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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, 2020 KRW (₩)
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Unused loss carryforwards	₩ 10,947
Unused tax credit carryforwards	1,759
2023
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Unused loss carryforwards	1,045
2024
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Unused loss carryforwards	2,662
2025
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Unused loss carryforwards	1,132
After 2025
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Unused loss carryforwards	6,108
Unused tax credit carryforwards	₩ 1,759

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- Definition

The amount of unused tax credits for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax credits [member]]

+ References

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-Name IAS
-Number 12
-IssueDate 2020-01-01
-Paragraph 81
-Subparagraph e
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- Definition

The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]]

+ References

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