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Financial Assets at Fair Value through Other Comprehensive Income (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Acquisition Cost |  | ₩ 650,513 |  |
Book value |  | 399,495 |  | ₩ 0
Fair value |  | 399,495 |  |
Listed equity securities |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Acquisition Cost |  | 365,843 |  |
Book value |  | 210,056 |  | 0
Fair value |  | ₩ 210,056 |  |
Korea District Heating Corp. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 2,264,068 |  |
Ownership |  | 19.55% |  |
Acquisition Cost |  | ₩ 173,201 |  |
Book value |  | 129,051 |  |
Fair value |  | ₩ 129,051 |  |
Ssangyong Motor Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 38,568 |  |
Ownership |  | 0.03% |  |
Acquisition Cost |  | ₩ 428 |  |
Book value |  | 153 |  |
Fair value |  | ₩ 153 |  |
Korea Line Corp. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 18 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
Namkwang Engineering & Construction Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 121 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 15 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
Bumyang Construction Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 35 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 2 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
ELCOMTEC Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 32,875 |  |
Ownership |  | 0.04% |  |
Acquisition Cost |  | ₩ 217 |  |
Book value |  | 61 |  |
Fair value |  | ₩ 61 |  |
PAN ocean Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,492 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 14 |  |
Book value |  | 7 |  |
Fair value |  | ₩ 7 |  |
Dongbu Corporation |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 955 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 12 |  |
Book value |  | 7 |  |
Fair value |  | ₩ 7 |  |
KSP Co., Ltd. [Member] |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 22,539 |  |
Ownership |  | 0.08% |  |
Acquisition Cost |  | ₩ 24 |  |
Book value |  | 32 |  |
Fair value |  | ₩ 32 |  |
STX Heavy Industries Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 5,057 |  |
Ownership |  | 0.13% |  |
Acquisition Cost |  | ₩ 191 |  |
Book value |  | 29 |  |
Fair value |  | ₩ 29 |  |
Codes Combine Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 291 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
PT Adaro Energy Tbk |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 480,000,000 |  |
Ownership |  | 1.50% |  |
Acquisition Cost |  | ₩ 71,554 |  |
Book value |  | 44,790 |  |
Fair value |  | ₩ 44,790 |  |
Energy Fuels Inc. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,711,814 |  |
Ownership |  | 1.91% |  |
Acquisition Cost |  | ₩ 16,819 |  |
Book value |  | 5,435 |  |
Fair value |  | ₩ 5,435 |  |
Baralaba Coal Company Limited |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 99,763 |  |
Ownership |  | 0.07% |  |
Acquisition Cost |  | ₩ 18,445 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
Denison Mines Corp. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 58,284,000 |  |
Ownership |  | 10.42% |  |
Acquisition Cost |  | ₩ 84,134 |  |
Book value |  | 30,122 |  |
Fair value |  | ₩ 30,122 |  |
Fission 3.0 [Member] |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares | [1] | 75,000 |  |
Ownership | [1] | 0.14% |  |
Acquisition Cost | [1] | ₩ 0 |  |
Book value | [1] | 13 |  |
Fair value | [1] | ₩ 13 |  |
Fission Uranium Corp. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 800,000 |  |
Ownership |  | 0.16% |  |
Acquisition Cost |  | ₩ 785 |  |
Book value |  | 354 |  |
Fair value |  | 354 |  |
Unlisted equity securities |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Acquisition Cost | [2] | 284,670 |  |
Book value |  | 189,439 | [2] | ₩ 0
Fair value | [2] | ₩ 189,439 |  |
Intellectual Discovery, Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,000,000 |  |
Ownership |  | 8.81% |  |
Acquisition Cost |  | ₩ 5,000 |  |
Book value |  | 954 |  |
Fair value |  | ₩ 954 |  |
Hwan Young Steel Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 10,916 |  |
Ownership |  | 0.14% |  |
Acquisition Cost |  | ₩ 1,092 |  |
Book value |  | 97 |  |
Fair value |  | ₩ 97 |  |
SAMBO AUTO. Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 15,066 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 38 |  |
Book value |  | 38 |  |
Fair value |  | ₩ 38 |  |
Mobo Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 504 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 14 |  |
Book value |  | 14 |  |
Fair value |  | ₩ 14 |  |
Dae Kwang Semiconductor Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 589 |  |
Ownership |  | 0.07% |  |
Acquisition Cost |  | ₩ 6 |  |
Book value |  | 6 |  |
Fair value |  | ₩ 6 |  |
Sanbon Department Store |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 828 |  |
Ownership |  | 0.01% |  |
