XML 94 R82.htm IDEA: XBRL DOCUMENT v3.19.1

Financial Risk Management (Tables)

12 Months Ended

Dec. 31, 2018

Statement [LineItems]

Summary of Maximum Exposure to Credit Risk

As at December 31, 2017 and 2018, maximum exposure to credit risk is as follows.

(In millions of Korean won)		December 31, 2017				December 31, 2018
Cash and cash equivalents (except for cash on hand)		￦	1,926,620			￦	2,284,885
Trade and other receivables
Financial assets at amortized costs			6,793,397				5,425,996
Financial assets at fair value through other comprehensive income			—				1,097,348
Contract assets			—				398,797
Other financial assets
Derivatives financial assets for hedging			7,389				29,843
Financial assets at fair value through profit or loss			5,813				714,653
Financial assets at fair value through other comprehensive income			—				6,909
Financial assets at amortized costs			—				484,271
Available-for-sale financial assets			9,899				—
Held-to-maturity financial assets			151				—
Financial instruments and others			1,333,317				—
Financial guarantee contracts1			143,969				65,760
Total		￦	10,220,555			￦	10,508,462

1 It is total amount guaranteed by the Group according to the guarantee contracts.

Summary of Contractual Undiscounted Cash Flows

The table below analyzes the Group’s liabilities (including interest expenses) into relevant maturity groups based on the remaining period at the date of the end of each reporting period to the contractual maturity date. These amounts are contractual undiscounted cash flows and can differ from the amount in the financial statements.

		December 31, 2017
(In millions of Korean won)		Less than 1 year				1-5 years				More than 5 years				Total
Trade and other payables		￦	7,882,861			￦	1,219,835			￦	161,497			￦	9,264,193
Borrowings(including debentures)			1,623,996				3,666,726				2,317,209				7,607,931
Other non-derivative financial liabilities			4,117				31,290				142,706				178,113
Financial guarantee contracts1			26,738				—				—				26,738
Total		￦	9,537,712			￦	4,917,851			￦	2,621,412			￦	17,076,975

		December 31, 2018
(In millions of Korean won)		Less than 1 year				1-5 years				More than 5 years				Total
Trade and other payables		￦	7,287,436			￦	1,173,579			￦	492,429			￦	8,953,444
Borrowings(including debentures)			1,507,232				3,669,060				2,378,272				7,554,564
Other non-derivative financial liabilities			6,123				37,358				132,152				175,633
Financial guarantee contracts1			52,734				13,026				—				65,760
Total		￦	8,853,525			￦	4,893,023			￦	3,002,853			￦	16,749,401

1 It is total amount guaranteed by the Group according to guarantee contracts. Cash flow from financial guarantee contracts is classified as the maturity group in the earliest period when the financial guarantee contracts can be executed.

Summary of Cash Outflow and Inflow of Derivatives Settled Gross or Net are Undiscounted Contractual Cash Flow

		December 31, 2016
(In millions of Korean won)		Less than 1 year				1-5 years				More than 5 years				Total
Outflow		￦	1,174,147			￦	1,176,715			￦	536,005			￦	2,886,867
Inflow			1,302,112				1,306,199				588,559				3,196,870

		December 31, 2017
(In millions of Korean won)		Less than 1 year				1-5 years				More than 5 years				Total
Outflow		￦	638,171			￦	546,791			￦	526,633			￦	1,711,595
Inflow			608,270				568,976				509,558				1,686,804

		December 31, 2018
(In millions of Korean won)		Less than 1 year				1-5 years				More than 5 years				Total
Outflow		￦	455,343			￦	1,466,915			￦	517,301			￦	2,439,559
Inflow			484,505				1,492,718				519,133				2,496,356

Summary of Debt-to-equity Ratios

The debt-to-equity ratios as at December 31, 2017 and 2018, are as follows:

(In millions of Korean won)		December 31, 2017				December 31, 2018
Total liabilities		￦	16,712,367			￦	17,815,630
Total equity			13,183,354				14,658,490
Debt-to-equity ratio			127	%			122	%

Summary of Gearing Ratios

The gearing ratios as at December 31, 2017 and 2018, are as follows:

(In millions of Korean won, %)		December 31, 2017				December 31, 2018
Total borrowings		￦	6,860,539			￦	6,648,293
Less: cash and cash equivalents			(1,928,182	)			(2,703,422	)
Net debt			4,932,357				3,944,871
Total equity			13,183,354				14,658,490
Total capital			18,115,711				18,603,361
Gearing ratio			27	%			21	%

Summary of Group's Recognized Financial Assets Subject to Enforceable Master Netting Arrangements or Similar Agreements

Details of the Group’s recognized financial assets subject to enforceable master netting arrangements or similar agreements are as follows:

