XML 175 R160.htm IDEA: XBRL DOCUMENT v3.8.0.1

Share Capital - Summary of Share Capital (Parenthetical) (Detail) - ₩ / shares	Dec. 31, 2017	Dec. 31, 2016
Disclosure of classes of share capital [Line Items]
Treasury shares	51,787,959	51,787,959
Ordinary shares [member]
Disclosure of classes of share capital [Line Items]
Par value of shares issued	₩ 5,000	₩ 5,000

X

- 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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X

- Definition

The nominal value per share.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 79
-Subparagraph a
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_79_a_iii&doctype=Standard
-URIDate 2017-03-09

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X

- Definition

Number of treasury shares retired against retained earnings.

+ References

No definition available.

+ Details

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Namespace Prefix:	kt_
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Balance Type:	na
Period Type:	instant

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- Details

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