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Income Tax Expense - Additional Information (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Income Taxes [Abstract] |  |
Temporary difference related to investments in subsidiaries not recognized as deferred tax assets | ₩ 18,489 | ₩ 14,350
Temporary differences not recognized as deferred income tax assets | ₩ 751 | ₩ 895

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- Definition Temporary differences associated with investments in subsidiaries for which no deferred tax asset is recognised. + References No definition available. + Details
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- Definition The amount of deductible temporary differences for which no deferred tax asset is recognised in the statement of financial position. [Refer: Temporary differences [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_e&doctype=Standard -URIDate 2020-01-01 + Details
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