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Investment properties, net (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | ₩ 158,580 | ₩ 159,559
Depreciation | (1,453) | (5,069)
Others | 68,068 | 4,090
Endings balance | 225,195 | 158,580
Carrying Amount Other than Government Grants |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | 158,593 | 159,609
Depreciation | (1,454) | (5,070)
Others | 68,085 | 4,054
Endings balance | 225,224 | 158,593
Acquisition cost |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | 194,487 | 174,741
Endings balance | 259,738 | 194,487
Accumulated depreciation |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | (35,894) | (15,132)
Endings balance | (34,514) | (35,894)
Government grants |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | (13) | (50)
Depreciation | 1 | 1
Others | (17) | 36
Endings balance | (29) | (13)
Investment property - Land |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | 129,897 | 139,940
Others | 70,494 | (10,043)
Endings balance | 200,391 | 129,897
Investment property - Land | Carrying Amount Other than Government Grants |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | 129,897 | 139,940
Others | 70,494 | (10,043)
Endings balance | 200,391 | 129,897
Investment property - Land | Acquisition cost |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | 129,897 | 139,940
Endings balance | 200,391 | 129,897
Investment property - Buildings |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | 28,683 | 19,619
Depreciation | (1,453) | (5,069)
Others | (2,426) | 14,133
Endings balance | 24,804 | 28,683
Investment property - Buildings | Carrying Amount Other than Government Grants |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | 28,696 | 19,669
Depreciation | (1,454) | (5,070)
Others | (2,409) | 14,097
Endings balance | 24,833 | 28,696
Investment property - Buildings | Acquisition cost |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | 64,590 | 34,801
Endings balance | 59,347 | 64,590
Investment property - Buildings | Accumulated depreciation |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | (35,894) | (15,132)
Endings balance | (34,514) | (35,894)
Investment property - Buildings | Government grants |  |
Disclosure of detailed information about investment property [Line Items] |  |
Beginning balance | (13) | (50)
Depreciation | 1 | 1
Others | (17) | 36
Endings balance | ₩ (29) | ₩ (13)

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The increase (decrease) in investment property resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2020-01-01 -Paragraph 79 -Subparagraph d -Clause viii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=40&code=ifrs-tx-2020-en-r&anchor=para_79_d_viii&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2020-01-01 -Paragraph 76 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=40&code=ifrs-tx-2020-en-r&anchor=para_76_g&doctype=Standard -URIDate 2020-01-01 + Details
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