Acquisition Cost |  | ₩ 124 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Miju Steel Mfg. Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,097 |  |
Ownership |  | 0.23% |  |
Acquisition Cost |  | ₩ 50 |  |
Book value |  | 50 |  |
Fair value |  | ₩ 50 |  |
Sungwon Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares | [3] | 117 |  |
Ownership | [3] | 0.07% |  |
Acquisition Cost | [3] | ₩ 15 |  |
Book value | [3] | 15 |  |
Fair value | [3] | ₩ 15 |  |
Hana Civil Engineering Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 23 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
KC Development Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 839 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 6 |  |
Book value |  | 6 |  |
Fair value |  | ₩ 6 |  |
IMHWA Corp. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 329 |  |
Ownership |  | 0.11% |  |
Acquisition Cost |  | ₩ 5 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
DALIM Special Vehicle Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 58 |  |
Ownership |  | 0.08% |  |
Acquisition Cost |  | ₩ 10 |  |
Book value |  | 10 |  |
Fair value |  | ₩ 10 |  |
ASA JEONJU Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 34,846 |  |
Ownership |  | 1.34% |  |
Acquisition Cost |  | ₩ 697 |  |
Book value |  | 69 |  |
Fair value |  | ₩ 69 |  |
Moonkyung Silica Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 42 |  |
Ownership |  | 0.56% |  |
Acquisition Cost |  | ₩ 0 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
Sungkwang Timber Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 9 |  |
Ownership |  | 0.34% |  |
Acquisition Cost |  | ₩ 4 |  |
Book value |  | 4 |  |
Fair value |  | ₩ 4 |  |
Yongbo Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 61 |  |
Ownership |  | 0.20% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
HJ Steel Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 218 |  |
Ownership |  | 0.07% |  |
Acquisition Cost |  | ₩ 2 |  |
Book value |  | 2 |  |
Fair value |  | ₩ 2 |  |
KS Remicon Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 12 |  |
Ownership |  | 0.04% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Joongang Platec Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 3,591 |  |
Ownership |  | 0.75% |  |
Acquisition Cost |  | ₩ 72 |  |
Book value |  | 35 |  |
Fair value |  | ₩ 35 |  |
Pyungsan SI Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 434 |  |
Ownership |  | 0.01% |  |
Acquisition Cost |  | ₩ 9 |  |
Book value |  | 9 |  |
Fair value |  | ₩ 9 |  |
Samgong Development Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 12 |  |
Ownership |  | 0.01% |  |
Acquisition Cost |  | ₩ 7 |  |
Book value |  | 7 |  |
Fair value |  | ₩ 7 |  |
Joongang Development Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 540 |  |
Ownership |  | 0.12% |  |
Acquisition Cost |  | ₩ 8 |  |
Book value |  | 8 |  |
Fair value |  | ₩ 8 |  |
AJS Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 12,906 |  |
Ownership |  | 0.23% |  |
Acquisition Cost |  | ₩ 32 |  |
Book value |  | 32 |  |
Fair value |  | ₩ 32 |  |
SHIN-E B&P Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 119 |  |
Ownership |  | 0.13% |  |
Acquisition Cost |  | ₩ 10 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
MSE Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 429 |  |
Ownership |  | 0.13% |  |
Acquisition Cost |  | ₩ 9 |  |
Book value |  | 9 |  |
Fair value |  | ₩ 9 |  |
Ilrim Nano Tec Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,520 |  |
Ownership |  | 0.07% |  |
Acquisition Cost |  | ₩ 15 |  |
Book value |  | 15 |  |
Fair value |  | ₩ 15 |  |
Youngjin Hi-Tech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 2,512 |  |
Ownership |  | 0.25% |  |
Acquisition Cost |  | ₩ 126 |  |
Book value |  | 21 |  |
Fair value |  | ₩ 21 |  |
Buyoung Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 270 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Ilsuk Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 152 |  |
Ownership |  | 0.17% |  |
Acquisition Cost |  | ₩ 10 |  |
Book value |  | 10 |  |
Fair value |  | ₩ 10 |  |
Dongyang Telecom Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,760 |  |
Ownership |  | 0.01% |  |
Acquisition Cost |  | ₩ 11 |  |
Book value |  | 11 |  |
Fair value |  | ₩ 11 |  |
Jongwon Remicon Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 31 |  |
Ownership |  | 0.18% |  |
Acquisition Cost |  | ₩ 13 |  |
Book value |  | 13 |  |
Fair value |  | ₩ 13 |  |
Zyle Daewoo Motor Sales Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 22 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 0 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
Daewoo Development Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 8 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 0 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
Seyang Inc. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 537 |  |
Ownership |  | 0.05% |  |
