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Investment Properties - Summary of Investment Properties and Changes in Investment Properties (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about investment property [line items]
Beginning balance	₩ 212,784	₩ 225,195
Depreciation	(486)	(1,386)
Others	(3,804)	(11,025)
Disposal	(208)
Endings balance	208,286	212,784
Acquisition cost
Disclosure of detailed information about investment property [line items]
Beginning balance	221,148
Endings balance	214,658	221,148
Accumulated depreciation
Disclosure of detailed information about investment property [line items]
Beginning balance	(8,334)
Endings balance	(6,351)	(8,334)
Government grants
Disclosure of detailed information about investment property [line items]
Beginning balance	(30)	(29)
Depreciation	1	1
Others	8	(2)
Disposal	0
Endings balance	(21)	(30)
Investment property - Land
Disclosure of detailed information about investment property [line items]
Beginning balance	201,605
Disposal	(208)
Endings balance	194,417	201,605
Investment property - Land | Carrying Amount Other than Government Grants
Disclosure of detailed information about investment property [line items]
Beginning balance	201,605	200,391
Depreciation	0	0
Others	(6,980)	1,214
Endings balance	194,417	201,605
Investment property - Land | Acquisition cost
Disclosure of detailed information about investment property [line items]
Beginning balance	201,605
Endings balance	194,417	201,605
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	11,179
Endings balance	13,869	11,179
Investment property - Buildings | Carrying Amount Other than Government Grants
Disclosure of detailed information about investment property [line items]
Beginning balance	11,209	24,833
Depreciation	(487)	(1,387)
Others	3,168	(12,237)
Disposal	0
Endings balance	13,890	11,209
Investment property - Buildings | Acquisition cost
Disclosure of detailed information about investment property [line items]
Beginning balance	19,543
Endings balance	20,241	19,543
Investment property - Buildings | Accumulated depreciation
Disclosure of detailed information about investment property [line items]
Beginning balance	(8,334)
Endings balance	(6,351)	(8,334)
Investment property - Buildings | Government grants
Disclosure of detailed information about investment property [line items]
Beginning balance	(30)
Endings balance	₩ (21)	₩ (30)

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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.

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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 2022-03-24
-Paragraph 76
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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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 2022-03-24
-Paragraph 79
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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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
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-IssueDate 2022-03-24
-Paragraph 76
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2022-en-r&anchor=para_76&doctype=Standard
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Depreciation investment property government grants consideration.

+ References

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