XML 202 R187.htm IDEA: XBRL DOCUMENT
v3.19.1

Provisions (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | ₩ 18,180,546 |  | ₩ 18,362,212 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 18,362,212 |  | 15,427,139 |
Changes in other provisions |  |  |  |
Increase in provision | 2,783,241 |  | 5,292,348 |
Payment | (2,866,381) |  | (2,395,506) |
Reversal of unused amount | (112,453) |  | (49,115) |
Others | 13,927 |  | 87,346 |
Ending balance | 18,180,546 |  | 18,362,212 |
Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 1,594,798 |  | 2,137,498 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 2,137,498 |  | 1,999,988 |
Changes in other provisions |  |  |  |
Ending balance | 1,594,798 |  | 2,137,498 |
Noncurrent Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 16,585,748 |  | 16,224,714 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 16,224,714 |  | 13,427,151 |
Changes in other provisions |  |  |  |
Ending balance | 16,585,748 |  | 16,224,714 |
Provisions for employment benefits |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 976,347 |  | 913,787 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 913,787 |  | 810,607 |
Changes in other provisions |  |  |  |
Increase in provision | 912,440 |  | 984,896 |
Payment | (843,281) |  | (880,255) |
Reversal of unused amount | (6,599) |  | (1,461) |
Others | 0 |  | 0 |
Ending balance | 976,347 |  | 913,787 |
Provisions for employment benefits | Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 976,347 |  | 913,787 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 913,787 |  | 810,607 |
Changes in other provisions |  |  |  |
Ending balance | 976,347 |  | 913,787 |
Litigation provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 77,793 | [1] | 73,576 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 73,576 |  | 198,237 |
Changes in other provisions |  |  |  |
Increase in provision | 234,517 | [1] | 34,629 |
Payment | (216,187) | [1] | (152,461) |
Reversal of unused amount | (13,847) | [1] | (7,096) |
Others | (266) | [1] | 267 |
Ending balance | 77,793 | [1] | 73,576 |
Litigation provisions | Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 40,157 |  | 48,621 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 48,621 |  | 79,359 |
Changes in other provisions |  |  |  |
Ending balance | 40,157 |  | 48,621 |
Litigation provisions | Noncurrent Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 37,636 |  | 24,955 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 24,955 |  | 118,878 |
Changes in other provisions |  |  |  |
Ending balance | 37,636 |  | 24,955 |
Provisions For Nuclear Plants Restoration |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 13,388,134 |  | 13,007,228 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 13,007,228 |  | 10,195,928 |
Changes in other provisions |  |  |  |
Increase in provision | 411,316 |  | 2,818,033 |
Payment | (30,410) |  | (6,733) |
Reversal of unused amount | 0 |  | 0 |
Others | 0 |  | 0 |
Ending balance | 13,388,134 |  | 13,007,228 |
Provisions For Nuclear Plants Restoration | Noncurrent Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 13,388,134 |  | 13,007,228 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 13,007,228 |  | 10,195,928 |
Changes in other provisions |  |  |  |
Ending balance | 13,388,134 |  | 13,007,228 |
Spent fuel recovery provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 1,291,354 |  | 1,339,046 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 1,339,046 |  | 1,374,225 |
Changes in other provisions |  |  |  |
Increase in provision | 435,007 |  | 307,682 |
Payment | (482,699) |  | (342,861) |
Reversal of unused amount | 0 |  | 0 |
Others | 0 |  | 0 |
Ending balance | 1,291,354 |  | 1,339,046 |
Spent fuel recovery provisions | Noncurrent Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 1,291,354 |  | 1,339,046 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 1,339,046 |  | 1,374,225 |
Changes in other provisions |  |  |  |
Ending balance | 1,291,354 |  | 1,339,046 |
Waste recovery provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 1,685,008 |  | 1,638,371 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 1,638,371 |  | 1,479,502 |
Changes in other provisions |  |  |  |
Increase in provision | 112,815 |  | 222,632 |
Payment | (66,178) |  | (63,763) |
Reversal of unused amount | 0 |  | 0 |
Others | 0 |  | 0 |
Ending balance | 1,685,008 |  | 1,638,371 |
Waste recovery provisions | Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 4,310 |  | 11,494 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 11,494 |  | 2,566 |
Changes in other provisions |  |  |  |
Ending balance | 4,310 |  | 11,494 |
Waste recovery provisions | Noncurrent Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 1,680,698 |  | 1,626,877 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 1,626,877 |  | 1,476,936 |
Changes in other provisions |  |  |  |
Ending balance | 1,680,698 |  | 1,626,877 |
PCBs recovery provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 147,668 |  | 180,087 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 180,087 |  | 191,744 |
Changes in other provisions |  |  |  |
Increase in provision | 4,600 |  | 5,309 |
Payment | (13,758) |  | (14,266) |
Reversal of unused amount | (23,261) |  | (2,700) |
Others | 0 |  | 0 |
Ending balance | 147,668 |  | 180,087 |
PCBs recovery provisions | Noncurrent Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 147,668 |  | 180,087 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 180,087 |  | 191,744 |
Changes in other provisions |  |  |  |
Ending balance | 147,668 |  | 180,087 |
Other recovery provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 10,477 |  | 6,659 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 6,659 |  | 507 |
Changes in other provisions |  |  |  |
Increase in provision | 2,125 |  | 5,939 |
Payment | 0 |  | 0 |
Reversal of unused amount | 0 |  | 0 |
Others | 1,693 |  | 213 |
Ending balance | 10,477 |  | 6,659 |
Other recovery provisions | Noncurrent Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 10,477 |  | 6,659 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 6,659 |  | 507 |
Changes in other provisions |  |  |  |
