XML 74 R62.htm IDEA: XBRL DOCUMENT
v3.21.1

Investments in Associates and Joint Ventures (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Text block [abstract] |
Summary of Details of Associates | Details of associates as at December 31, 2019 and 2020, are as follows:
|  | Percentage of ownership (%) |  |  | Location |  |  | Closing month |
| 2019 |  |  | 2020 |  |  |  |  |  |  |
Korea Information & Technology Fund |  |  | 33.3 | % |  |  | 33.3 | % |  |  | Korea |  |  |  | December 31, 2019, December 31, 2020 |
KT-IBKC Future Investment Fund 1 1 |  |  | 50.0 | % |  |  | 50.0 | % |  |  | Korea |  |  |  | December 31, 2019, December 31, 2020 |
KT-CKP New Media Investment Fund |  |  | 49.7 | % |  |  | — |  |  |  | Korea |  |  |  | December 31, 2019, December 31, 2020 |
K Bank Inc. |  |  | 10.0 | % |  |  | 34.0 | % |  |  | Korea |  |  |  | December 31, 2019, December 31, 2020 |
Hyundai Robotics Co., Ltd. 2 |  |  | — |  |  |  | 10.0 | % |  |  | Korea |  |  |  | December 31, 2019, December 31, 2020 |
| 1 | At the end of the reporting period, although the Group owns 50% ownership, the equity method of accounting has been applied as the Group, which is a limited partner of the investment fund, because the Group cannot participate in determining the operating and financial policies.
| 2 | At the end of the reporting period, although the Group has less than 20% ownership in ordinary share, this entity is included in investments in associates as the Group has a significant influence in determining the operating and financial policies.
Summary of Changes in Investments in Associates and Joint Ventures | Changes in investments in associates and joint ventures for the years ended December 31, 2019 and 2020, are as follows:
|  | 2019 |
(In millions of Korean won) |  | Beginning |  |  | Acquisition (Disposal) |  |  | Share of net profit from associates and joint ventures 1 |  |  | Others |  |  | Ending |
Korea Information & Technology Fund |  | ￦ | 148,255 |  |  | ￦ | — |  |  | ￦ | 17,956 |  |  | ￦ | (2,236 | ) |  | ￦ | 163,975 |
KT-SB Venture Investment Fund |  |  | 4,470 |  |  |  | (4,470 | ) |  |  | — |  |  |  | — |  |  |  | — |
KT-IBKC Future Investment Fund 1 |  |  | 9,961 |  |  |  | 3,750 |  |  |  | 389 |  |  |  | — |  |  |  | 14,100 |
KT-CKP New Media Investment Fund |  |  | 281 |  |  |  | (174 | ) |  |  | 27 |  |  |  | — |  |  |  | 134 |
K Bank Inc. |  |  | 52,655 |  |  |  | 21,782 |  |  |  | (28,865 | ) |  |  | (414 | ) |  |  | 45,158 |
Others 1 |  |  | 56,785 |  |  |  | (7,867 | ) |  |  | 7,241 |  |  |  | (11,866 | ) |  |  | 44,293 |
|  | ￦ | 272,407 |  |  | ￦ | 13,021 |  |  | ￦ | (3,252 | ) |  | ￦ | (14,516 | ) |  | ￦ | 267,660 |
|  | 2020 |
(In millions of Korean won) |  | Beginning |  |  | Acquisition (Disposal) |  |  | Share of net profit from associates and joint ventures 1 |  |  | Others |  |  | Ending |
Korea Information & Technology Fund |  | ￦ | 163,975 |  |  | ￦ | — |  |  | ￦ | 12,205 |  |  | ￦ | (6,025 | ) |  | ￦ | 170,155 |
KT-IBKC Future Investment Fund 1 |  |  | 14,100 |  |  |  | — |  |  |  | 2,090 |  |  |  | — |  |  |  | 16,190 |
KT-CKP New Media Investment Fund |  |  | 134 |  |  |  | (134 | ) |  |  | — |  |  |  | — |  |  |  | — |
K Bank Inc. |  |  | 45,158 |  |  |  | 195,011 |  |  |  | (30,209 | ) |  |  | (1,688 | ) |  |  | 208,272 |
Hyundai Robotics Co., Ltd. |  |  | — |  |  |  | 50,000 |  |  |  | (64 | ) |  |  | 1,000 |  |  |  | 50,936 |
Others 1 |  |  | 44,293 |  |  |  | 28,400 |  |  |  | 34,298 |  |  |  | 5,337 |  |  |  | 112,328 |
|  | ￦ | 267,660 |  |  | ￦ | 273,277 |  |  | ￦ | 18,320 |  |  | ￦ | (1,376 | ) |  | ￦ | 557,881 |
1 | KT investment Co., Ltd., a subsidiary of the Group, recognized its share in net profit from associates and joint ventures as operating revenue and expense. These include its share in net gain from associates and joint ventures of ￦ 279 million (2018: net loss of ￦ 445 million, 2019: net gain of ￦ 52 million) recognized as operating revenue during the period.