(In millions of Korean won)		December 31, 2017
		Gross assets				Gross liabilities offset				Net amounts presented in the statement of financial position				Amounts not offset								Net amount
														Financial instruments				Cash collateral
Derivative used for hedge1		￦	3,284			￦	—			￦	3,284			￦	(3,284	)		￦	—			￦	—
Trade receivables2			85,755				(5,010	)			80,745				(73,109	)			—				7,636
Other financial assets			8,680				(436	)			8,244				(5,307	)			—				2,937
		￦	97,719			￦	(5,446	)		￦	92,273			￦	(81,700	)		￦	—			￦	10,573

(In millions of Korean won)		December 31, 2018
		Gross assets				Gross liabilities offset				Net amounts presented in the statement of financial position				Amounts not offset								Net amount
														Financial instruments				Cash collateral
Trade receivables2		￦	78,833			￦	(1	)		￦	78,832			￦	(76,414	)		￦	—			￦	2,418
Other financial assets			19,825				—				19,825				(19,825	)			—				—
		￦	98,658			￦	(1	)		￦	98,657			￦	(96,239	)		￦	—			￦	2,418

1 It is the amount applied with master netting arrangements under the standard contract of International Swap and Derivatives Association (ISDA).

2 It is the amount for the Controlling Company and KT Powertel Co., Ltd, a subsidiary of the Group, applied with netting arrangements under the reference offer of the telecommunication facility interconnection and sharing data among telecommunications companies

Summary of Group's Recognized Financial Liabilities Subject to Enforceable Master Netting Arrangements or Similar Agreements

The Group’s recognized financial liabilities subject to enforceable master netting arrangements or similar agreements are as follows:

(In millions of Korean won)		December 31, 2017
		Gross liabilities				Gross assets offset				Net amounts presented in the statement of financial position				Amounts not offset								Net amount
														Financial instruments				Cash collateral
Derivative used for hedging1		￦	26,135			￦	—			￦	26,135			￦	(3,284	)		￦	—			￦	22,851
Trade payables2			80,829				(5,217	)			75,612				(73,109	)			—				2,503
Other financial liabilities			5,549				(229	)			5,320				(5,307	)			—				13
		￦	112,513			￦	(5,446	)		￦	107,067			￦	(81,700	)		￦	—			￦	25,367

(In millions of Korean won)		December 31, 2018
		Gross liabilities				Gross assets offset				Net amounts presented in the statement of financial position				Amounts not offset								Net amount
														Financial instruments				Cash collateral
Trade payables2		￦	78,317			￦	—			￦	78,317			￦	(76,413	)		￦	—			￦	1,904
Other financial liabilities			19,827				(1	)			19,826				(19,825	)			—				1
		￦	98,144			￦	(1	)		￦	98,143			￦	(96,238	)		￦	—			￦	1,905

1 It is the amount applied with master netting arrangements under the standard contract of International Swap and Derivatives Association (ISDA).

2 It is the amount for the Controlling Company and KT Powertel Co., Ltd, a subsidiary of the Group, applied with netting arrangements under the reference offer of the telecommunication facility interconnection and sharing data among telecommunications companies.

Currency risk [Member]

Statement [LineItems]

Summary of Exposures to Risks, Effects on Profit before Income Tax and Shareholders' Equity

As at December 31, 2016, 2017 and 2018, if the foreign exchange rate had strengthened/weakened by 10% with all other variables held constant, the effects on profit before income tax and shareholders’ equity would have been as follows:

(In millions of Korean won)		Fluctuation of foreign exchange rate				Income before tax1				Shareholders’ equity
2016.12.31			10	%			(28,134	)			(23,817	)
			-10	%			28,134				23,817
2017.12.31			10	%			(10,132	)			(7,273	)
			-10	%			10,132				7,273
2018.12.31			10	%			(2,350	)			633
			-10	%			(2,851	)			(62	)

1 Computed with considering derivatives hedging effect applied by the Group to hedge foreign exchange risk of liabilities in foreign currencies

Summary of Details of Financial Assets and Liabilities in Foreign Currencies

Details of financial assets and liabilities in foreign currencies as at December 31, 2016, 2017 and 2018, are as follows:

(In thousands of foreign currencies)		2016								2017								2018
		Financial assets				Financial liabilities				Financial assets				Financial liabilities				Financial assets				Financial liabilities
USD			210,474				2,536,090				236,476				1,908,831				279,327				1,893,782
SDR1			311				737				306				738				267				730
JPY			80,555				21,802,051				28,267				21,801,443				66,078				50,000,000
GBP			1				151				—				74				—				256
EUR			40				2,571				186				3,625				2				6
DZD2			471				—				47				—				618				—
CNY			15,262				381				46,555				10				16,315				271
UZS3			39,531				—				136,787				—				121,053				—
RWF4			1,203				—				3,346				—				857				—
THB5			—				—				—				—				1,685				1,685
IDR6			15,646,011				53,142,167				14,886,393				710,162				64,240,286				41,510,330
MMK7			2,750				—				84				—				84				—
TZS8			29,987				—				317,348				—				—				2,876
BWP9			15				—				42				—				897				—
HKD			254				—				—				—				—				—
BDT10			69,473				—				38,074				—				39,494				—
PLN11			106,025				—				338				—				26				—
VND12			515,412				—				311,649				—				467,272				—
XAF13			—				—				—				—				666				—
CHF14			—				—				—				12				—				—

