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Related Party Transactions - Summary of Key Management Compensation (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of transactions between related parties [abstract]      
Salaries and other short-term benefits ₩ 1,494 ₩ 1,855 ₩ 2,189
Post-employment benefits 153 294 412
Share-based compensation 569 976 669
Total ₩ 2,216 ₩ 3,125 ₩ 3,270