Summary of Financial Information of Associates and Joint Ventures | Summarized financial information of associates and joint ventures as at and for the years ended December 31, 2019 and 2020, is as follows:
(In millions of Korean won) |  | December 31, 2019 |
|  | Current assets |  |  | Non-current assets |  |  | Current liabilities |  |  | Non-current liabilities |
Korea Information & Technology Fund |  | ￦ | 113,233 |  |  | ￦ | 378,691 |  |  | ￦ | — |  |  | ￦ | — |
KT-IBKC Future Investment Fund 1 |  |  | 28,200 |  |  |  | — |  |  |  | — |  |  |  | — |
KT-CKP New Media Investment Fund |  |  | 3 |  |  |  | 267 |  |  |  | — |  |  |  | — |
K Bank Inc. |  |  | 2,480,065 |  |  |  | 78,566 |  |  |  | 2,350,375 |  |  |  | 3,784 |
(In millions of Korean won) |  | December 31, 2020 |
|  | Current assets |  |  | Non-current assets |  |  | Current liabilities |  |  | Non-current liabilities |
Korea Information & Technology Fund |  | ￦ | 107,652 |  |  | ￦ | 402,812 |  |  | ￦ | — |  |  | ￦ | — |
KT-IBKC Future Investment Fund 1 |  |  | 32,379 |  |  |  | — |  |  |  | — |  |  |  | — |
K Bank Inc. |  |  | 4,255,620 |  |  |  | 74,193 |  |  |  | 3,752,838 |  |  |  | 88,155 |
Hyundai Robotics Co., Ltd. |  |  | 315,886 |  |  |  | 125,619 |  |  |  | 80,615 |  |  |  | 59,324 |
(In millions of Korean won) |  | 2019 |
|  | Operating revenue |  |  | Profit (loss) for the year |  |  | Other comprehensive income(loss) |  |  | Total comprehensive income(loss) |  |  | Dividends received from associates |
Korea Information & Technology Fund |  | ￦ | 70,577 |  |  | ￦ | 53,867 |  |  | ￦ | 6,132 |  |  | ￦ | 59,999 |  |  | ￦ | 4,280 |
KT-IBKC Future Investment Fund 1 |  |  | 1,694 |  |  |  | 779 |  |  |  | — |  |  |  | 779 |  |  |  | — |
KT-CKP New Media Investment Fund |  |  | 56 |  |  |  | 55 |  |  |  | — |  |  |  | 55 |  |  |  | — |
K Bank Inc. |  |  | 92,720 |  |  |  | (100,773 | ) |  |  | (23 | ) |  |  | (100,796 | ) |  |  | — |
(In millions of Korean won) |  | 2020 |
|  | Operating revenue |  |  | Profit (loss) for the year |  |  | Other comprehensive income(loss) |  |  | Total comprehensive income(loss) |  |  | Dividends received from associates |
Korea Information & Technology Fund |  | ￦ | 54,473 |  |  | ￦ | 36,615 |  |  | ￦ | 9,647 |  |  | ￦ | 46,262 |  |  | ￦ | 9,241 |
KT-IBKC Future Investment Fund 1 |  |  | 6,551 |  |  |  | 4,179 |  |  |  | — |  |  |  | 4,179 |  |  |  | — |
K Bank Inc. |  |  | 80,301 |  |  |  | (105,374 | ) |  |  | (1,126 | ) |  |  | (106,500 | ) |  |  | — |
Hyundai Robotics Co., Ltd. |  |  | 195,311 |  |  |  | (642 | ) |  |  | 11,573 |  |  |  | 10,931 |  |  |  | — |
Summary of Reconciliation of Carrying Amount of Interests in the Associates and Joint Ventures | Details of a reconciliation of the summarized financial information to the carrying amount of interests in the associates and joint ventures as at and for the years end December 31, 2019 and 2020, are as follows:
(In millions of Korean won) |  | December 31, 2019 |
|  | Net assets (a) |  |  | Percentage of ownership (b) |  |  | Share in net assets (c)=(a)x(b) |  |  | Intercompany transaction and others (d) |  |  | Book amount (c)+(d) |
