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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, 2023 | Dec. 31, 2022
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Accumulated earned revenue, expense and others |  |  |
Accumulated earned revenue |  | ₩ 22,996,785 | ₩ 22,507,004
Accumulated expense |  | 22,382,628 | 21,666,552
Accumulated profit |  | 614,157 | 840,452
Unearned advance receipts |  | 74,253 | 29,877
Construction contracts |  |  |
Construction Contract Assets and Liabilities [Abstract] |  |  |
Assets | [1] | 183,204 | 118,983
Liabilities | [2] | ₩ 270,789 | ₩ 120,952
[1] | Included in trade and other receivables, net, in the consolidated statements of financial position. The balance of trade receivables from construction contracts are ￦85,757 million and ￦101,180 million, as of December 31, 2022 and 2023, respectively.
[2] | Included in non-financial liabilities as advance received in the consolidated statements of financial position. The revenue recognized on December 31, 2023 from the amounts included in contract liabilities at the end of the prior year is ￦117,311 million.

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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 2023-01-01 -Paragraph 105 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_105&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 116 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_116_a&doctype=Standard -URIDate 2023-03-23 + Details
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