Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS (Details 1)

v3.23.3
INVESTMENTS (Details 1) - Valuation Technique Binomial Monte-Carlo Cliquet Option Pricing Model [Member]
₩ / shares in Units, ₩ in Billions
 9 Months Ended 12 Months Ended
Sep. 30, 2023
KRW (₩)
₩ / shares
Dec. 31, 2022
KRW (₩)
₩ / shares
Sep. 30, 2023
$ / shares
Dec. 31, 2022
$ / shares
Schedule Of Investments [Line Items]        
Principal outstanding (South Korean won) | ₩ ₩ 23.6 ₩ 26.5    
Stock price | ₩ / shares ₩ 790 ₩ 1,015    
Expected Life (in years) [Member]        
Schedule Of Investments [Line Items]        
Expected life (in years) 7 years 14 days 7 years 9 months 14 days    
Selected Yield [Member]        
Schedule Of Investments [Line Items]        
Investment in convertible bonds, measurement input 13.25 13.50    
Expected Volatility (Telcon common stock) [Member]        
Schedule Of Investments [Line Items]        
Investment in convertible bonds, measurement input 75.50 78.50    
Risk-free Interest Rate [Member]        
Schedule Of Investments [Line Items]        
Investment in convertible bonds, measurement input 3.96 3.74    
Conversion Price [Member]        
Schedule Of Investments [Line Items]        
Conversion price | (per share) ₩ 818 ₩ 1,068 $ 0.6 $ 0.85