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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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 | ₩ (10,313) | ₩ (5,841) | ₩ (3,433)
Impact on equity | ₩ (18,460) | ₩ (15,836) | ₩ 8,692
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 | ₩ 10,313 | ₩ 5,841 | ₩ 3,433
Impact on equity | ₩ 18,460 | ₩ 15,836 | ₩ (8,692)
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 | ₩ 1,473 | ₩ 2,660 | ₩ 2,000
Impact on equity | ₩ 121,423 | ₩ 113,948 | ₩ 4,588
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 | ₩ (1,473) | ₩ (2,660) | ₩ (2,000)
Impact on equity | ₩ (121,423) | ₩ (113,948) | ₩ (4,588)
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 | ₩ (2,693) | ₩ 635 | ₩ 753
Impact on equity | ₩ (4,718) | ₩ (2,045) | ₩ 5,549
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 | ₩ 2,696 | ₩ (669) | ₩ (731)
Impact on equity | ₩ 5,037 | ₩ 2,100 | ₩ (5,675)

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