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Leases - Additional Information (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Statements [Line Items] |  |
Expense relating to short-term leases for which recognition exemption has been used | ₩ 172,711 | ₩ 235,473
Expense relating to leases of low-value assets for which recognition exemption has been used | 4,659 | 3,147
Cash outflow related to leases | 901,041 | 1,005,014
Discounted unguaranteed residual value of assets | ₩ 25,521 | ₩ 22,910
Maximum |  |
Statements [Line Items] |  |
Implicit interest rate on finance lease | 17.03% | 17.08%
Minimum |  |
Statements [Line Items] |  |
Implicit interest rate on finance lease | 0.00% | 0.00%
Power Purchase Agreement | Maximum |  |
Statements [Line Items] |  |
Lease term of finance lease | 11 years |
Power Purchase Agreement | Minimum |  |
Statements [Line Items] |  |
Lease term of finance lease | 2 years |
Jordan Electric Power Company | Power Purchase Agreement |  |
Statements [Line Items] |  |
Lease term of finance lease | 25 years |
Fujeij Wind Power Plant | Power Purchase Agreement |  |
Statements [Line Items] |  |
Lease term of finance lease | 20 years |
Federal Electricity Commission | Power Purchase Agreement |  |
Statements [Line Items] |  |
Lease term of finance lease | 25 years |

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- Definition The cash outflow for leases. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2023-01-01 -Paragraph 53 -Subparagraph g -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_53_g&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of the discounted unguaranteed residual value of assets subject to finance leases. Unguaranteed residual value is the portion of the residual value of the underlying asset, the realisation of which by a lessor is not assured or is guaranteed solely by a party related to the lessor. Finance lease is a lease that transfers substantially all the risks and rewards incidental to ownership of an underlying asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2023-01-01 -Paragraph 94 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_94&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of the expense relating to leases of low-value assets accounted for applying paragraph 6 of IFRS 16. This expense shall not include the expense relating to short-term leases of low-value assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2023-01-01 -Paragraph 53 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_53_d&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of the expense relating to short-term leases accounted for applying paragraph 6 of IFRS 16. This expense need not include the expense relating to leases with a lease term of one month or less. Short-term lease is a lease that, at the commencement date, has a lease term of 12 months or less. A lease that contains a purchase option is not a short-term lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2023-01-01 -Paragraph 53 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_53_c&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition implicit interest rate on finance lease. + References No definition available. + Details
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- Definition Lease term of finance lease. + References No definition available. + Details
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- Definition Statements. + References No definition available. + Details
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- Details
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- Details
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- Details
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