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Contingencies and Commitments - Summary of Credit Lines Provided By Financial Institutions (Details) - 12 months ended Dec. 31, 2024
€ in Thousands, ₩ in Thousands, ₨ in Thousands, ر.ق in Thousands, ر.ع. in Thousands, ر.س in Thousands, د.إ in Thousands, ¥ in Thousands, $ in Thousands, $ in Thousands
KRW (₩)
USD ($)
EUR (€)
JPY (¥)
INR (₨)
OMR (ر.ع.)
AED (د.إ)
SAR (ر.س)
QAR (ر.ق)
MXN ($)
Commitments on Bank-overdraft                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Nonghyup Bank and others                  
Credit limit ₩ 1,720,500,000                  
Used amount ₩ 119,643,000                  
Limit amount available for CP                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank and others                  
Credit limit ₩ 7,550,000,000                  
Used amount ₩ 7,550,000,000                  
General loan, etc.                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Kookmin Bank and others                  
Credit limit ₩ 3,930,000,000                  
Used amount ₩ 3,900,000,000                  
Limit amount available for card                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank and others                  
Credit limit ₩ 47,524,000                  
Used amount ₩ 4,006,000                  
Loan limit                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Korea Development Bank and others                  
Credit limit ₩ 3,248,025,000                  
Used amount ₩ 1,837,454,000                  
Loan limit                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions DBS Bank and others                  
Credit limit | $   $ 1,086,000                
Used amount | $   0                
Certification of payment on payables from foreign country                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Nonghyup Bank                  
Credit limit | $   8,700                
Used amount | $   4,020                
Certification of payment on L/C                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Shinhan Bank and others                  
Credit limit | $   1,235,937                
Used amount | $   183,357                
Certification of payment on L/C                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Kookmin Bank and others                  
Credit limit | €     € 32,035              
Used amount | €     13,424              
Certification of payment on L/C                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Shinhan Bank                  
Credit limit | ¥       ¥ 715,837            
Used amount | ¥       0            
Certification of performance guarantee on contracts                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank and others                  
Credit limit ₩ 160,815,000                  
Used amount ₩ 150,648,000                  
Certification of performance guarantee on contracts                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions First Abu Dhabi Bank and others                  
Credit limit | $   1,008,252                
Used amount | $   950,774                
Certification of performance guarantee on contracts                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Korea Development Bank and others                  
Credit limit | ¥       620,000            
Used amount | ¥       ¥ 620,000            
Certification of performance guarantee on contracts                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank                  
Credit limit | €     12,106              
Used amount | €     12,106              
Certification of performance guarantee on contracts                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank                  
Credit limit | ₨         ₨ 67,944          
Used amount | ₨         67,944          
Certification of performance guarantee on contracts                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank                  
Credit limit | ر.ع.           ر.ع. 6,250        
Used amount | ر.ع.           ر.ع. 6,250        
Certification of performance guarantee on contracts                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions First Abu Dhabi Bank and others                  
Credit limit | د.إ             د.إ 52,500      
Used amount | د.إ             52,500      
Certification of performance guarantee on contracts                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Saudi National Bank and others                  
Credit limit | ر.س               ر.س 124,151    
Used amount | ر.س               123,829    
Certification of bidding                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Korea Software Financial Cooperative                  
Credit limit ₩ 43,809                  
Used amount ₩ 43,809                  
Certification of bidding                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank and others                  
Credit limit | $   10,200                
Used amount | $   5,000                
Certification of bidding                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Export-Import Bank of Korea                  
Credit limit | €     10,000              
Used amount | €     10,000              
Certification of bidding                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Shinhan Bank                  
Credit limit | ر.ق                 ر.ق 155,213  
Used amount | ر.ق                 ر.ق 155,213  
Advance payment bond, Warranty bond, Retention bond and others                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Seoul Guarantee Insurance                  
Credit limit ₩ 83,161,000                  
Used amount ₩ 83,161,000                  
Advance payment bond, Warranty bond, Retention bond and others                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank and others                  
Credit limit | $   702,487                
Used amount | $   664,191                
Advance payment bond, Warranty bond, Retention bond and others                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Saudi National Bank                  
Credit limit | ر.س               32,500    
Used amount | ر.س               ر.س 32,500    
Advance payment bond, Warranty bond, Retention bond and others                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank and others                  
Credit limit | $                   $ 21,290
Used amount | $                   $ 21,290
Other commitments                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions [1] Nonghyup Bank and others                  
Credit limit [1] ₩ 314,892,000                  
Used amount [1] ₩ 56,858,000                  
Other commitments                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions [1] Nonghyup Bank and others                  
Credit limit | $ [1]   448,635                
Used amount [1]   228,813 51,784              
Other commitments                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions [1] StandardChartered                  
Credit limit | د.إ [1]             50      
Used amount | د.إ [1]             50      
Other commitments                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions [1] Kookmin Bank                  
Credit limit | € [1]     7,031              
Used amount | € [1]     € 7,031              
Secured loan of credit sales                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Nonghyup Bank and others                  
Credit limit ₩ 270,000,000                  
Used amount ₩ 0                  
Inclusive credit                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank                  
Credit limit ₩ 8,000,000                  
Used amount ₩ 3,735,000                  
Inclusive credit                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Hana Bank and others                  
Credit limit | $   35,000                
Used amount   9,362     ₨ 332,690   د.إ 319      
Equity Bridge Loan Guarantee                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions Export-Import Bank of Korea and others                  
Credit limit | $   1,764,555                
Used amount | $   1,376,262                
Trade finance                    
Commitments and Contingencies Disclosure [Line Items]                    
Financial institutions DBS Bank and others                  
Credit limit | $   850,000                
Used amount | $   $ 0                
[1] As of December 31, 2024, the Company has entered into a credit extension agreement for derivatives transactions with Nonghyup Bank, Hana Bank, and Woori Bank as ancillary to currency swap transactions.