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Other Financial Assets and Liabilities - Summary of Available-For-Sale Financial Assets (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
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Disclosure of detailed information about financial instruments [Line Items] |  |  |
Financial assets available-for-sale | ₩ 380,953 | ₩ 404,774 | ₩ 360,037
Less: non-current | (379,488) | (384,798) |
Current | 1,465 | 19,976 |
Marketable equity securities [member] |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |
Financial assets available-for-sale | 6,859 | 5,387 |
Non-marketable equity securities [member] |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |
Financial assets available-for-sale | 364,195 | 372,703 |
Debt securities [member] |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |
Financial assets available-for-sale | ₩ 9,899 | ₩ 26,684 |

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- Definition The amount of current financial assets available-for-sale. [Refer: Financial assets available-for-sale; Current financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 8 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_8_d&doctype=Standard&book=B -URIDate 2017-03-09 + 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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- Definition The amount of non-derivative financial assets that are designated as available for sale or are not classified as (a) loans and receivables; (b) held-to-maturity investments; or (c) financial assets at fair value through profit or loss. [Refer: Derivative financial assets; Financial assets at fair value through profit or loss; Held-to-maturity investments] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 8 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_8_d&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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- Definition The amount of non-current financial assets available-for-sale. [Refer: Financial assets available-for-sale; Non-current financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 8 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_8_d&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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- Details
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- Details
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