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Investment Properties - Summary of Investment Properties and Information About Fair Value Hierarchy (Detail) - TRY (₺) ₺ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Disclosure of fair value measurement of assets [line items] |  |
Investment properties | ₺ 15,425 | ₺ 980
Fair value [member] | Level 3 [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Investment properties | 49,785 | 109,338
Fair value [member] | Level 3 [member] | Investment properties in Izmir [member] | Replacement cost approach [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Investment properties |  | 52,110
Fair value [member] | Level 3 [member] | Investment properties in Gebze [member] | Income approach [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Investment properties | 17,960 | 16,690
Fair value [member] | Level 3 [member] | Investment properties in Ankara [member] | Market approach [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Investment properties | 15,915 | 15,160
Fair value [member] | Level 3 [member] | Investment properties in Istanbul [member] | Market approach [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Investment properties | 13,800 | 13,000
Fair value [member] | Level 3 [member] | Investment properties in adana [member] | Replacement cost approach [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Investment properties |  | 3,150
Fair value [member] | Level 3 [member] | Investment properties in Balikesir [member] | Replacement cost approach [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Investment properties |  | 3,112
Fair value [member] | Level 3 [member] | Other investment properties [member] | Replacement cost approach [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Investment properties |  | 3,970
Fair value [member] | Level 3 [member] | Other investment properties [member] | Market approach [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Investment properties |  | ₺ 2,146
Fair value [member] | Level 3 [member] | Investment properties in aydin [member] | Market approach [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Investment properties | ₺ 2,110 |

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- Definition Expiry date 2019-01-01: The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee under a finance lease) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business. Effective 2019-01-01: The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee as a right-of-use asset) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2018-01-01 -Paragraph 76 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2018-03-01&anchor=para_76&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2018-01-01 -Paragraph 79 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2018-03-01&anchor=para_79_d&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_b&doctype=Standard -URIDate 2018-03-16 + Details
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