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Financial Risk Management - Summary of Exposures to Risks, Effects on Profit before Income Tax and Shareholders' Equity (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
10% strengthening in foreign exchange rate [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Fluctuation of foreign exchange rate | 10.00% | 10.00% | 10.00%
Impact on profit before income tax | ₩ (6,452) | ₩ (10,313) | ₩ (5,841)
Impact on equity | ₩ (15,351) | ₩ (18,460) | ₩ (15,836)
10% weakening in foreign exchange rate [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Fluctuation of foreign exchange rate | 10.00% | 10.00% | 10.00%
Impact on profit before income tax | ₩ 6,452 | ₩ 10,313 | ₩ 5,841
Impact on equity | ₩ 15,351 | ₩ 18,460 | ₩ 15,836
10% percentage increase in market equity price [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Fluctuation of price | 10.00% | 10.00% | 10.00%
Impact on profit before income tax | ₩ 519 | ₩ 1,473 | ₩ 2,660
Impact on equity | ₩ 129,404 | ₩ 121,423 | ₩ 113,948
10% decrease in market equity price [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Fluctuation of price | 10.00% | 10.00% | 10.00%
Impact on profit before income tax | ₩ (519) | ₩ (1,473) | ₩ (2,660)
Impact on equity | ₩ (129,404) | ₩ (121,423) | ₩ (113,948)
100 basis point increase in market interest rate [Member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Fluctuation of interest rate | 1.00% | 1.00% | 1.00%
Impact on profit before income tax | ₩ (1,658) | ₩ (2,693) | ₩ 635
Impact on equity | ₩ (11,903) | ₩ (4,718) | ₩ (2,045)
100 basis point decrease in market interest rate [Member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Fluctuation of interest rate | 1.00% | 1.00% | 1.00%
Impact on profit before income tax | ₩ 1,665 | ₩ 2,696 | ₩ (669)
Impact on equity | ₩ 12,337 | ₩ 5,037 | ₩ 2,100

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- Definition The increase (decrease) in equity. [Refer: Equity] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard -URIDate 2024-03-27 + Details
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