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Other Liabilities - Summary of Other Liabilities (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Current |  |  |
Due to customers for contract work |  | ₩ 727,902 | ₩ 452,839
Advances received |  | 500,831 | 253,171
Unearned revenue |  | 102,275 | 87,969
Withholdings |  | 209,450 | 307,753
Firm commitment liability |  | 2,910 | 10,384
Others | [1] | 30,827 | 22,723
Other current liabilities |  | 1,574,195 | 1,134,843
Non-current |  |  |
Advances received |  | 145,815 | 90,084
Unearned revenue |  | 3,704 | 4,317
Others | [1] | 98,294 | 90,651
Other non-current liabilities |  | ₩ 247,813 | ₩ 185,052
[1] | As of December 31, 2024 and 2025, the Company recognized the assumed liability amounting to ￦41,770 million and ￦43,850 million, respectively, related to unfavorable terms of a customer contract relative to market-terms upon the acquisition of Senex Energy Limited by Senex Holdings PTY LTD, a subsidiary.

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