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Financial Assets at Amortized Cost (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Financial Assets at Amortized Cost [Line Items] |  |
Current financial assets at amortized costs | ₩ 12,302 | ₩ 11,956
Non-current financial assets at amortized costs | 1,307 | 2,086
Financial assets at amortized costs | 13,609 | 14,042
Gross carrying amount [Member] |  |
Financial Assets at Amortized Cost [Line Items] |  |
Current financial assets at amortized costs | 12,302 | 11,956
Non-current financial assets at amortized costs | 1,307 | 2,086
Financial assets at amortized costs | 13,609 | 14,042
Government grants |  |
Financial Assets at Amortized Cost [Line Items] |  |
Current financial assets at amortized costs | 0 | 0
Non-current financial assets at amortized costs | 0 | 0
Financial assets at amortized costs | 0 | 0
Allowance for doubtful accounts |  |
Financial Assets at Amortized Cost [Line Items] |  |
Current financial assets at amortized costs | 0 | 0
Non-current financial assets at amortized costs | 0 | 0
Financial assets at amortized costs | 0 | 0
Government bonds |  |
Financial Assets at Amortized Cost [Line Items] |  |
Financial assets at amortized costs | 1,609 | 3,042
Government bonds | Gross carrying amount [Member] |  |
Financial Assets at Amortized Cost [Line Items] |  |
Financial assets at amortized costs | 1,609 | 3,042
Government bonds | Government grants |  |
Financial Assets at Amortized Cost [Line Items] |  |
Financial assets at amortized costs | 0 | 0
Government bonds | Allowance for doubtful accounts |  |
Financial Assets at Amortized Cost [Line Items] |  |
Financial assets at amortized costs | 0 | 0
Others |  |
Financial Assets at Amortized Cost [Line Items] |  |
Financial assets at amortized costs | 12,000 | 11,000
Others | Gross carrying amount [Member] |  |
Financial Assets at Amortized Cost [Line Items] |  |
Financial assets at amortized costs | 12,000 | 11,000
Others | Government grants |  |
Financial Assets at Amortized Cost [Line Items] |  |
Financial assets at amortized costs | 0 | 0
Others | Allowance for doubtful accounts |  |
Financial Assets at Amortized Cost [Line Items] |  |
Financial assets at amortized costs | ₩ 0 | ₩ 0

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- Definition The amount of current financial assets measured at amortised cost. [Refer: Financial assets at amortised cost] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 8 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_8_f&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of financial assets at amortised cost. The amortised cost is the amount at which financial assets are measured at initial recognition minus principal repayments, plus or minus the cumulative amortisation using the effective interest method of any difference between that initial amount and the maturity amount, and adjusted for any impairment. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 8 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_8_f&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of non-current financial assets measured at amortised cost. [Refer: Financial assets at amortised cost] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 8 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_8_f&doctype=Standard -URIDate 2019-03-27 + Details
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