Acquisition Cost |  | ₩ 27 |  |
Book value |  | 27 |  |
Fair value |  | ₩ 27 |  |
Seungri Enterprise Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 93 |  |
Ownership |  | 0.05% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Onggane Food Co., Ltd |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 5 |  |
Ownership |  | 0.07% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
Shin-E P&C Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,569 |  |
Ownership |  | 0.64% |  |
Acquisition Cost |  | ₩ 111 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Ejung Ad Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 132 |  |
Ownership |  | 0.09% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Solvus Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,056 |  |
Ownership |  | 0.04% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Myung Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 89 |  |
Ownership |  | 0.05% |  |
Acquisition Cost |  | ₩ 2 |  |
Book value |  | 2 |  |
Fair value |  | ₩ 2 |  |
Shinil Engineering Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 887 |  |
Ownership |  | 0.06% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Biwang Industry Co., Ltd |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 406 |  |
Ownership |  | 0.04% |  |
Acquisition Cost |  | ₩ 2 |  |
Book value |  | 2 |  |
Fair value |  | ₩ 2 |  |
Huimun Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 263 |  |
Ownership |  | 0.26% |  |
Acquisition Cost |  | ₩ 4 |  |
Book value |  | 4 |  |
Fair value |  | ₩ 4 |  |
Young Sung Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 89 |  |
Ownership |  | 0.40% |  |
Acquisition Cost |  | ₩ 26 |  |
Book value |  | 26 |  |
Fair value |  | ₩ 26 |  |
Yuil Industrial Electronics Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 804 |  |
Ownership |  | 0.32% |  |
Acquisition Cost |  | ₩ 15 |  |
Book value |  | 15 |  |
Fair value |  | ₩ 15 |  |
DN TEK Inc. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 12,401 |  |
Ownership |  | 0.29% |  |
Acquisition Cost |  | ₩ 61 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
Kwang Jin Structure Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 3,072 |  |
Ownership |  | 0.60% |  |
Acquisition Cost |  | ₩ 31 |  |
Book value |  | 31 |  |
Fair value |  | ₩ 31 |  |
Woojin Industry Corporation |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 3 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 16 |  |
Book value |  | 16 |  |
Fair value |  | ₩ 16 |  |
Kwang Sung Industry Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 325 |  |
Ownership |  | 0.35% |  |
Acquisition Cost |  | ₩ 7 |  |
Book value |  | 7 |  |
Fair value |  | ₩ 7 |  |
Futech Mold Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 274 |  |
Ownership |  | 0.27% |  |
Acquisition Cost |  | ₩ 14 |  |
Book value |  | 14 |  |
Fair value |  | ₩ 14 |  |
Woojoo Environment Ind. Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 101 |  |
Ownership |  | 0.11% |  |
Acquisition Cost |  | ₩ 13 |  |
Book value |  | 13 |  |
Fair value |  | ₩ 13 |  |
Hyungji Esquire Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 61 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 22 |  |
Book value |  | 22 |  |
Fair value |  | ₩ 22 |  |
Kolmar Pharma Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,426 |  |
Ownership |  | 0.01% |  |
Acquisition Cost |  | ₩ 52 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Morado Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 209 |  |
Ownership |  | 0.04% |  |
Acquisition Cost |  | ₩ 2 |  |
Book value |  | 2 |  |
Fair value |  | ₩ 2 |  |
Myung Sung Tex Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 20 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 2 |  |
Book value |  | 2 |  |
Fair value |  | ₩ 2 |  |
Kwang Sung Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 610 |  |
Ownership |  | 0.53% |  |
Acquisition Cost |  | ₩ 31 |  |
Book value |  | 31 |  |
Fair value |  | ₩ 31 |  |
Seen Business and Technology co., Ltd. (formerly, EverTechno. Co.,Ltd.) |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 29,424 |  |
Ownership |  | 0.73% |  |
Acquisition Cost |  | ₩ 148 |  |
Book value |  | 7 |  |
Fair value |  | ₩ 7 |  |
Autowel Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 260 |  |
Ownership |  | 0.38% |  |
Acquisition Cost |  | ₩ 14 |  |
Book value |  | 14 |  |
Fair value |  | ₩ 14 |  |
Woobang Construction Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 8 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 8 |  |
Book value |  | 8 |  |
Fair value |  | ₩ 8 |  |
Shin Pyung Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 6 |  |
Ownership |  | 0.03% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
JMC Heavy Industries Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 2,724 |  |
Ownership |  | 0.10% |  |
Acquisition Cost |  | ₩ 27 |  |
Book value |  | 2 |  |
Fair value |  | ₩ 2 |  |
