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Finance Income - Summary of Finance Income and Interest Income (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Interest Income |  |  |
Cash and cash equivalents | ₩ 12,692 | ₩ 9,419 | ₩ 42,861
Financial assets at fair value through profit or loss | 18,415 | 19,114 | 29,411
Financial assets at amortized cost | 797 | 612 | 539
Loans | 25,196 | 26,232 | 63,448
Short-term financial instruments | 7,531 | 25,540 | 49,070
Long-term financial instruments | 12,470 | 10,406 | 12,794
Other financial assets | 230 | 228 | 54
Trade and other receivables | 144,543 | 151,035 | 69,941
Total Interest Income | 221,874 | 242,586 | 268,118
Dividend income | 10,522 | 7,316 | 13,838
Gains on disposal of financial assets | 7,718 | 11,992 | 3,866
Gains on valuation of financial assets at fair value through profit or loss | 14,338 | 12,904 | 5,575
Gains on valuation of derivatives | 860,011 | 57,563 | 362,735
Gains on transaction of derivatives | 124,900 | 146,448 | 157,961
Gains on foreign currency translation | 146,349 | 1,005,961 | 175,839
Gains on foreign currency transactions | 15,618 | 24,009 | 21,774
Other financial income | 1,284 | 1,470 | 0
Total Finance Income | ₩ 1,402,614 | ₩ 1,510,249 | ₩ 1,009,706

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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 2021-01-01 -Paragraph 52 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=21&code=ifrs-tx-2021-en-r&anchor=para_52_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 35 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_35&doctype=Standard -URIDate 2021-03-24 + Details
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