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Construction Contracts - Summary of Gross Amount of Assets and Liabilities for Contract and Accumulated Earned Revenue, Expense and Others (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Accumulated earned revenue, expense and others |  |  |
Accumulated earned revenue |  | ₩ 24,255,432 | ₩ 22,996,785
Accumulated expense |  | 24,008,579 | 22,382,628
Accumulated profit |  | 246,853 | 614,157
Unearned advance receipts |  | 80,069 | 74,253
Construction contracts |  |  |
Construction Contract Assets and Liabilities [Abstract] |  |  |
Assets | [1] | 1,159,085 | 183,204
Liabilities | [2] | ₩ 161,778 | ₩ 270,789
[1] | Included in trade and other receivables, net, in the consolidated statements of financial position.
[2] | Included in non-financial liabilities as advance received in the consolidated statements of financial position. The revenue recognized on December 31, 2024 from the amounts included in contract liabilities at the end of the prior year is ￦247,819 million.

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- Definition The amount of an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer, when that right is conditioned on something other than the passage of time (for example, the entity’s future performance). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 105 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_105&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 116 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_116_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of an entity’s obligation to transfer goods or services to a customer for which the entity has received consideration (or the amount is due) from the customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 105 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_105&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 116 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_116_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Accumulated earned revenue, expense and others. + References No definition available. + Details
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- Details
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