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Changes in retained earnings (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of Changes in retained earnings [Abstract] |  |  |
Beginning balance | ₩ 53,370,558 | ₩ 53,173,871 |
Effect of change in accounting policy | 71,928 | 0 |
Net profit for the period attributed to owner of the Company | (1,314,567) | 1,298,720 | ₩ 7,048,581
Changes in equity method retained earnings |  |  |
Beginning balance | 5,122 | (4,943) |
Ending balance | 3,969 | 5,122 | (4,943)
Changes | (1,153) | 10,065 |
Remeasurements of defined benefit liability, net of tax | (100,495) | 158,991 |
Dividend paid | (507,152) | (1,271,089) | (1,990,089)
Ending balance | ₩ 51,519,119 | ₩ 53,370,558 | ₩ 53,173,871

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- Definition The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 81B -Subparagraph a -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_81B_a_ii&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Amount of consolidated retained earnings that represent undistributed (not yet received) earnings from 50% or less owned persons accounted for by the equity method (equity method investees). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6462270&loc=d3e57205-112772 + Details
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