Equity investments [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (32,845) |
Depreciation of foreign currency | 32,845 |
Equity investments [member] | USD [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (9,596) |
Depreciation of foreign currency | 9,596 |
Equity investments [member] | USD [member] | Hedged portion of risk [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (9,596) |
Depreciation of foreign currency | 9,596 |
Equity investments [member] | EUR [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (23,613) |
Depreciation of foreign currency | 23,613 |
Equity investments [member] | EUR [member] | Hedged portion of risk [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | (23,613) |
Depreciation of foreign currency | 23,613 |
Equity investments [member] | Other foreign currency (RMB) [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | 364 |
Depreciation of foreign currency | (364) |
Equity investments [member] | Other foreign currency (RMB) [member] | Hedged portion of risk [member] |  |
Disclosure Of Effect Of Changes In Foreign Exchange Rates Gain Loss [line items] |  |
Appreciation of foreign currency | 364 |
Depreciation of foreign currency | ₺ (364) |

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