Korea Information & Technology Fund |  | ￦ | 491,924 |  |  |  | 33.30 | % |  | ￦ | 163,975 |  |  | ￦ | — |  |  | ￦ | 163,975 |
KT-IBKC Future Investment Fund 1 |  |  | 28,200 |  |  |  | 50.00 | % |  |  | 14,100 |  |  |  | — |  |  |  | 14,100 |
KT-CKP New Media Investment Fund |  |  | 270 |  |  |  | 49.70 | % |  |  | 134 |  |  |  | — |  |  |  | 134 |
K Bank Inc. 1 |  |  | 204,472 |  |  |  | 10.00 | % |  |  | 45,158 |  |  |  | — |  |  |  | 45,158 |
1 | 12.1% of non-voting convertible stock are excluded from percentage of ownership for K Bank Inc.
(In millions of Korean won) |  | December 31, 2020 |
|  | Net assets (a) |  |  | Percentage of ownership (b) |  |  | Share in net assets (c)=(a)x(b) |  |  | Intercompany transaction and others (d) |  |  | Book amount (c)+(d) |
Korea Information & Technology Fund |  | ￦ | 510,464 |  |  |  | 33.30 | % |  | ￦ | 170,155 |  |  | ￦ | — |  |  | ￦ | 170,155 |
KT-IBKC Future Investment Fund 1 |  |  | 32,379 |  |  |  | 50.00 | % |  |  | 16,190 |  |  |  | — |  |  |  | 16,190 |
K Bank Inc. 1 |  |  | 488,819 |  |  |  | 34.00 | % |  |  | 166,198 |  |  |  | 42,074 |  |  |  | 208,272 |
Hyundai Robotics Co., Ltd. |  |  | 301,566 |  |  |  | 10.00 | % |  |  | 30,157 |  |  |  | 20,779 |  |  |  | 50,936 |
1 | 12.1% of non-voting convertible stock are excluded from percentage of ownership for K Bank Inc.

X
- Definition The disclosure of the reconciliation between the investment derecognised and the assets and liabilities recognised on the transition from the equity method to accounting for assets and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 11 -IssueDate 2020-01-01 -Paragraph C10 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=11&code=ifrs-tx-2020-en-r&anchor=para_C10&doctype=Appendix&subtype=C -URIDate 2020-01-01 + Details
Name: | ifrs-full_DisclosureOfReconciliationBetweenInvestmentDerecognisedAndAssetsAndLiabilitiesRecognisedTransitionFromEquityMethodToAccountingForAssetsAndLiabilitiesExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of associates. [Refer: Associates [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2020-01-01 -Paragraph 17 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_17_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2020-01-01 -Paragraph 16 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_16_b&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph B4 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B4_d&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
Name: | ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of change in investments in associates and joint ventures. + References No definition available. + Details
Name: | kt_DisclosureOfChangeInInvestmentsInAssociatesAndJointVenturesExplanatory
Namespace Prefix: | kt_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of financial information about associates and joint ventures. + References No definition available. + Details
Name: | kt_DisclosureOfFinancialInformationAboutAssociatesAndJointVenturesExplanatory
Namespace Prefix: | kt_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text block [abstract] + References No definition available. + Details
Name: | kt_TextBlockAbstract
Namespace Prefix: | kt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration