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Related Party Transactions - Summary of Key Management Compensation (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of transactions between related parties [abstract]      
Salaries and other short-term benefits ₩ 1,855 ₩ 2,189 ₩ 2,086
Post-employment benefits 294 412 390
Share-based compensation 976 669 625
Total ₩ 3,125 ₩ 3,270 ₩ 3,101