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Other Components Of Equity - Changes in the Unrealized Fair Value of Available-for-sale Investments (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Disclosure of reserves within equity [abstract] |  |
Changes in unrealized fair value of available-for-sale investments, beginning balance | ₩ 20,066 | ₩ 153,279
Changes in unrealized fair value of equity investments | 318,654 | (145,051)
Reclassification upon disposal | 2,478 | 11,838
Changes in unrealized fair value of available-for-sale investments, ending balance | ₩ 341,198 | ₩ 20,066

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- Definition Gains losses unrealized fair value of equity investments. + References No definition available. + Details
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