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Financial Instruments by Category - Schedule of Net Income and Expenses From Financial Instruments (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financial liabilities at amortized cost | Interest expense |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Income and expenses on financial liabilities at amortized cost | ₩ (162) | ₩ (127) | ₩ (115)
Financial liabilities at amortized cost | Differences in foreign currency |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Income and expenses on financial liabilities at amortized cost | (1,344) | (1,301) | (821)
Financial assets at amortized cost | Interest income |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Income and expenses on financial assets at amortized cost | 11,487 | 4,496 | 1,355
Financial assets at amortized cost | Differences in foreign currency |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Income and expenses on financial assets at amortized cost | (1,654) | 2,101 | 2,135
Financial assets at fair value through profit or loss | Interest income |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Income on financial assets at fair value through profit or loss | ₩ 5 | ₩ 5 | ₩ 28

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