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Financial Risk Management - Summary of Expected Credit Losses Reflect Forward-Looking Information (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of provision matrix [line items] |  |
Financial assets | ₩ 15,315,773 | ₩ 15,486,942
Less than 6 months [member] |  |
Disclosure of provision matrix [line items] |  |
Expected credit loss rate | 6.08% | 5.43%
7-12 months [member] |  |
Disclosure of provision matrix [line items] |  |
Expected credit loss rate | 32.37% | 21.72%
More than 1 years [member] |  |
Disclosure of provision matrix [line items] |  |
Expected credit loss rate | 60.55% | 54.55%
Carrying amounts [member] |  |
Disclosure of provision matrix [line items] |  |
Financial assets | ₩ 3,430,570 | ₩ 3,770,489
Carrying amounts [member] | Less than 6 months [member] |  |
Disclosure of provision matrix [line items] |  |
Financial assets | 3,086,024 | 3,466,588
Carrying amounts [member] | 7-12 months [member] |  |
Disclosure of provision matrix [line items] |  |
Financial assets | 59,092 | 68,772
Carrying amounts [member] | More than 1 years [member] |  |
Disclosure of provision matrix [line items] |  |
Financial assets | 285,454 | 235,129
Provision for impairment [member] |  |
Disclosure of provision matrix [line items] |  |
Financial assets | (379,626) | (331,290)
Provision for impairment [member] | Less than 6 months [member] |  |
Disclosure of provision matrix [line items] |  |
Financial assets | (187,649) | (188,086)
Provision for impairment [member] | 7-12 months [member] |  |
Disclosure of provision matrix [line items] |  |
Financial assets | (19,128) | (14,940)
Provision for impairment [member] | More than 1 years [member] |  |
Disclosure of provision matrix [line items] |  |
Financial assets | ₩ (172,849) | ₩ (128,264)

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- Definition The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35N -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35N&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph IG20D -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG20D&doctype=Implementation%20Guidance -URIDate 2024-03-27 + Details
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