Intangible Assets and Non-current Asset Impairment - Additional Information (Detail) ₩ in Millions	12 Months Ended
Dec. 31, 2019 KRW (₩)
Display CGU [member]
Statement [line Items]
Goodwill allocated to CGU	₩ 47,419

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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