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Lease - Summary of Changes in Right-of-Use Assets (Detail) - KRW (₩)
₩ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of quantitative information about right-of-use assets [line items]    
Beginning balance ₩ 5,958 ₩ 8,740
Depreciation (4,116) (3,998)
Reassessment 261 (64)
Acquisitions/Additions 4,443 1,209
Disposals 0 (45)
Translation difference 75 116
Ending balance 6,621 5,958
Offices    
Disclosure of quantitative information about right-of-use assets [line items]    
Beginning balance 5,067 6,698
Depreciation (2,794) (2,549)
Reassessment 210 1
Acquisitions/Additions 2,178 923
Disposals 0 (45)
Translation difference 59 39
Ending balance 4,720 5,067
Vehicle    
Disclosure of quantitative information about right-of-use assets [line items]    
Beginning balance 65 292
Depreciation (239) (231)
Reassessment 52 (52)
Acquisitions/Additions 490 55
Disposals 0 0
Translation difference 0 1
Ending balance 368 65
Others    
Disclosure of quantitative information about right-of-use assets [line items]    
Beginning balance 826 1,750
Depreciation (1,083) (1,218)
Reassessment (1) (13)
Acquisitions/Additions 1,775 231
Disposals 0 0
Translation difference 16 76
Ending balance ₩ 1,533 ₩ 826