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Financial Income and Costs - Summary of Details of Financial Expense (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure Of Finance Income [line items] |  |  |
Interest expenses | ₩ 263,389 | ₩ 263,579 | ₩ 278,427
Loss on foreign currency transactions | 13,105 | 27,805 | 30,267
Loss on foreign currency translation | 213,689 | 26,340 | 93,977
Loss on settlement of derivatives | 6,287 | 1,406 | 20
Loss on valuation of derivatives | 15,947 | 163,763 | 15,867
Loss on valuation of financial instruments | 25,994 | 15,646 | 2,125
Others | 2,207 | 692 | 152
Total | 563,330 | 507,383 | 432,133
Loans and receivables [member] |  |  |
Disclosure Of Finance Income [line items] |  |  |
Loss on disposal of trade receivables | ₩ 22,712 | ₩ 8,152 | ₩ 11,298

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