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Details of non-controlling interest prior to intra-group eliminations (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Subsidiaries [Member] |  |  |
Disclosure - Details of non-controlling interest prior to intra-group eliminations [Line Items] |  |  |
Current assets of subsidiaries | ₩ 2,075,884 | ₩ 2,030,665 | ₩ 2,311,226
Non-current assets of subsidiaries | 4,421,596 | 4,165,052 | 3,978,658
Current liabilities of subsidiaries | (933,560) | (1,094,870) | (916,288)
Non-current liabilities of subsidiaries | (2,304,159) | (2,058,206) | (2,150,581)
Net assets of subsidiaries | 3,259,761 | 3,042,641 | 3,223,015
Book value of non-controlling interest | 1,393,331 | 1,502,377 | 1,412,707
Sales of subsidiaries | 2,643,343 | 2,739,186 | 2,550,576
Profit for the period of subsidiaries | 175,990 | 315,816 | 289,443
Profit for the period attributable to non-controlling interest of subsidiaries | 81,982 | 135,970 | 126,529
Cash flows from operating activities of subsidiaries | 512,611 | 414,012 | 375,934
Cash flows from investing activities of subsidiaries | (393,916) | (143,447) | (616,659)
Cash flows from financing activities before dividends to non-controlling interests of subsidiaries | 75,591 | (476,730) | 223,880
Dividends to non-controlling interests of subsidiaries | (99,256) | (110,331) | (86,108)
Effect of exchange rate fluctuation of subsidiaries | 4,005 | 4,051 | (33,006)
Net increase (decrease) of cash and cash equivalents of subsidiaries | ₩ 99,035 | ₩ (312,445) | ₩ (135,959)
KEPCO Ilijan Corporation |  |  |
Disclosure - Details of non-controlling interest prior to intra-group eliminations [Line Items] |  |  |
Percentage of ownership | 49.00% | 49.00% | 49.00%
Current assets of subsidiaries | ₩ 173,931 | ₩ 163,622 | ₩ 160,588
Non-current assets of subsidiaries | 197,446 | 267,822 | 314,036
Current liabilities of subsidiaries | (11,990) | (16,819) | (21,546)
Non-current liabilities of subsidiaries | (44,166) | (36,594) | (36,255)
Net assets of subsidiaries | 315,221 | 378,031 | 416,823
Book value of non-controlling interest | 154,458 | 185,235 | 204,243
Sales of subsidiaries | 95,072 | 99,844 | 109,183
Profit for the period of subsidiaries | 40,818 | 49,631 | 66,320
Profit for the period attributable to non-controlling interest of subsidiaries | 20,001 | 24,319 | 32,497
Cash flows from operating activities of subsidiaries | 101,707 | 92,822 | 123,534
Cash flows from investing activities of subsidiaries | 4,458 | (4,452) | (5,276)
Cash flows from financing activities before dividends to non-controlling interests of subsidiaries | (68,678) | (53,733) | (44,442)
Dividends to non-controlling interests of subsidiaries | (48,750) | (51,626) | (48,855)
Effect of exchange rate fluctuation of subsidiaries | 2,111 | 2,840 | (7,432)
Net increase (decrease) of cash and cash equivalents of subsidiaries | ₩ (9,152) | ₩ (14,149) | ₩ 17,529
KEPCO Plant Service & Engineering |  |  |
Disclosure - Details of non-controlling interest prior to intra-group eliminations [Line Items] |  |  |
Percentage of ownership | 49.00% | 49.00% | 49.00%
Current assets of subsidiaries | ₩ 779,764 | ₩ 628,725 | ₩ 623,934
Non-current assets of subsidiaries | 577,219 | 646,640 | 571,152
Current liabilities of subsidiaries | (247,737) | (270,097) | (278,562)
Non-current liabilities of subsidiaries | (47,020) | (26,331) | (16,127)
Net assets of subsidiaries | 1,062,226 | 978,937 | 900,397
Book value of non-controlling interest | 520,491 | 479,679 | 441,194