Ending balance | 10,477 |  | 6,659 |
Power plant regional support program provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 137,668 |  | 153,756 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 153,756 |  | 152,851 |
Changes in other provisions |  |  |  |
Increase in provision | 46,366 |  | 94,039 |
Payment | (71,978) |  | (103,889) |
Reversal of unused amount | 0 |  | 0 |
Others | 9,524 |  | 10,755 |
Ending balance | 137,668 |  | 153,756 |
Power plant regional support program provisions | Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 137,668 |  | 153,756 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 153,756 |  | 152,851 |
Changes in other provisions |  |  |  |
Ending balance | 137,668 |  | 153,756 |
Transmission regional support program provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 151,698 |  | 243,365 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 243,365 |  | 282,608 |
Changes in other provisions |  |  |  |
Increase in provision | 141,661 |  | 143,178 |
Payment | (233,328) |  | (182,421) |
Reversal of unused amount | 0 |  | 0 |
Others | 0 |  | 0 |
Ending balance | 151,698 |  | 243,365 |
Transmission regional support program provisions | Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 151,698 |  | 243,365 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 243,365 |  | 282,608 |
Changes in other provisions |  |  |  |
Ending balance | 151,698 |  | 243,365 |
Provisions for tax |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 6,845 |  | 61 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 61 |  | 242 |
Changes in other provisions |  |  |  |
Increase in provision | 6,821 |  | 0 |
Payment | 0 |  | (25) |
Reversal of unused amount | 0 |  | (136) |
Others | (37) |  | (20) |
Ending balance | 6,845 |  | 61 |
Provisions for tax | Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 6,845 |  | 61 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 61 |  | 106 |
Changes in other provisions |  |  |  |
Ending balance | 6,845 |  | 61 |
Provisions for tax | Noncurrent Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 0 |  | 0 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 0 |  | 136 |
Changes in other provisions |  |  |  |
Ending balance | 0 |  | 0 |
Provisions for financial guarantee |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 15,586 |  | 23,475 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 23,475 |  | 29,665 |
Changes in other provisions |  |  |  |
Increase in provision | 1,179 |  | 3,760 |
Payment | (67) |  | 0 |
Reversal of unused amount | (8,432) |  | (9,945) |
Others | (569) |  | (5) |
Ending balance | 15,586 |  | 23,475 |
Provisions for financial guarantee | Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 1,320 |  | 0 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 0 |  | 29,207 |
Changes in other provisions |  |  |  |
Ending balance | 1,320 |  | 0 |
Provisions for financial guarantee | Noncurrent Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 14,266 |  | 23,475 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 23,475 |  | 458 |
Changes in other provisions |  |  |  |
Ending balance | 14,266 |  | 23,475 |
Provisions for RPS |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 93,919 |  | 271,624 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 271,624 |  | 417,404 |
Changes in other provisions |  |  |  |
Increase in provision | 297,802 |  | 242,946 |
Payment | (475,507) |  | (388,726) |
Reversal of unused amount | 0 |  | 0 |
Others | 0 |  | 0 |
Ending balance | 93,919 |  | 271,624 |
Provisions for RPS | Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 93,919 |  | 271,624 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 271,624 |  | 417,404 |
Changes in other provisions |  |  |  |
Ending balance | 93,919 |  | 271,624 |
Provisions for greenhouse gas emissions obligations |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 136,187 |  | 414,252 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 414,252 |  | 249,644 |
Changes in other provisions |  |  |  |
Increase in provision | 131,860 |  | 422,666 |
Payment | (350,356) |  | (256,758) |
Reversal of unused amount | (59,569) |  | (1,300) |
Others | 0 |  | 0 |
Ending balance | 136,187 |  | 414,252 |
Provisions for greenhouse gas emissions obligations | Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 136,187 |  | 414,252 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 414,252 |  | 249,644 |
Changes in other provisions |  |  |  |
Ending balance | 136,187 |  | 414,252 |
Others |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 61,862 |  | 96,925 | [2]
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 96,925 | [2] | 43,975 |
Changes in other provisions |  |  |  |
Increase in provision | 44,732 |  | 6,639 | [2]
Payment | (82,632) |  | (3,348) | [2]
Reversal of unused amount | (745) |  | (26,477) | [2]
Others | 3,582 |  | 76,136 | [2]
Ending balance | 61,862 |  | 96,925 | [2]
Others | Current Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 46,347 |  | 80,538 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 80,538 |  | 4,385 |
Changes in other provisions |  |  |  |
Ending balance | 46,347 |  | 80,538 |
Others | Noncurrent Provisions |  |  |  |
Disclosure of other provisions [Line Items] |  |  |  |
Net carrying value | 15,515 |  | 16,387 |
Reconciliation of changes in other provisions |  |  |  |
Beginning balance | 16,387 |  | 39,590 |
Changes in other provisions |  |  |  |
Ending balance | ₩ 15,515 |  | ₩ 16,387 |
[1] | As described in note 53.(1), the Company believes that the possibility of economic outflow is probable on the request for additional construction costs of Hyundai E&C, GS Engineering & Construction Corp. and Hansol SeenTec Co., Ltd. For this reason, the Company recognized KRW204,787 million of provision as addition to property, plant and equipment.
[2] | The Company believes that the possibility of economic outflow is probable on the cost of construction suspension of Shin-Kori unit 5 and 6 for three months. For this reason, the Company recognized KRW77,261 million of provision as addition to construction-in-progress.

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