Najin Steel Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 37 |  |
Ownership |  | 0.06% |  |
Acquisition Cost |  | ₩ 5 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
Sinkwang Industry Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,091 |  |
Ownership |  | 1.68% |  |
Acquisition Cost |  | ₩ 5 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
Crystal Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 22 |  |
Ownership |  | 0.07% |  |
Acquisition Cost |  | ₩ 2 |  |
Book value |  | 2 |  |
Fair value |  | ₩ 2 |  |
Elephant & Friends Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 563 |  |
Ownership |  | 0.61% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Mireco Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 109 |  |
Ownership |  | 0.25% |  |
Acquisition Cost |  | ₩ 11 |  |
Book value |  | 11 |  |
Fair value |  | ₩ 11 |  |
L&K Industry Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,615 |  |
Ownership |  | 0.60% |  |
Acquisition Cost |  | ₩ 24 |  |
Book value |  | 24 |  |
Fair value |  | ₩ 24 |  |
JO Tech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,263 |  |
Ownership |  | 0.62% |  |
Acquisition Cost |  | ₩ 25 |  |
Book value |  | 25 |  |
Fair value |  | ₩ 25 |  |
Kendae Printing Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 422 |  |
Ownership |  | 0.60% |  |
Acquisition Cost |  | ₩ 21 |  |
Book value |  | 21 |  |
Fair value |  | ₩ 21 |  |
Dauning Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 231 |  |
Ownership |  | 0.41% |  |
Acquisition Cost |  | ₩ 6 |  |
Book value |  | 6 |  |
Fair value |  | ₩ 6 |  |
Korea Trecision Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 22 |  |
Ownership |  | 0.45% |  |
Acquisition Cost |  | ₩ 5 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
Ace Track Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 3,130 |  |
Ownership |  | 1.08% |  |
Acquisition Cost |  | ₩ 219 |  |
Book value |  | 59 |  |
Fair value |  | ₩ 59 |  |
Yoo-A Construction Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 105 |  |
Ownership |  | 0.20% |  |
Acquisition Cost |  | ₩ 11 |  |
Book value |  | 11 |  |
Fair value |  | ₩ 11 |  |
Dung Hwan Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 531 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 5 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
Hurim Biocell Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,021 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 5 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
Smart Power Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 133,333 |  |
Ownership |  | 4.35% |  |
Acquisition Cost |  | ₩ 200 |  |
Book value |  | 200 |  |
Fair value |  | ₩ 200 |  |
Sunjin Power Tech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 4,941 |  |
Ownership |  | 0.92% |  |
Acquisition Cost |  | ₩ 247 |  |
Book value |  | 32 |  |
Fair value |  | ₩ 32 |  |
Haseung Industries Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 55 |  |
Ownership |  | 0.62% |  |
Acquisition Cost |  | ₩ 28 |  |
Book value |  | 28 |  |
Fair value |  | ₩ 28 |  |
Beer Yeast Korea Inc. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,388 |  |
Ownership |  | 0.43% |  |
Acquisition Cost |  | ₩ 7 |  |
Book value |  | 7 |  |
Fair value |  | ₩ 7 |  |
Korea Bio Red Ginseng Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 194 |  |
Ownership |  | 0.09% |  |
Acquisition Cost |  | ₩ 10 |  |
Book value |  | 10 |  |
Fair value |  | ₩ 10 |  |
B CON Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 96 |  |
Ownership |  | 1.16% |  |
Acquisition Cost |  | ₩ 6 |  |
Book value |  | 6 |  |
Fair value |  | ₩ 6 |  |
SsangMa Machine Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 4 |  |
Ownership |  | 0.05% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
Ace Integration Co., Ltd |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 105 |  |
Ownership |  | 0.09% |  |
Acquisition Cost |  | ₩ 24 |  |
Book value |  | 24 |  |
Fair value |  | ₩ 24 |  |
AceInti Agricultural Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 16 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 5 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
KyungDong Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 130 |  |
Ownership |  | 0.01% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
ChunWon Development Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 193 |  |
Ownership |  | 0.19% |  |
Acquisition Cost |  | ₩ 39 |  |
Book value |  | 39 |  |
Fair value |  | ₩ 39 |  |
WonIl Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 999 |  |
Ownership |  | 0.15% |  |
Acquisition Cost |  | ₩ 50 |  |
Book value |  | 50 |  |
Fair value |  | ₩ 50 |  |
SungLim Industrial Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 29 |  |
Ownership |  | 0.03% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
Korea Minerals Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 191 |  |
Ownership |  | 0.05% |  |
