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Inventories - Summary of Inventories (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2023
Dec. 31, 2022
Classes of current inventories [abstract]    
Finished goods ₩ 750,775 ₩ 822,177
Work-in-process 1,145,606 1,235,363
Raw materials 457,356 651,602
Supplies 173,991 163,776
Inventories ₩ 2,527,728 ₩ 2,872,918