Investment Properties - Summary of Investment Properties and Changes in Investment Properties (Details) - KRW (₩) ₩ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of detailed information about investment property [line items]
Beginning balance	₩ 185,527	₩ 208,286
Disposal	0	0
Depreciation	(682)	(493)	₩ (486)
Others	44,139	(22,266)
Endings balance	228,984	185,527	208,286
Acquisition cost
Disclosure of detailed information about investment property [line items]
Beginning balance	192,637
Endings balance	243,026	192,637
Accumulated depreciation
Disclosure of detailed information about investment property [line items]
Beginning balance	(7,088)
Endings balance	(14,020)	(7,088)
Government grants
Disclosure of detailed information about investment property [line items]
Beginning balance	(22)	(21)
Disposal	0	0
Depreciation	1	1
Others	(1)	(2)
Endings balance	(22)	(22)	(21)
Investment property - Land
Disclosure of detailed information about investment property [line items]
Beginning balance	172,594
Endings balance	210,509	172,594
Investment property - Land \| Carrying Amount Other than Government Grants
Disclosure of detailed information about investment property [line items]
Beginning balance	172,594	194,417
Disposal	0	0
Depreciation	0	0
Others	37,915	(21,823)
Endings balance	210,509	172,594	194,417
Investment property - Land \| Acquisition cost
Disclosure of detailed information about investment property [line items]
Beginning balance	172,594
Endings balance	210,509	172,594
Investment property - Land \| Accumulated depreciation
Disclosure of detailed information about investment property [line items]
Beginning balance	0
Endings balance	0	0
Investment property - Land \| Government grants
Disclosure of detailed information about investment property [line items]
Beginning balance	0
Endings balance	0	0
Investment property - Buildings
Disclosure of detailed information about investment property [line items]
Beginning balance	12,933
Endings balance	18,475	12,933
Investment property - Buildings \| Carrying Amount Other than Government Grants
Disclosure of detailed information about investment property [line items]
Beginning balance	12,955	13,890
Disposal	0	0
Depreciation	(683)	(494)
Others	6,225	(441)
Endings balance	18,497	12,955	₩ 13,890
Investment property - Buildings \| Acquisition cost
Disclosure of detailed information about investment property [line items]
Beginning balance	20,043
Endings balance	32,517	20,043
Investment property - Buildings \| Accumulated depreciation
Disclosure of detailed information about investment property [line items]
Beginning balance	(7,088)
Endings balance	(14,020)	(7,088)
Investment property - Buildings \| Government grants
Disclosure of detailed information about investment property [line items]
Beginning balance	(22)
Endings balance	₩ (22)	₩ (22)

The amount of depreciation recognised on investment property. [Refer: Depreciation and amortisation expense; Investment property]

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

The decrease in investment property resulting from disposals. [Refer: Investment property]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2024-01-01
-Paragraph 76
-Subparagraph c
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-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2024-01-01
-Paragraph 79
-Subparagraph d
-Clause iii
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-URIDate 2024-03-27

+ 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 2024-01-01
-Paragraph 79
-Subparagraph d
-Clause viii
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-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
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-URIDate 2024-03-27

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- Definition

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 2024-01-01
-Paragraph 76
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_76&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2024-01-01
-Paragraph 79
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_79_d&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
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-URIDate 2024-03-27

+ Details

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