Acquisition Cost |  | ₩ 134 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
HyoDong Development Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 119 |  |
Ownership |  | 0.15% |  |
Acquisition Cost |  | ₩ 24 |  |
Book value |  | 24 |  |
Fair value |  | ₩ 24 |  |
Haspe Tech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 652 |  |
Ownership |  | 0.55% |  |
Acquisition Cost |  | ₩ 20 |  |
Book value |  | 20 |  |
Fair value |  | ₩ 20 |  |
JoHyun Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 350 |  |
Ownership |  | 1.56% |  |
Acquisition Cost |  | ₩ 18 |  |
Book value |  | 18 |  |
Fair value |  | ₩ 18 |  |
KC Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 5,107 |  |
Ownership |  | 0.17% |  |
Acquisition Cost |  | ₩ 26 |  |
Book value |  | 26 |  |
Fair value |  | ₩ 26 |  |
SeongJi Industrial Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 41 |  |
Ownership |  | 0.05% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
Dong Yang Metal Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 2,951 |  |
Ownership |  | 1.97% |  |
Acquisition Cost |  | ₩ 161 |  |
Book value |  | 147 |  |
Fair value |  | ₩ 147 |  |
Seyang Precision Ind.Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 829 |  |
Ownership |  | 0.23% |  |
Acquisition Cost |  | ₩ 41 |  |
Book value |  | 41 |  |
Fair value |  | ₩ 41 |  |
Dooriwon Food System Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 13 |  |
Ownership |  | 0.27% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
ShinShin Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 339 |  |
Ownership |  | 1.12% |  |
Acquisition Cost |  | ₩ 17 |  |
Book value |  | 17 |  |
Fair value |  | ₩ 17 |  |
Kitorang Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 165 |  |
Ownership |  | 0.24% |  |
Acquisition Cost |  | ₩ 49 |  |
Book value |  | 49 |  |
Fair value |  | ₩ 49 |  |
Sung Kwang Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 23 |  |
Ownership |  | 0.37% |  |
Acquisition Cost |  | ₩ 6 |  |
Book value |  | 6 |  |
Fair value |  | ₩ 6 |  |
Shinheung petrol. Co. Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 699 |  |
Ownership |  | 0.14% |  |
Acquisition Cost |  | ₩ 35 |  |
Book value |  | 35 |  |
Fair value |  | ₩ 35 |  |
Force TEC Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 3,501 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 18 |  |
Book value |  | 18 |  |
Fair value |  | ₩ 18 |  |
Samsung Tech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 486 |  |
Ownership |  | 1.28% |  |
Acquisition Cost |  | ₩ 97 |  |
Book value |  | 36 |  |
Fair value |  | ₩ 36 |  |
Tae Hyung Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 28 |  |
Ownership |  | 0.43% |  |
Acquisition Cost |  | ₩ 20 |  |
Book value |  | 20 |  |
Fair value |  | ₩ 20 |  |
Samyangplant Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 323 |  |
Ownership |  | 0.60% |  |
Acquisition Cost |  | ₩ 16 |  |
Book value |  | 16 |  |
Fair value |  | ₩ 16 |  |
Younil Metal Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 41 |  |
Ownership |  | 0.21% |  |
Acquisition Cost |  | ₩ 21 |  |
Book value |  | 21 |  |
Fair value |  | ₩ 21 |  |
Myungjin Tech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 20 |  |
Ownership |  | 0.54% |  |
Acquisition Cost |  | ₩ 4 |  |
Book value |  | 4 |  |
Fair value |  | ₩ 4 |  |
Hankook Precision Ind Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 110 |  |
Ownership |  | 0.06% |  |
Acquisition Cost |  | ₩ 11 |  |
Book value |  | 11 |  |
Fair value |  | ₩ 11 |  |
Borneo International Furniture Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares | [4] | 4,000 |  |
Ownership | [4] | 0.16% |  |
Acquisition Cost | [4] | ₩ 97 |  |
Book value | [4] | 13 |  |
Fair value | [4] | ₩ 13 |  |
CJ Paradise Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 24 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 12 |  |
Book value |  | 12 |  |
Fair value |  | ₩ 12 |  |
Han Young Technology Company Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 35 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 0 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
STX Offshore & Shipbuilding Co., Ltd |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 8,622 |  |
Ownership |  | 0.25% |  |
Acquisition Cost |  | ₩ 1,078 |  |
Book value |  | 1,078 |  |
Fair value |  | ₩ 1,078 |  |
Ptotronics Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 843 |  |
Ownership |  | 0.42% |  |
Acquisition Cost |  | ₩ 84 |  |
Book value |  | 6 |  |
Fair value |  | ₩ 6 |  |
NFT Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 136 |  |
Ownership |  | 0.40% |  |
Acquisition Cost |  | ₩ 8 |  |
Book value |  | 8 |  |
Fair value |  | ₩ 8 |  |
Echoroba Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 157 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Hyundaitech Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,363 |  |
Ownership |  | 0.87% |  |
Acquisition Cost |  | ₩ 27 |  |
Book value |  | 27 |  |
Fair value |  | ₩ 27 |  |
Dasan Material Co.Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 29 |  |
Ownership |  | 0.04% |  |
Acquisition Cost |  | ₩ 22 |  |
Book value |  | 22 |  |
Fair value |  | ₩ 22 |  |
Fish World Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 47 |  |
Ownership |  | 0.21% |  |
Acquisition Cost |  | ₩ 2 |  |
Book value |  | 2 |  |
Fair value |  | ₩ 2 |  |
SG Shinsung Engineering and Construction Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 10 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 6 |  |
Book value |  | 6 |  |
Fair value |  | ₩ 6 |  |
Samdo Industry Electric Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 48 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
Taejung Industries Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 9,268 |  |
Ownership |  | 0.30% |  |
Acquisition Cost |  | ₩ 5 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
Shinsei Trading Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 64 |  |
Ownership |  | 0.72% |  |
Acquisition Cost |  | ₩ 6 |  |
Book value |  | 6 |  |
Fair value |  | ₩ 6 |  |
Dynamic Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 111 |  |
Ownership |  | 0.19% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Green Alchemy Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 38,202 |  |
Ownership |  | 1.48% |  |
Acquisition Cost |  | ₩ 191 |  |
Book value |  | 17 |  |
Fair value |  | ₩ 17 |  |
Youone TBM Engineering & Construction Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 615 |  |
Ownership |  | 0.27% |  |
Acquisition Cost |  | ₩ 31 |  |
Book value |  | 31 |  |
Fair value |  | ₩ 31 |  |
KM Leatech |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,648 |  |
Ownership |  | 0.98% |  |
Acquisition Cost |  | ₩ 8 |  |
Book value |  | 8 |  |
Fair value |  | ₩ 8 |  |
Wonil T&I Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 229 |  |
Ownership |  | 0.17% |  |
Acquisition Cost |  | ₩ 23 |  |
Book value |  | 23 |  |
Fair value |  | ₩ 23 |  |
Semist Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 555 |  |
Ownership |  | 0.80% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
DS POWER Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 580,000 |  |
Ownership |  | 2.34% |  |
Acquisition Cost |  | ₩ 2,900 |  |
Book value |  | 916 |  |
Fair value |  | ₩ 916 |  |
Sewon Bus Co.,Ltd |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 12 |  |
Ownership |  | 0.00% |  |
Acquisition Cost |  | ₩ 0 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
Enertec Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 7,937 |  |
Ownership |  | 0.19% |  |
Acquisition Cost |  | ₩ 44 |  |
Book value |  | 44 |  |
Fair value |  | ₩ 44 |  |
Sangji Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 20 |  |
Ownership |  | 0.26% |  |
Acquisition Cost |  | ₩ 4 |  |
Book value |  | 4 |  |
Fair value |  | ₩ 4 |  |
Bellie Doughnuts Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 64 |  |
Ownership |  | 0.07% |  |
Acquisition Cost |  | ₩ 4 |  |
Book value |  | 4 |  |
Fair value |  | ₩ 4 |  |
Possbell Engineering Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 36 |  |
Ownership |  | 0.64% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
AIRTECH Information communication Co., Ltd |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 2,379 |  |
Ownership |  | 0.60% |  |
Acquisition Cost |  | ₩ 12 |  |
Book value |  | 12 |  |
Fair value |  | ₩ 12 |  |
CST co.,ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 4,998 |  |
Ownership |  | 0.28% |  |
Acquisition Cost |  | ₩ 100 |  |
Book value |  | 100 |  |
Fair value |  | ₩ 100 |  |
TN Inc. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,416 |  |
Ownership |  | 2.00% |  |
Acquisition Cost |  | ₩ 71 |  |
Book value |  | 71 |  |
Fair value |  | ₩ 71 |  |
Shin kwang Industrial Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 884 |  |
Ownership |  | 0.35% |  |
Acquisition Cost |  | ₩ 55 |  |
Book value |  | 55 |  |
Fair value |  | ₩ 55 |  |
Kiscom Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,493 |  |
Ownership |  | 0.04% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
Seil Electronics Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 2,285 |  |
Ownership |  | 0.41% |  |
Acquisition Cost |  | ₩ 286 |  |
Book value |  | 286 |  |
Fair value |  | ₩ 286 |  |
Wonil laser Co., Ltd |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 157 |  |
Ownership |  | 0.37% |  |
Acquisition Cost |  | ₩ 16 |  |
Book value |  | 16 |  |
Fair value |  | ₩ 16 |  |
Pyung Hwa Industrial Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 3,388 |  |
Ownership |  | 3.00% |  |
Acquisition Cost |  | ₩ 85 |  |
Book value |  | 85 |  |
Fair value |  | ₩ 85 |  |
Navanakorn Electric Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares | [5] | 4,442,800 |  |
Ownership | [5] | 26.93% |  |
Acquisition Cost | [5] | ₩ 17,216 |  |
Book value | [5] | 17,126 |  |
Fair value | [5] | ₩ 17,126 |  |
