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Maturity analysis for derivative financial liabilities (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | ₩ 83,336 | ₩ (376,587)
Net settlement | Not Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 0 | (774)
Gross settlement | Not Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 90,706 | (92,947)
Gross settlement | Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | (7,370) | (282,866)
Less than 1 year |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 10,888 | (69,817)
Less than 1 year | Net settlement | Not Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 0 | (774)
Less than 1 year | Gross settlement | Not Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 5,734 | (51,496)
Less than 1 year | Gross settlement | Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 5,154 | (17,547)
1~2 Years |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | (26,882) | (48,864)
1~2 Years | Gross settlement | Not Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 16,565 | (19,887)
1~2 Years | Gross settlement | Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | (43,447) | (28,977)
2~5 Years |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 100,123 | (208,802)
2~5 Years | Gross settlement | Not Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 28,283 | (16,597)
2~5 Years | Gross settlement | Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 71,840 | (192,205)
More than 5 years |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | (793) | (49,104)
More than 5 years | Gross settlement | Not Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | 40,124 | (4,967)
More than 5 years | Gross settlement | Designated as Hedging Instrument |  |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] |  |
Derivative financial liabilities, undiscounted cash flows | ₩ (40,917) | ₩ (44,137)

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- Definition The amount of contractual undiscounted cash flows in relation to derivative financial liabilities. [Refer: Derivative financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 39 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_39_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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