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Investment properties | 12 Months Ended
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Dec. 31, 2022
Text block [abstract] |
Investment properties | 15. Investment properties ​
​ | ​ | ​ | ​ | ​
​ |  | 31 December |  | 31 December
​ | ​ | 2022 | ​ | 2021
Cost | ​ | ​ | ​ | ​
Opening balance |  | 399,412 |  | 325,682
Disposal | ​ | (226,333) | ​ | —
Transfer from property, plant and equipment |  | 515,515 |  | 73,730
Closing balance |  | 688,594 |  | 399,412
​ | ​ | ​ | ​ | ​
Accumulated depreciation |  | ​ |  |
Opening balance |  | 289,507 |  | 223,015
Transfer from property, plant and equipment |  | 443,753 |  | 60,997
Depreciation and impairment charges during the year |  | 20,894 |  | 5,495
Disposal | ​ | (174,246) | ​ | —
Closing balance |  | 579,908 |  | 289,507
​ | ​ | ​ | ​ | ​
Net book value | ​ | 108,686 |  | 109,905
​ ​ 15. Investment properties (continued) Determination of the fair values of the Group’s investment properties The Group engages qualified external experts, authorized by the Capital Markets Board of Turkiye, to perform the valuation of investment properties. Management works closely with the qualified external experts to establish the appropriate valuation techniques and inputs to the model. The fair values of these investment properties were determined using a variety of valuation methods: income capitalization approach and market approach. In estimating the fair values of the properties, the highest and best use of the property is its current use. Rent income from investment properties during the year ended 31 December 2022 is TL 14,690 (31 December 2021: TL 14,445 and 31 December 2020: TL 17,932). There is no direct operating expenses for investment properties during the year ended 31 December 2022 (31 December 2021: None and 31 December 2020: TL 706). The Group’s investment properties and their fair values at 31 December 2022 and 2021 are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
31 December 2022 |  | Level 1 |  | Level 2 |  | Level 3 |  | Valuation Method
Investment properties in Gebze free zone | ​ | — | ​ | — | ​ | 98,860 | ​ | Discounted cash flow
Investment properties in Ankara | ​ | — |  | 58,500 |  | — |  | Market approach
Investment properties in Adana | ​ | — | ​ | 13,000 | ​ | — | ​ | Market approach
Investment properties in Istanbul | ​ | — |  | 6,500 |  | — |  | Market approach
Investment properties in Aydın | ​ | — | ​ | 8,650 | ​ | — | ​ | Market approach
Total | ​ | — | ​ | 86,650 | ​ | 98,860 | ​ | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
31 December 2021 |  | Level 1 |  | Level 2 |  | Level 3 |  | Valuation Method
Investment properties in Gebze free zone | ​ | — | ​ | — | ​ | 86,611 | ​ | Discounted cash flow
Investment properties in Ankara |  | — |  | 53,084 |  | — |  | Market approach
Investment properties in Adana | ​ | — | ​ | 11,014 | ​ | — | ​ | Market approach
Investment properties in Istanbul | ​ | — | ​ | 6,185 | ​ | — | ​ | Market approach
Investment properties in Aydın | ​ | — | ​ | 5,914 | ​ | — | ​ | Market approach
Total |  | — |  | 76,197 |  | 86,611 | ​ | ​
​ Significant unobservable inputs and sensitivity of fair values of respective investment properties are as follows: In the “income capitalization” approach, a significant increase/(decrease) in rentals will cause a significant increase/(decrease) in the fair value. In addition, a slight decrease/(increase) in risk premium and discount rate which are calculated by considering current market conditions will cause a significant increase/(decrease) in the fair value. In the “market approach”, a significant increase/(decrease) in the market value of any properties which are located in similar areas with similar conditions will cause a significant increase/(decrease) in the fair value.

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- Definition The entire disclosure for investment property. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2022-03-24 -Section Disclosure -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2022-en-r&doctype=Standard&dita_xref=IAS40_g74-79__IAS40_g74-79_TI -URIDate 2022-03-24 + Details
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