XML 181 R168.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Share-based Payments - Summary of Details of Share-based Payments (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
16th grant [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value per option		₩ 36,941
Total compensation costs		₩ 9,442
17th grant [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value per option	₩ 30,205
Total compensation costs	₩ 7,262

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average fair value of share options granted during the period at the measurement date. [Refer: Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2023-01-01
-Paragraph 47
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_47_a&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Total compensation costs.

+ References

No definition available.

+ Details

Name:	kt_TotalCompensationCosts
Namespace Prefix:	kt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=kt_SixteenthGrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=kt_SeventeenthGrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: