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Other Financial Assets and Liabilities - Summary of Changes in Available-for-Sale Financial Assets (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of detailed information about financial instruments [abstract] |  |  |
Beginning | ₩ 404,774 | ₩ 360,037 |
Acquisition | 89,027 | 44,302 | ₩ 99,111
Disposal | (129,682) | (18,161) |
Valuation | 67,593 | 14,413 |
Impairment | (6,137) | (966) |
Reclassification | (44,622) | 5,149 |
Changes in scope of consolidation | 0 | 0 |
Ending | ₩ 380,953 | ₩ 404,774 | ₩ 360,037

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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 impairment loss on financial assets. [Refer: Financial assets; Impairment loss] + 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 20 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_20_e&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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- Definition The cash outflow for the purchase of available-for-sale financial assets. [Refer: Financial assets available-for-sale] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_16&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of financial assets reclassified into the available-for-sale category. [Refer: Financial assets available-for-sale] + 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 12 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_12&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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- Definition Changes in scope of consolidation of available-for-sale financial assets. + References No definition available. + Details
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- Definition Disposal of available-for-sale financial assets. + References No definition available. + Details
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