v3.25.1
Accounts and Other Receivables - Summary of ECLs and Credit Risk Exposures for Accounts and Other Receivables (Details)
₩ in Millions, $ in Millions
Dec. 31, 2024
KRW (₩)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
KRW (₩)
Dec. 31, 2022
KRW (₩)
Dec. 31, 2021
KRW (₩)
Loss allowance | Accounts receivable          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost ₩ (550)   ₩ (626) ₩ (319) ₩ (689)
Loss allowance | Accounts receivable | Not due or overdue less than 90 days          
Trade And Other Receivables [Line Items]          
Expected loss rate 0.40% 0.40% 0.60%    
Financial assets at amortised cost ₩ (351)   ₩ (438)    
Loss allowance | Accounts receivable | More than 90 days ~ Less than 180 days          
Trade And Other Receivables [Line Items]          
Expected loss rate 22.50% 22.50% 3.20%    
Financial assets at amortised cost ₩ (48)   ₩ (10)    
Loss allowance | Accounts receivable | More than 180 days ~ Less than 270 days          
Trade And Other Receivables [Line Items]          
Expected loss rate 87.00% 87.00% 57.40%    
Financial assets at amortised cost ₩ (11)   ₩ (16)    
Loss allowance | Accounts receivable | More than 270 days ~ Less than 1 year          
Trade And Other Receivables [Line Items]          
Expected loss rate 100.00% 100.00% 87.30%    
Financial assets at amortised cost ₩ (5)   ₩ (4)    
Loss allowance | Accounts receivable | More than 1 year          
Trade And Other Receivables [Line Items]          
Expected loss rate 100.00% 100.00% 100.00%    
Financial assets at amortised cost ₩ (135)   ₩ (158)    
Loss allowance | Other receivables          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost ₩ (5)   ₩ (5) ₩ (5) ₩ (5)
Loss allowance | Other receivables | Not due or overdue less than 90 days          
Trade And Other Receivables [Line Items]          
Expected loss rate 0.00% 0.00% 0.00%    
Financial assets at amortised cost ₩ 0   ₩ 0    
Loss allowance | Other receivables | More than 90 days ~ Less than 180 days          
Trade And Other Receivables [Line Items]          
Expected loss rate 0.00% 0.00% 0.00%    
Financial assets at amortised cost ₩ 0   ₩ 0    
Loss allowance | Other receivables | More than 180 days ~ Less than 270 days          
Trade And Other Receivables [Line Items]          
Expected loss rate 0.00% 0.00% 0.00%    
Financial assets at amortised cost ₩ 0   ₩ 0    
Loss allowance | Other receivables | More than 270 days ~ Less than 1 year          
Trade And Other Receivables [Line Items]          
Expected loss rate 0.00% 0.00% 0.00%    
Financial assets at amortised cost   $ 0 ₩ 0    
Loss allowance | Other receivables | More than 1 year          
Trade And Other Receivables [Line Items]          
Expected loss rate 100.00% 100.00% 100.00%    
Financial assets at amortised cost   $ (5) ₩ (5)    
Acquisition price | Accounts receivable          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost ₩ 81,702   71,839    
Acquisition price | Accounts receivable | Not due or overdue less than 90 days          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost 81,335   71,334    
Acquisition price | Accounts receivable | More than 90 days ~ Less than 180 days          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost 214   315    
Acquisition price | Accounts receivable | More than 180 days ~ Less than 270 days          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost 13   27    
Acquisition price | Accounts receivable | More than 270 days ~ Less than 1 year          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost 5   5    
Acquisition price | Accounts receivable | More than 1 year          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost 135   158    
Acquisition price | Other receivables          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost 1,577   3,642    
Acquisition price | Other receivables | Not due or overdue less than 90 days          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost 1,566   3,637    
Acquisition price | Other receivables | More than 90 days ~ Less than 180 days          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost 6   0    
Acquisition price | Other receivables | More than 180 days ~ Less than 270 days          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost 0   0    
Acquisition price | Other receivables | More than 270 days ~ Less than 1 year          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost 0   0    
Acquisition price | Other receivables | More than 1 year          
Trade And Other Receivables [Line Items]          
Financial assets at amortised cost ₩ 5   ₩ 5