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Finance Income (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Interest Income |  |  |
Cash and cash equivalents | ₩ 42,861 | ₩ 40,704 | ₩ 35,474
Available-for-sale financial assets | 0 | 0 | 290
Financial assets at fair value through profit or loss | 29,411 | 21,713 | 0
Financial assets at amortized cost | 539 | 89 | 0
Held-to-maturity investments | 0 | 0 | 82
Loans | 63,448 | 21,925 | 30,014
Short-term financial instrument | 49,070 | 41,025 | 29,412
Long-term financial instrument | 12,794 | 7,920 | 8,144
Other financial assets | 54 | 1 | 0
Trade and other receivables | 69,941 | 90,390 | 102,727
Total Interest Income | 268,118 | 223,767 | 206,143
Dividends income | 13,838 | 12,777 | 11,477
Gains on disposal of financial assets | 3,866 | 1,838 | 1,130
Gains on valuation of financial assets at fair value through profit or loss | 5,575 | 8,495 | 12
Gains on valuation of derivatives | 362,735 | 199,943 | 16,165
Gains on transaction of derivatives | 157,961 | 179,745 | 29,257
Gains on foreign currency translation of Finance Income | 175,839 | 143,254 | 1,115,832
Gains on foreign currency transaction | 21,774 | 27,051 | 150,602
Total Finance Income | ₩ 1,009,706 | ₩ 796,870 | ₩ 1,530,618

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