PT. Kedap Sayaaq |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 671 |  |
Ownership |  | 10.00% |  |
Acquisition Cost |  | ₩ 18,540 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
Set Holding |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares | [6] | 1,100,220 |  |
Ownership | [6] | 2.50% |  |
Acquisition Cost | [6] | ₩ 229,255 |  |
Book value | [6] | 161,983 |  |
Fair value | [6] | ₩ 161,983 |  |
PT. Cirebon Energi Prasarana |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 22,420 |  |
Ownership |  | 10.00% |  |
Acquisition Cost |  | ₩ 2,612 |  |
Book value |  | 2,507 |  |
Fair value |  | ₩ 2,507 |  |
KODE NOVUS 1 LLC |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares | [7] | 0 |  |
Ownership | [7] | 10.00% |  |
Acquisition Cost | [7] | ₩ 0 |  |
Book value | [7] | 0 |  |
Fair value | [7] | ₩ 0 |  |
Choheung packing Co.,Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 61 |  |
Ownership |  | 0.13% |  |
Acquisition Cost |  | ₩ 12 |  |
Book value |  | 12 |  |
Fair value |  | ₩ 12 |  |
Jaewoo Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 359 |  |
Ownership |  | 0.24% |  |
Acquisition Cost |  | ₩ 11 |  |
Book value |  | 11 |  |
Fair value |  | ₩ 11 |  |
Wooyang HC Co., Ltd |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares | [8] | 1,375 |  |
Ownership | [8] | 0.01% |  |
Acquisition Cost | [8] | ₩ 159 |  |
Book value | [8] | 159 |  |
Fair value | [8] | ₩ 159 |  |
Sungsan Parts Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 629 |  |
Ownership |  | 0.80% |  |
Acquisition Cost |  | ₩ 63 |  |
Book value |  | 63 |  |
Fair value |  | ₩ 63 |  |
KMT Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,411 |  |
Ownership |  | 0.93% |  |
Acquisition Cost |  | ₩ 21 |  |
Book value |  | 21 |  |
Fair value |  | ₩ 21 |  |
TheYeonriji Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 116 |  |
Ownership |  | 0.10% |  |
Acquisition Cost |  | ₩ 6 |  |
Book value |  | 6 |  |
Fair value |  | ₩ 6 |  |
Flusys Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 9 |  |
Ownership |  | 0.08% |  |
Acquisition Cost |  | ₩ 2 |  |
Book value |  | 2 |  |
Fair value |  | ₩ 2 |  |
DaeSung Frontier Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 2,203 |  |
Ownership |  | 1.11% |  |
Acquisition Cost |  | ₩ 221 |  |
Book value |  | 221 |  |
Fair value |  | ₩ 221 |  |
DongSeo Electronics Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 323 |  |
Ownership |  | 0.07% |  |
Acquisition Cost |  | ₩ 16 |  |
Book value |  | 16 |  |
Fair value |  | ₩ 16 |  |
Daewoo Display Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 177 |  |
Ownership |  | 0.03% |  |
Acquisition Cost |  | ₩ 5 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
Yeong-gwang Remicon Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 15 |  |
Ownership |  | 0.12% |  |
Acquisition Cost |  | ₩ 2 |  |
Book value |  | 2 |  |
Fair value |  | ₩ 2 |  |
NTS Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 143 |  |
Ownership |  | 0.22% |  |
Acquisition Cost |  | ₩ 36 |  |
Book value |  | 36 |  |
Fair value |  | ₩ 36 |  |
AID CO.,LTD. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,212 |  |
Ownership |  | 0.57% |  |
Acquisition Cost |  | ₩ 36 |  |
Book value |  | 36 |  |
Fair value |  | ₩ 36 |  |
Changwon Eco-friendly farming corporation |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 3 |  |
Ownership |  | 0.01% |  |
Acquisition Cost |  | ₩ 0 |  |
Book value |  | 0 |  |
Fair value |  | ₩ 0 |  |
Kumo Hitech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 6,697 |  |
Ownership |  | 0.53% |  |
Acquisition Cost |  | ₩ 100 |  |
Book value |  | 100 |  |
Fair value |  | ₩ 100 |  |
Kyung Pyo Industry Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 186 |  |
Ownership |  | 0.76% |  |
Acquisition Cost |  | ₩ 19 |  |
Book value |  | 19 |  |
Fair value |  | ₩ 19 |  |
Daedong Industry Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 617 |  |
Ownership |  | 0.55% |  |
Acquisition Cost |  | ₩ 46 |  |
Book value |  | 46 |  |
Fair value |  | ₩ 46 |  |
Doosung Heavy Industries Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 53 |  |
Ownership |  | 0.06% |  |
Acquisition Cost |  | ₩ 5 |  |
Book value |  | 5 |  |
Fair value |  | ₩ 5 |  |
Jangback Testiles Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 494 |  |
Ownership |  | 5.05% |  |
Acquisition Cost |  | ₩ 49 |  |
Book value |  | 49 |  |
Fair value |  | ₩ 49 |  |
Samjoo Hightech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 522 |  |
Ownership |  | 0.08% |  |
Acquisition Cost |  | ₩ 3 |  |
Book value |  | 3 |  |
Fair value |  | ₩ 3 |  |
Samkwang Chemical Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 204 |  |
Ownership |  | 1.27% |  |
Acquisition Cost |  | ₩ 51 |  |
Book value |  | 51 |  |
Fair value |  | ₩ 51 |  |
Taekwang Industry Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,327 |  |
Ownership |  | 0.48% |  |
Acquisition Cost |  | ₩ 93 |  |
Book value |  | 93 |  |
Fair value |  | ₩ 93 |  |
