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Income Tax Expense - Schedule Of Components Of Income Tax Expense Benefit (Parenthetical) (Details) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Reconciliation of average effective tax rate and applicable tax rate [Line Items]      
Applicable tax rate [1] 27.32% 27.33% 27.28%
Upto Two Hundred Million Won [member]      
Reconciliation of average effective tax rate and applicable tax rate [Line Items]      
Applicable tax rate 10.00%   11.00%
Threshold Limit Of Taxable Income ₩ 200    
Greater Than Two Hundred Million To Twenty Thousand Million Won [member]      
Reconciliation of average effective tax rate and applicable tax rate [Line Items]      
Applicable tax rate 21.00%    
Greater Than Two Hundred Million To Twenty Thousand Million Won [member] | Bottom Of Range Member      
Reconciliation of average effective tax rate and applicable tax rate [Line Items]      
Threshold Limit Of Taxable Income ₩ 200    
Greater Than Two Hundred Million To Twenty Thousand Million Won [member] | Top Of Range Member      
Reconciliation of average effective tax rate and applicable tax rate [Line Items]      
Threshold Limit Of Taxable Income ₩ 20,000    
Greater Than Twenty Thousand Million To Thirty Thousand Million Won [member]      
Reconciliation of average effective tax rate and applicable tax rate [Line Items]      
Applicable tax rate 23.20%    
Greater Than Twenty Thousand Million To Thirty Thousand Million Won [member] | Bottom Of Range Member      
Reconciliation of average effective tax rate and applicable tax rate [Line Items]      
Threshold Limit Of Taxable Income ₩ 20,000    
Greater Than Twenty Thousand Million To Thirty Thousand Million Won [member] | Top Of Range Member      
Reconciliation of average effective tax rate and applicable tax rate [Line Items]      
Threshold Limit Of Taxable Income ₩ 300,000    
Greater Than Thirty Thousand Million Won [Member]      
Reconciliation of average effective tax rate and applicable tax rate [Line Items]      
Applicable tax rate 26.50%    
Threshold Limit Of Taxable Income ₩ 300,000    
[1] Applicable income tax rate for ₩ 200 million and below is 11%, for over ₩ 200 million to ₩ 20 billion is 22%, for over ₩ 20 billion to ₩ 300 billion is 24.2% and for over ₩ 300 billion is 27.5% for the years ended December 31, 2020, 2021 and 2022.