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Intangible Assets - Summary of Changes In Intangible Assets (Parenthetical) (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Intangible Assets [Abstract]
Impairment loss	₩ (115)	₩ (52)	₩ (623)

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- References

No definition available.

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- Definition

The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2020-01-01
-Paragraph 118
-Subparagraph e
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_iv&doctype=Standard
-URIDate 2020-01-01

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