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Revenue from Contracts with Customers - Additional Information (Details) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure Of Revenue From Contracts With Customers [Line Items]      
Transaction price allocated to unsatisfied performance obligations ₩ 19,875 ₩ 18,574 ₩ 13,579
2024      
Disclosure Of Revenue From Contracts With Customers [Line Items]      
Transaction price allocated to unsatisfied performance obligations, percentage 91.00%    
Transaction price allocated to unsatisfied performance obligations ₩ 18,090    
More than one year      
Disclosure Of Revenue From Contracts With Customers [Line Items]      
Transaction price allocated to unsatisfied performance obligations, percentage 9.00%    
Transaction price allocated to unsatisfied performance obligations ₩ 1,785    
Micro-transaction revenue      
Disclosure Of Revenue From Contracts With Customers [Line Items]      
Amount of revenue recognized from previous period's contract liabilities 16,788 12,622  
Royalties and license fees      
Disclosure Of Revenue From Contracts With Customers [Line Items]      
Amount of revenue recognized from previous period's contract liabilities 71 18  
Website and application development      
Disclosure Of Revenue From Contracts With Customers [Line Items]      
Amount of revenue recognized from previous period's contract liabilities ₩ 1,685 ₩ 840