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Held for sale - Additional Information (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2025	Dec. 31, 2024
Disclosure Of Non Current Assets And Liabilities Classified As Held For Sale [Line Items]
Non-current assets or disposal groups classified as held for sale	₩ 71,212	₩ 29,583
Liabilities included in disposal groups classified as held for sale	1,465	₩ 0
Amount recognised in other comprehensive income and accumulated in equity relating to non-current assets or disposal groups held for sale [member]
Disclosure Of Non Current Assets And Liabilities Classified As Held For Sale [Line Items]
Amount recognised in other comprehensive income and accumulated in equity relating to non-current assets or disposal groups held for sale	2,798
Assets and liabilities classified as held for sale [member]
Disclosure Of Non Current Assets And Liabilities Classified As Held For Sale [Line Items]
Non-current assets or disposal groups classified as held for sale	4,462
Liabilities included in disposal groups classified as held for sale	₩ 1,465

X

- Definition

The amount recognised in other comprehensive income and accumulated in equity, relating to non-current assets or disposal groups held for sale. [Refer: Non-current assets or disposal groups classified as held for sale; Other reserves; Other comprehensive income; Disposal groups classified as held for sale [member]]

+ References

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- Definition

The amount of liabilities included in disposal groups classified as held for sale. [Refer: Liabilities; Disposal groups classified as held for sale [member]]

+ References

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of non-current assets or disposal groups classified as held for sale. [Refer: Disposal groups classified as held for sale [member]]

+ References

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