XML 154 R142.htm IDEA: XBRL DOCUMENT v3.23.1

Borrowings - Summary of Short-term Borrowing (Parenthetical) (Detail)	Dec. 31, 2022
Woori Bank [Member]
Disclosure of detailed information about borrowings [line items]
LIBOR rate	4.04%
NongHyup Bank [Member]
Disclosure of detailed information about borrowings [line items]
LIBOR rate	4.34%
Hana Bank [Member]
Disclosure of detailed information about borrowings [line items]
LIBOR rate	3.98%

X

- Definition

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_7&doctype=Standard
-URIDate 2022-03-24

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

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

X

- Details

Name:	ifrs-full_CounterpartiesAxis=kt_WooriBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=kt_NonghyupBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=kt_HanaBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: