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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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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
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2018-01-01
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-Subparagraph d
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-IssueDate 2018-01-01
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-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_b&doctype=Standard
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