Sales of subsidiaries | 1,244,613 | 1,239,604 | 1,232,113
Profit for the period of subsidiaries | 157,737 | 160,791 | 135,482
Profit for the period attributable to non-controlling interest of subsidiaries | 77,291 | 78,788 | 66,386
Cash flows from operating activities of subsidiaries | 164,373 | 129,700 | 129,801
Cash flows from investing activities of subsidiaries | (89,159) | (123,593) | (193,408)
Cash flows from financing activities before dividends to non-controlling interests of subsidiaries | (44,332) | (33,737) | (15,606)
Dividends to non-controlling interests of subsidiaries | (39,466) | (32,414) | (14,994)
Effect of exchange rate fluctuation of subsidiaries | (593) | (124) | (1,267)
Net increase (decrease) of cash and cash equivalents of subsidiaries | ₩ (9,177) | ₩ (60,168) | ₩ (95,474)
KEPCO Engineering & Construction Company |  |  |
Disclosure - Details of non-controlling interest prior to intra-group eliminations [Line Items] |  |  |
Percentage of ownership | 33.92% | 33.92% | 33.92%
Current assets of subsidiaries | ₩ 257,593 | ₩ 281,390 | ₩ 257,529
Non-current assets of subsidiaries | 477,614 | 490,090 | 504,637
Current liabilities of subsidiaries | (223,522) | (248,402) | (221,860)
Non-current liabilities of subsidiaries | (19,472) | (61,698) | (83,274)
Net assets of subsidiaries | 492,213 | 461,380 | 457,032
Book value of non-controlling interest | 166,959 | 156,500 | 155,025
Sales of subsidiaries | 448,635 | 433,701 | 490,193
Profit for the period of subsidiaries | 26,398 | 12,937 | 21,222
Profit for the period attributable to non-controlling interest of subsidiaries | 8,954 | 4,388 | 7,199
Cash flows from operating activities of subsidiaries | 27,081 | 81,042 | 62,578
Cash flows from investing activities of subsidiaries | 47,219 | (50,569) | (8,622)
Cash flows from financing activities before dividends to non-controlling interests of subsidiaries | (34,632) | (14,591) | (55,504)
Dividends to non-controlling interests of subsidiaries | (1,807) | (2,839) | (1,419)
Effect of exchange rate fluctuation of subsidiaries | (14) | 31 | (101)
Net increase (decrease) of cash and cash equivalents of subsidiaries | 37,847 | 13,074 | (3,068)
Others |  |  |
Disclosure - Details of non-controlling interest prior to intra-group eliminations [Line Items] |  |  |
Current assets of subsidiaries | 864,596 | 956,928 | 1,269,175
Non-current assets of subsidiaries | 3,169,317 | 2,760,500 | 2,588,833
Current liabilities of subsidiaries | (450,311) | (559,552) | (394,320)
Non-current liabilities of subsidiaries | (2,193,501) | (1,933,583) | (2,014,925)
Net assets of subsidiaries | 1,390,101 | 1,224,293 | 1,448,763
Book value of non-controlling interest | 551,423 | 680,963 | 612,245
Sales of subsidiaries | 855,023 | 966,037 | 719,087
Profit for the period of subsidiaries | (48,963) | 92,457 | 66,419
Profit for the period attributable to non-controlling interest of subsidiaries | (24,264) | 28,475 | 20,447
Cash flows from operating activities of subsidiaries | 219,450 | 110,448 | 60,021
Cash flows from investing activities of subsidiaries | (356,434) | 35,167 | (409,353)
Cash flows from financing activities before dividends to non-controlling interests of subsidiaries | 223,233 | (374,669) | 339,432
Dividends to non-controlling interests of subsidiaries | (9,233) | (23,452) | (20,840)
Effect of exchange rate fluctuation of subsidiaries | 2,501 | 1,304 | (24,206)
Net increase (decrease) of cash and cash equivalents of subsidiaries | ₩ 79,517 | ₩ (251,202) | ₩ (54,946)

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