XML 101 R88.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Material Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2023
Bottom of range [member]
Disclosure of significant accounting policies [line items]
Useful lives of investment property, excluding land depreciated cost model	5 years
Top of range [member]
Disclosure of significant accounting policies [line items]
Useful lives of investment property, excluding land depreciated cost model	40 years

X

- Definition

The useful life, measured as period of time, used for investment property. [Refer: Investment property]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2023-01-01
-Paragraph 79
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2023-en-r&anchor=para_79_b&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeInvestmentPropertyCostModel
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Disclosure of significant accounting policies [line items]

+ References

No definition available.

+ Details

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

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: