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Investment Properties - Additional Information (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure of detailed information about investment property [abstract] |  |
Fair value of investment properties | ₩ 1,821,061 | ₩ 1,755,600
Rental income from investment properties | ₩ 207,795 | ₩ 205,993

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- Definition The amount of investment property, for which fair value was used as deemed cost in the opening IFRS statement of financial position. [Refer: Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2018-01-01 -Paragraph 30 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=1&date=2018-03-01&anchor=para_30&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of rental income arising from investment property recognised in profit or loss. [Refer: Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2018-01-01 -Paragraph 75 -Subparagraph f -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2018-03-01&anchor=para_75_f_i&doctype=Standard -URIDate 2018-03-16 + Details
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