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Financial Income and Costs - Summary of Details of Financial Income (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Profit (loss) [abstract] |  |  |
Interest income | ₩ 271,925 | ₩ 273,460 | ₩ 270,571
Gain on foreign currency transactions | 67,976 | 19,976 | 17,493
Gain on foreign currency translation | 43,092 | 32,768 | 164,351
Gain on derivative transactions | 50,668 | 2,215 | 9,397
Gain on valuation of derivatives | 182,998 | 255,149 | 172
Gain on valuation of financial instruments | 31,032 | 90,653 | 33,868
Others | 42,737 | 52,062 | 2,762
Total | ₩ 690,428 | ₩ 726,283 | ₩ 498,614

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- Definition The net gain arising from exchange differences recognised in profit or loss, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: Foreign exchange gain (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 21 -IssueDate 2022-03-24 -Paragraph 52 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2022-en-r&anchor=para_52_a&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 35 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_35&doctype=Standard -URIDate 2022-03-24 + Details
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