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Income Tax Expense - Additional Information (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2020	Dec. 31, 2019
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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- References

No definition available.

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- Definition

Temporary differences associated with investments in subsidiaries for which no deferred tax asset is recognised.

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No definition available.

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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]]

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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

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