Taekwang Precision Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 54 |  |
Ownership |  | 0.47% |  |
Acquisition Cost |  | ₩ 54 |  |
Book value |  | 54 |  |
Fair value |  | ₩ 54 |  |
SG Corp. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 213 |  |
Ownership |  | 0.54% |  |
Acquisition Cost |  | ₩ 21 |  |
Book value |  | 21 |  |
Fair value |  | ₩ 21 |  |
Shinseung Chemical Industy Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 5 |  |
Ownership |  | 0.01% |  |
Acquisition Cost |  | ₩ 60 |  |
Book value |  | 60 |  |
Fair value |  | ₩ 60 |  |
KJ Alloy Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 368 |  |
Ownership |  | 0.20% |  |
Acquisition Cost |  | ₩ 7 |  |
Book value |  | 7 |  |
Fair value |  | ₩ 7 |  |
SM Hi-tech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 22 |  |
Ownership |  | 0.39% |  |
Acquisition Cost |  | ₩ 22 |  |
Book value |  | 22 |  |
Fair value |  | ₩ 22 |  |
Keum Mun Industry Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,320 |  |
Ownership |  | 0.97% |  |
Acquisition Cost |  | ₩ 330 |  |
Book value |  | 330 |  |
Fair value |  | ₩ 330 |  |
Puruen Environment Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 967 |  |
Ownership |  | 1.34% |  |
Acquisition Cost |  | ₩ 19 |  |
Book value |  | 19 |  |
Fair value |  | ₩ 19 |  |
Miretech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 9,111 |  |
Ownership |  | 0.27% |  |
Acquisition Cost |  | ₩ 18 |  |
Book value |  | 18 |  |
Fair value |  | ₩ 18 |  |
SIE Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 12 |  |
Ownership |  | 0.02% |  |
Acquisition Cost |  | ₩ 1 |  |
Book value |  | 1 |  |
Fair value |  | ₩ 1 |  |
Soongwon Ind. Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 150 |  |
Ownership |  | 0.40% |  |
Acquisition Cost |  | ₩ 53 |  |
Book value |  | 53 |  |
Fair value |  | ₩ 53 |  |
Sejin Hightech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 17,980 |  |
Ownership |  | 0.16% |  |
Acquisition Cost |  | ₩ 18 |  |
Book value |  | 18 |  |
Fair value |  | ₩ 18 |  |
Namcheong Corp. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 7,096 |  |
Ownership |  | 0.28% |  |
Acquisition Cost |  | ₩ 284 |  |
Book value |  | 284 |  |
Fair value |  | ₩ 284 |  |
Eun Sung Enterprise Co. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,131 |  |
Ownership |  | 0.72% |  |
Acquisition Cost |  | ₩ 17 |  |
Book value |  | 17 |  |
Fair value |  | ₩ 17 |  |
Dongdo Basalt Industry Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 182 |  |
Ownership |  | 1.50% |  |
Acquisition Cost |  | ₩ 73 |  |
Book value |  | 73 |  |
Fair value |  | ₩ 73 |  |
Shinyoung Textiles Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 523 |  |
Ownership |  | 1.01% |  |
Acquisition Cost |  | ₩ 52 |  |
Book value |  | 52 |  |
Fair value |  | ₩ 52 |  |
Bugook Cast Iron Co. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 135 |  |
Ownership |  | 0.71% |  |
Acquisition Cost |  | ₩ 14 |  |
Book value |  | 14 |  |
Fair value |  | ₩ 14 |  |
Ilwoo Steel Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 41 |  |
Ownership |  | 0.28% |  |
Acquisition Cost |  | ₩ 17 |  |
Book value |  | 17 |  |
Fair value |  | ₩ 17 |  |
Dong-un Tech Co., Ltd. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 1,159 |  |
Ownership |  | 6.28% |  |
Acquisition Cost |  | ₩ 81 |  |
Book value |  | 81 |  |
Fair value |  | ₩ 81 |  |
Wongwang Door Corp. |  |  |  |
Financial assets at fair value through other comprehensive income [Line Items] |  |  |  |
Shares |  | 575 |  |
Ownership |  | 1.00% |  |
Acquisition Cost |  | ₩ 29 |  |
Book value |  | 29 |  |
Fair value |  | ₩ 29 |  |
[1] | The number of shares owned has changed due to the stock merge (4:1) during the year ended December 31, 2018.
[2] | The Company used initial cost as their fair value because there was not enough information to determine fair value, and the range of the estimated fair value is wide.
[3] | The number of shares owned has changed due to the stock merge (5:1) during the year ended December 31, 2018.
[4] | The number of shares owned has changed due to capital reduction without refund (3:1), the stock merge (10,000:1) and the stock split (1:2,000) during the year ended December 31, 2018
[5] | Although the Company holds more than 20% of the equity shares of these investments, the Company cannot exercise significant influence.
[6] | The Company has estimated the fair value of Set Holding by using the discounted cash flow method and has recognized the difference between its fair value and book value as gain or loss on valuation of financial assets at FVOCI in other comprehensive income or loss during the year ended December 31, 2018.
[7] | As described in note 20, this is reclassified to financial assets at FVOCI due to loss of significant influence of the Company.
[8] | The number of shares owned has changed due to the stock merge (10:1) during the year ended December 31, 2018.

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