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Transactions with Related Parties - Summary of Transactions with Related Parties (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of transactions between related parties [line items]
Revenue	₩ 18,417	₩ 25,741	₩ 36,647
Purchases	70	62	55
GungHo Online Entertainment, Inc.
Disclosure of transactions between related parties [line items]
Revenue	18,417	25,741	36,647
Purchases	15	20	55
GungHo Online Entertainment America
Disclosure of transactions between related parties [line items]
Revenue	0	0	0
Purchases	₩ 55	₩ 42	₩ 0

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- Definition

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

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- Definition

The amount of goods purchased by the entity in related party transactions. [Refer: Related parties [member]]

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- Definition

The amount of revenue arising from the sale of goods in related party transactions. [Refer: Revenue; Related parties [member]]

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