XML 128 R116.htm IDEA: XBRL DOCUMENT v3.19.1

Assets Held for Sale - Additional Information (Detail) ₩ in Millions	Dec. 31, 2018 KRW (₩)
Disclosure Of Assets Held For Sale [abstract]
Assets held for sale	₩ 13,035

X

- Definition

The amount of non-current assets or disposal groups classified as held for sale. [Refer: Disposal groups classified as held for sale [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 5
-IssueDate 2018-01-01
-Paragraph 38
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=5&date=2018-03-01&anchor=para_38&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Disclosure of assets held for sale.

+ References

No definition available.

+ Details

Name:	kt_DisclosureOfAssetsHeldForSaleAbstract
Namespace Prefix:	kt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration