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Investments in Associates and Joint Ventures - Details of Investments in Associates (Parenthetical) (Detail) - KRW (₩) ₩ in Millions	Dec. 31, 2025	Dec. 31, 2024
Disclosure of associates [line items]
Investment in associates provided as collateral for borrowings	₩ 486,995	₩ 452,614

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

Investments in associates provided as collateral for borrowings.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant