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Financial Instruments - Summary of Analysis of Group's Financial Liabilities into Relevant Maturity Groupings Based on Contractual Maturities (Detail) - Liquidity risk [member] - TRY (₺) ₺ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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6 months or less [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | ₺ (5,868,078) | ₺ (4,911,002)
6 months or less [member] | Non-derivative financial liabilities [member] | Secured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities |  | (1,123)
6 months or less [member] | Non-derivative financial liabilities [member] | Unsecured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (3,275,230) | (1,332,478)
6 months or less [member] | Non-derivative financial liabilities [member] | Finance lease liabilities [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (18) | (70)
6 months or less [member] | Non-derivative financial liabilities [member] | Debt securities issued [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (54,221) | (298,767)
6 months or less [member] | Non-derivative financial liabilities [member] | Trade and other payables [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (2,548,365) | (3,266,123)
6 months or less [member] | Non-derivative financial liabilities [member] | Due to related parties [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (6,980) | (11,201)
6 months or less [member] | Participating cross currency swap and FX swap contracts [member] | Currency and interest swap contracts [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 18,982 | 46
6 months or less [member] | Derivative financial liabilities [member] | Currency and interest swap contracts buy option [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 1,471,106 | 28,059
6 months or less [member] | Derivative financial liabilities [member] | Currency and interest swap contracts sell option [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (1,452,124) | (28,013)
6 months or less [member] | Derivative financial liabilities [member] | Currency forward contracts [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (2,246) | (1,286)
6 months or less [member] | Derivative financial liabilities [member] | Currency forward contracts buy option [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 190,185 | 105,826
6 months or less [member] | Derivative financial liabilities [member] | Currency forward contracts sell option [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (192,431) | (107,112)
6-12 months [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (1,028,404) | (1,388,003)
6-12 months [member] | Non-derivative financial liabilities [member] | Secured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (1,117) | (1,077)
6-12 months [member] | Non-derivative financial liabilities [member] | Unsecured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (955,637) | (1,330,322)
6-12 months [member] | Non-derivative financial liabilities [member] | Finance lease liabilities [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (17,429) | (7,837)
6-12 months [member] | Non-derivative financial liabilities [member] | Debt securities issued [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (54,221) | (48,767)
1-2 years [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (2,698,637) | (1,539,988)
1-2 years [member] | Non-derivative financial liabilities [member] | Secured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (2,045) | (2,015)
1-2 years [member] | Non-derivative financial liabilities [member] | Unsecured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (2,575,807) | (1,433,790)
1-2 years [member] | Non-derivative financial liabilities [member] | Finance lease liabilities [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (16,789) | (6,648)
1-2 years [member] | Non-derivative financial liabilities [member] | Debt securities issued [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (108,442) | (97,535)
1-2 years [member] | Participating cross currency swap and FX swap contracts [member] | Currency and interest swap contracts [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 4,446 |
1-2 years [member] | Derivative financial liabilities [member] | Currency and interest swap contracts buy option [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 367,448 |
1-2 years [member] | Derivative financial liabilities [member] | Currency and interest swap contracts sell option [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (363,002) |
2-5 years [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (3,779,212) | (3,855,546)
2-5 years [member] | Non-derivative financial liabilities [member] | Secured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (1,849) | (3,476)
2-5 years [member] | Non-derivative financial liabilities [member] | Unsecured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (3,035,914) | (3,187,687)
2-5 years [member] | Non-derivative financial liabilities [member] | Finance lease liabilities [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (38,933) | (19,859)
2-5 years [member] | Non-derivative financial liabilities [member] | Debt securities issued [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (325,326) | (292,604)
2-5 years [member] | Non-derivative financial liabilities [member] | Consideration payable in relation to acquisition of Belarusian telecom [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (377,190) | (351,920)
More than 5 years [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (3,523,786) | (3,280,876)
More than 5 years [member] | Non-derivative financial liabilities [member] | Unsecured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (1,252,109) | (1,174,624)
More than 5 years [member] | Non-derivative financial liabilities [member] | Finance lease liabilities [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (60,401) | (19,859)
More than 5 years [member] | Non-derivative financial liabilities [member] | Debt securities issued [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (2,211,276) | (2,086,393)
Cost [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 15,504,080 | 13,370,554
Cost [member] | Non-derivative financial liabilities [member] | Secured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 4,390 | 5,634
Cost [member] | Non-derivative financial liabilities [member] | Unsecured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 10,533,518 | 7,804,758
Cost [member] | Non-derivative financial liabilities [member] | Finance lease liabilities [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 122,720 | 48,114
Cost [member] | Non-derivative financial liabilities [member] | Debt securities issued [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 1,875,521 | 1,922,656
Cost [member] | Non-derivative financial liabilities [member] | Trade and other payables [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 2,527,152 | 3,241,403
Cost [member] | Non-derivative financial liabilities [member] | Due to related parties [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 6,980 | 11,201
Cost [member] | Non-derivative financial liabilities [member] | Consideration payable in relation to acquisition of Belarusian telecom [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 323,691 | 295,062
Cost [member] | Participating cross currency swap and FX swap contracts [member] | Currency and interest swap contracts [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 107,862 | 40,440
Cost [member] | Derivative financial liabilities [member] | Currency forward contracts [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 2,246 | 1,286
Contractual cash flows [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (16,898,117) | (14,975,415)
Contractual cash flows [member] | Non-derivative financial liabilities [member] | Secured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (5,011) | (7,691)
Contractual cash flows [member] | Non-derivative financial liabilities [member] | Unsecured bank loans [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (11,094,697) | (8,458,901)
Contractual cash flows [member] | Non-derivative financial liabilities [member] | Finance lease liabilities [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (133,570) | (54,273)
Contractual cash flows [member] | Non-derivative financial liabilities [member] | Debt securities issued [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (2,753,486) | (2,824,066)
Contractual cash flows [member] | Non-derivative financial liabilities [member] | Trade and other payables [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (2,548,365) | (3,266,123)
Contractual cash flows [member] | Non-derivative financial liabilities [member] | Due to related parties [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (6,980) | (11,201)
Contractual cash flows [member] | Non-derivative financial liabilities [member] | Consideration payable in relation to acquisition of Belarusian telecom [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (377,190) | (351,920)
Contractual cash flows [member] | Participating cross currency swap and FX swap contracts [member] | Currency and interest swap contracts [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 23,428 | 46
Contractual cash flows [member] | Derivative financial liabilities [member] | Currency and interest swap contracts buy option [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 1,838,554 | 28,059
Contractual cash flows [member] | Derivative financial liabilities [member] | Currency and interest swap contracts sell option [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (1,815,126) | (28,013)
Contractual cash flows [member] | Derivative financial liabilities [member] | Currency forward contracts [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | (2,246) | (1,286)
Contractual cash flows [member] | Derivative financial liabilities [member] | Currency forward contracts buy option [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | 190,185 | 105,826
Contractual cash flows [member] | Derivative financial liabilities [member] | Currency forward contracts sell option [member] |  |
Disclosure of Risks [Line Items] |  |
Financial liabilities | ₺ (192,431) | ₺ (107,112)

X
- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_25&doctype=Standard -URIDate 2017-03-09 + Details
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