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Contributed Capital - Summary of Details of Shares Issued (Parentheticals) (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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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 2021-01-01 -Paragraph 78 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_e&doctype=Standard -URIDate 2021-03-24 + Details
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