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Cash Flow Information - Summary of Reconciliation of Net Cash Flow to Movement in Net Debt (Detail) - TRY (₺) ₺ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |  |
Borrowings, beginning balance | ₺ 9,781,162 |  |  |
Cash inflows | 24,312,451 |  |  |
Cash outflows | (23,273,370) |  |  |
Other non-cashmovements | 1,715,906 |  |  |
Borrowings, ending balance | 12,536,149 |  |  |
Cash and cash equivalents | 4,712,333 | ₺ 6,052,352 | ₺ 2,918,796 | ₺ 9,031,881
Net debt | (7,823,816) |  |  |
Debt securities issued [member] |  |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |  |
Borrowings, beginning balance | 1,922,656 |  |  |
Cash inflows | 209,808 |  |  |
Cash outflows | (503,391) |  |  |
Other non-cashmovements | 246,448 |  |  |
Borrowings, ending balance | 1,875,521 |  |  |
Loans Issued [member] |  |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |  |
Borrowings, beginning balance | 7,810,392 |  |  |
Cash inflows | 24,030,222 |  |  |
Cash outflows | (22,768,911) |  |  |
Other non-cashmovements | 1,466,205 |  |  |
Borrowings, ending balance | 10,537,908 |  |  |
Finance lease liabilities [member] |  |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |  |
Borrowings, beginning balance | 48,114 |  |  |
Cash inflows | 72,421 |  |  |
Cash outflows | (1,068) |  |  |
Other non-cashmovements | 3,253 |  |  |
Borrowings, ending balance | ₺ 122,720 |  |  |

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_45&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2017-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_B13_a&doctype=Appendix&seq=2 -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_i&doctype=Standard -URIDate 2017-03-09 + Details
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