1 Special Drawing Rights.

2 Algeria Dinar.

3 Uzbekistan Sum.

4 Rwanda Franc.

5 Thailand Bhat.

6 Indonesia Rupiah.

7 Myanmar Kyat.

8 Tanzanian Shilling.

9 Botswana Pula.

10 Bangladesh Taka.

11 Polish Zloty.

12 Vietnam Dong.

13 Central African Franc.

14 Confoederatio Helvetia Franc.

Equity price risk [Member]

Statement [LineItems]

Summary of Exposures to Risks, Effects on Profit before Income Tax and Shareholders' Equity

As at December 31, 2016, 2017 and 2018, the Group is exposed to equity securities price risk because the securities held by the Group are traded in active markets. If the market prices had increased/decreased by 10% with all other variables held constant, the effects on profit before income tax and shareholders’ equity would have been as follows:

(In millions of Korean won)		Fluctuation of price		Income before tax				Equity
2016.12.31		10%		￦	—			￦	539
		-10%			—				(539	)
2017.12.31		10%		￦	—			￦	686
		-10%			—				(686	)
2018.12.31		10%		￦	12			￦	898
		-10%			(12	)			(898	)

Interest rate risk [Member]

Statement [LineItems]

Summary of Exposures to Risks, Effects on Profit before Income Tax and Shareholders' Equity

As at December 31, 2016, 2017 and 2018, if the market interest rate had increased/decreased by 100 bp with other variables held constant, the effects on profit before income tax and shareholders’ equity would be as follows:

(In millions of Korean won)		Fluctuation of interest rate		Income before tax				Shareholders’ equity
2016.12.31		+ 100 bp		￦	(3,456	)		￦	(1,673	)
		- 100 bp			3,445				(5,025	)
2017.12.31		+ 100 bp		￦	1,942			￦	4,868
		- 100 bp			(1,954	)			(5,198	)
2018.12.31		+ 100 bp		￦	1,059			￦	9,689
		- 100 bp			(1,958	)			(10,237	)

X

- Definition

The disclosure of the credit risk exposure. Credit risk exposure is the credit risk inherent in an entity’s financial assets and commitments to extend credit.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph 35M
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35M&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_DisclosureOfCreditRiskExposureExplanatory
Namespace Prefix:	ifrs-full_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of the reconciliation of the net amounts presented in the statement of financial position for financial assets that are offset or that are subject to an enforceable master netting arrangement or similar agreement, to the individual line item amounts presented in the statement of financial position. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph B46
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_B46&doctype=Appendix&seq=2
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_DisclosureOfReconciliationOfFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsToIndividualLineItemsInStatementOfFinancialPositionExplanatory
Namespace Prefix:	ifrs-full_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of the reconciliation of the net amounts presented in the statement of financial position for financial liabilities that are offset or that are subject to an enforceable master netting arrangement or similar agreement, to the individual line item amounts presented in the statement of financial position. [Refer: Financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph B46
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_B46&doctype=Appendix&seq=2
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_DisclosureOfReconciliationOfFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsToIndividualLineItemsInStatementOfFinancialPositionExplanatory
Namespace Prefix:	ifrs-full_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of a maturity analysis for derivative financial liabilities, including the remaining contractual maturities for those derivative financial liabilities for which contractual maturities are essential for an understanding of the timing of the cash flows. [Refer: Derivative financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph 39
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_39_b&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_MaturityAnalysisForDerivativeFinancialLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of the sensitivity analysis for types of market risk to which the entity is exposed, showing how profit or loss and equity would have been affected by changes in the relevant risk variable that were reasonably possible at that date. [Refer: Market risk [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph 40
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_40_a&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_SensitivityAnalysisForEachTypeOfMarketRisk
Namespace Prefix:	ifrs-full_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of debt equity ratio.

+ References

No definition available.

+ Details

Name:	kt_DisclosureOfDebtEquityRatioExplanatory
Namespace Prefix:	kt_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of detail information about gearing ratio.

+ References

No definition available.

+ Details

Name:	kt_DisclosureOfDetailInformationAboutGearingRatioExplanatory
Namespace Prefix:	kt_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of financial assets and financial liabilities.

+ References

No definition available.

+ Details

Name:	kt_DisclosureOfFinancialAssetsAndFinancialLiabilitiesExplanatory
Namespace Prefix:	kt_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of maturity analysis for non-derivative and derivative financial liabilities.

+ References

No definition available.

+ Details

Name:	kt_DisclosureOfMaturityAnalysisForNonderivativeAndDerivativeFinancialLiabilitiesExplanatory
Namespace Prefix:	kt_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_CurrencyRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_EquityPriceRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_InterestRateRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: