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Derivative Financial Instruments - Additional Information (Detail) ₺ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 TRY (₺) | Dec. 31, 2018 EUR (€) | Dec. 31, 2018 EUR (€) | Dec. 31, 2017 TRY (₺)
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Interest expense accrual included in current derivative financial instruments assets | ₺ 84,479 |  |  |
Derivative financial assets | 1,356,062 |  |  | ₺ 981,396
Interest expense accrual included in current derivative financial instruments liabilities | 34,168 |  |  | 92,384
Derivative financial liabilities | 165,265 |  |  | 110,108
Interest income included in current derivative financial instruments assets |  |  |  | 19,731
Maximum exposure to credit risk | ₺ 16,635,383 |  |  | ₺ 13,279,196
Change in interest rates | 1.00% |  | 1.00% |
Change in percentage foreign exchange currency rate | 10.00% | 10.00% |  |
Participating cross currency swap contracts [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Maximum exposure to credit risk | € |  |  | € 500,000 |
Participating cross currency swap contracts [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Derivative financial assets used for hedging | € |  |  | 500,000,000 |
Guarantees included in current derivative financial instruments assets used for hedging | ₺ 690,146 |  |  |
Minimum change in mark-to-market value required for transaction | € |  | € 10,000,000 |  |
Transfer amount as collateral to the company | 925,539 | 153,540,000 |  |
Threshold amount | € |  |  | € 10,000,000 |
Transfer amount as collateral to the bank | 235,393 | € 39,050,000 |  |
Collateral amount recognizes under borrowings | 690,146 |  |  |
Derivative financial instruments assets, without transaction | 2,046,208 |  |  |
Current borrowings, without transaction | ₺ 7,726,055 |  |  |
USD [member] | Currency risk [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Hedge Ratio | 1 | 1 |  |
USD [member] | Interest rate risk [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Hedge Ratio | 1 | 1 |  |
Other foreign currency (RMB) [member] | Currency risk [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Hedge Ratio | 1 | 1 |  |
Other foreign currency (RMB) [member] | Interest rate risk [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Hedge Ratio | 1 | 1 |  |

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- Definition The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 35K -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35K_a&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 36 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_36_a&doctype=Standard&book=b -URIDate 2018-03-16 + Details
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