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Income Tax Expense - Schedule of Unused Tax Loss Carryforwards and Unused Tax Credit Carryforwards Not Recognized as Deferred Income Tax Assets (Details)
₩ in Millions
Dec. 31, 2023
KRW (₩)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]  
Unused loss carryforwards ₩ 13,834
Unused tax credit carryforwards 2,302
2024  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]  
Unused loss carryforwards 2,585
Unused tax credit carryforwards 0
2025  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]  
Unused loss carryforwards 1,421
Unused tax credit carryforwards 160
2026  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]  
Unused loss carryforwards 2,002
Unused tax credit carryforwards 175
2027  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]  
Unused loss carryforwards 353
Unused tax credit carryforwards 163
2028  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]  
Unused loss carryforwards 2,134
Unused tax credit carryforwards 520
After 2028  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]  
Unused loss carryforwards 5,339
Unused tax credit carryforwards ₩ 1,284