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Contributed Capital - Summary of Details of Shares Issued (Parentheticals) (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2022	Dec. 31, 2021
Common stock issued capital		₩ 3,209,820	₩ 3,209,820
Share Capital Owned By Government
Common stock issued capital	[1]	1,640,385	1,640,385
Korean Development Bank [Member] | Share Capital Owned By Government
Common stock issued capital		₩ 1,056,176	₩ 1,056,176
[1] Korea Development Bank’s interest of ￦1,056,176 million is included.

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- Definition

The nominal value of capital arising from issuing ordinary shares. [Refer: Issued capital]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 78
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_78_e&doctype=Standard
-URIDate 2022-03-24

+ Details

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Balance Type:	credit
Period Type:	instant

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: