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General Information (Tables)

12 Months Ended

Dec. 31, 2019

Text block [abstract]

Summary of Consolidated Subsidiaries

The consolidated subsidiaries as at December 31, 2018 and 2019, are as follows:

						Controlling percentage ownership1 (%)
Subsidiary		Type of Business		Location		December 31, 2018		December 31, 2019		Closing month
KT Powertel Co., Ltd.2		Trunk radio system business		Korea		44.8%		44.8%		December
KT Linkus Co., Ltd.		Public telephone maintenance		Korea		92.4%		92.4%		December
KT Submarine Co., Ltd.2, 4		Submarine cable construction and maintenance		Korea		39.3%		39.3%		December
KT Telecop Co., Ltd.		Security service		Korea		86.8%		86.8%		December
KT Hitel Co., Ltd.		Data communication		Korea		67.1%		67.1%		December
KT Service Bukbu Co., Ltd.		Opening services of fixed line		Korea		67.3%		67.3%		December
KT Service Nambu Co., Ltd.		Opening services of fixed line		Korea		77.3%		77.3%		December
KT Commerce Inc.		B2C, B2B service		Korea		100.0%		100.0%		December
KT Strategic Investment Fund No.2		Investment fund		Korea		100.0%		100.0%		December
KT Strategic Investment Fund No.3		Investment fund		Korea		100.0%		100.0%		December
KT Strategic Investment Fund No.4		Investment fund		Korea		100.0%		100.0%		December
KT Strategic Investment Fund No.5		Investment fund		Korea		—		100.0%		December
BC-VP Strategic Investment Fund No.1		Investment fund		Korea		100.0%		100.0%		December
BC Card Co., Ltd.		Credit card business		Korea		69.5%		69.5%		December
VP Inc.		Payment security service for credit card, others		Korea		50.9%		50.9%		December
H&C Network		Call centre for financial sectors		Korea		100.0%		100.0%		December
BC Card China Co., Ltd.		Software development and data processing		China		100.0%		100.0%		December
INITECH Co., Ltd.4		Internet banking ASP and security solutions		Korea		58.2%		58.2%		December
Smartro Co., Ltd.		VAN (Value Added Network) business		Korea		81.1%		64.5%		December
KTDS Co., Ltd.4		System integration and maintenance		Korea		95.5%		95.5%		December
KT M Hows Co., Ltd.		Mobile marketing		Korea		90.0%		90.0%		December
KT M&S Co., Ltd.		PCS distribution		Korea		100.0%		100.0%		December
GENIE Music Corporation (KT Music Corporation)2		Online music production and distribution		Korea		36.0%		36.0%		December
KT MOS Bukbu Co., Ltd.4		Telecommunication facility maintenance		Korea		100.0%		100.0%		December
KT MOS Nambu Co., Ltd.4		Telecommunication facility maintenance		Korea		98.4%		98.4%		December
KT Skylife Co., Ltd.4		Satellite broadcasting business		Korea		50.3%		50.3%		December
Skylife TV Co., Ltd.		TV contents provider		Korea		92.6%		92.6%		December
KT Estate Inc.		Residential building development and supply		Korea		100.0%		100.0%		December
KT AMC Co., Ltd.		Asset management and consulting services		Korea		100.0%		100.0%		December
NEXR Co., Ltd.		Cloud system implementation		Korea		100.0%		100.0%		December
KTGDH Co., Ltd.(KTSB Data service)		Data centre development and related service		Korea		51.0%		100.0%		December
KT Sat Co., Ltd.		Satellite communication business		Korea		100.0%		100.0%		December
Nasmedia Co., Ltd.3,4		Solution provider and IPTV advertisement sales business		Korea		42.8%		44.0%		December
KT Sports Co., Ltd.		Management of sports group		Korea		100.0%		100.0%		December
KT Music Contents Fund No.1		Music contents investment business		Korea		80.0%		80.0%		December
KT Music Contents Fund No.2		Music contents investment business		Korea		100.0%		100.0%		December
KT-Michigan Global Content Fund		Content investment business		Korea		88.6%		88.6%		December
Autopion Co., Ltd.		Information and communication service		Korea		100.0%		100.0%		December
KTCS Corporation2,4		Database and online information provider		Korea		30.9%		30.9%		December
KTIS Corporation2,4		Database and online information provider		Korea		30.1%		30.1%		December
KT M mobile		Special category telecommunications operator and sales of communication device		Korea		100.0%		100.0%		December
KT Investment Co., Ltd.		Technology business finance		Korea		100.0%		100.0%		December
Whowho&Company Co., Ltd.		Software development and supply		Korea		100.0%		100.0%		December
PlayD Co., Ltd. (N Search Marketing Co., Ltd.)		Advertising agency		Korea		100.0%		100.0%		December
Next connect PFV		Residential building development and supply		Korea		100.0%		100.0%		December
KT Rwanda Networks Ltd.		Network installation and management		Rwanda		51.0%		51.0%		December
AOS Ltd.		System integration and maintenance		Rwanda		51.0%		51.0%		December
KT Belgium		Foreign investment business		Belgium		100.0%		100.0%		December
KT ORS Belgium		Foreign investment business		Belgium		100.0%		100.0%		December
Korea Telecom Japan Co., Ltd.		Foreign telecommunication business		Japan		100.0%		100.0%		December
KBTO sp.zo.o.		Electronic communication business		Poland		96.2%		97.2%		December
Korea Telecom China Co., Ltd.		Foreign telecommunication business		China		100.0%		100.0%		December
KT Dutch B.V.		Super iMax and East Telecom management		Netherlands		100.0%		100.0%		December
Super iMax LLC		Wireless high speed internet business		Uzbekistan		100.0%		100.0%		December
East Telecom LLC		Fixed line telecommunication business		Uzbekistan		91.0%		91.0%		December
Korea Telecom America, Inc.		Foreign telecommunication business		USA		100.0%		100.0%		December
PT. KT Indonesia		Foreign telecommunication business		Indonesia		99.0%		99.0%		December
PT. BC Card Asia Pacific		Software development and supply		Indonesia		99.9%		99.9%		December
KT Hongkong Telecommunications Co., Ltd.		Fixed line communication business		Hong Kong		100.0%		100.0%		December
Korea Telecom Singapore Pte. Ltd.		Foreign investment business		Singapore		100.0%		100.0%		December
Texnoprosistem LLP		Fixed line internet business		Uzbekistan		100.0%		100.0%		December
Nasmedia Thailand Co., Ltd.		Internet advertising solution		Thailand		99.9%		99.9%		December
KT Huimangjieum		Manufacturing		Korea		—		100.0%		December
GE Premier 1st Corporate Restructuring Real Estate Investment Trust Co.		Residential building investment and rent		Korea		—		63.5%		December
K-REALTY RENTAL HOUSING REIT 3		Residential building		Korea		—		100.0%		December

1 Sum of the ownership interests owned by the Controlling Company and subsidiaries.

2 Although the Controlling Company owns less than 50% ownership in this entity, this entity is consolidated as the Controlling Company can exercise the majority voting rights in its decision-making process at all times considering the historical voting pattern at the shareholders’ meetings.

3 Although the Controlling Company owns less than 50% ownership in this entity, this entity is consolidated as the Controlling Company holds the majority of voting right based on an agreement with other investors.

4 The number of subsidiaries’ treasury stock is deducted from the total number of shares when calculating the controlling percentage ownership.

Changes in scope of consolidation in 2019 are as follows:

Changes		Location		Subsidiary		Reason
Included		Korea		KT Strategic Investment Fund No.5		Newly established
		Korea		KT Huimangjieum		Newly established
		Korea		K-REALTY RENTAL HOUSING REIT 3		Newly established
		Korea		GE Premier 1st Corporate Restructuring Real Estate Investment Trust Co.		Substantial Control Held
Excluded		Hongkong		KT Hong Kong Limited		Liquidated
		Korea		KT Strategic Investment Fund No.1		Liquidated

Summarized information for consolidated subsidiaries as at and for the years ended December 31, 2017, 2018 and 2019, follows:

(In millions of Korean won)		2017
		Total assets				Total liabilities				Operating revenue				Profit (loss) for the year
KT Powertel Co., Ltd.		￦	115,125			￦	18,937			￦	69,234			￦	2,112
KT Linkus Co., Ltd.			59,344				51,516				112,043				725
KT Submarine Co., Ltd.			142,797				34,056				73,985				8,243
KT Telecop Co., Ltd.			264,353				131,633				317,591				2,885
KT Hitel Co., Ltd.			258,240				52,943				227,884				3,225
KT Service Bukbu Co., Ltd.			29,281				22,096				194,837				688
KT Service Nambu Co., Ltd.			36,076				26,412				232,996				875
BC Card Co., Ltd.1			4,048,263				2,955,038				3,628,995				156,109
H&C Network1			273,856				65,446				277,622				16,104
Nasmedia Co., Ltd.1			315,967				188,197				120,667				26,676
KTDS Co., Ltd.1			144,922				93,343				459,266				11,584
KT M Hows Co., Ltd.			42,738				28,489				24,610				4,097
KT M&S Co., Ltd.			242,388				231,151				734,420				(9,707	)
GENIE Music Corporation (KT Music Corporation)			139,686				48,512				156,163				(3,401	)
KT Skylife Co., Ltd.1			792,893				210,550				687,752				57,314
KT Estate Inc.1			1,869,194				502,915				428,446				52,416
KTGDH Co., Ltd. (KTSB Data service)			18,306				605				4,950				(1,651	)
KT Sat Co., Ltd.			742,391				220,804				147,649				29,601
KT Sports			11,131				7,805				53,357				(199	)
KT Music Contents Fund No.1			13,804				1,041				370				(499	)
KT Music Contents Fund No.2			7,500				11				—				(11	)
KT-Michigan Global Content Fund			14,575				147				159				(426	)
Autopion Co., Ltd.			6,306				3,530				6,679				(618	)
KT M mobile Co., Ltd.			93,601				21,453				159,684				(38,883	)
KT Investment Co., Ltd.1			54,673				38,313				8,794				(619	)
KTCS Corporation1			348,334				188,764				968,186				7,385
KTIS Corporation			223,818				62,569				438,597				8,337
Korea Telecom Japan Co., Ltd.1			1,554				2,788				2,772				536
Korea Telecom China Co., Ltd.			665				32				1,030				348
KT Dutch B.V.			30,312				50				206				169
Super iMax LLC			3,449				4,886				7,314				(4,584	)
East Telecom LLC1			11,672				11,748				19,663				(9,118	)
Korea Telecom America, Inc.			3,694				791				6,783				109
PT. KT Indonesia			8				—				—				(6	)
KT Rwanda Networks Ltd.2			151,359				139,561				15,931				(22,762	)
KT Belgium			86,455				8				49				(2	)
KT ORS Belgium			1,769				14				10				(10	)
KBTO sp.zo.o.			3,311				2,268				67				(3,456	)
AOS Ltd.2			9,437				4,519				8,952				(682	)
KT Hongkong Telecommunications Co., Ltd.			2,578				1,497				7,304				494

(In millions of Korean won)		2018
		Total assets				Total liabilities				Operating revenue				Profit (loss) for the year
KT Powertel Co., Ltd.		￦	124,064			￦	28,217			￦	65,620			￦	(5,545	)
KT Linkus Co., Ltd.			54,147				44,895				106,337				1,216
KT Submarine Co., Ltd.			130,715				27,530				61,652				(4,286	)
KT Telecop Co., Ltd.			272,492				140,314				328,262				166
KT Hitel Co., Ltd.			272,708				66,043				279,117				657
KT Service Bukbu Co., Ltd.			30,599				23,964				195,961				(31	)
KT Service Nambu Co., Ltd.			37,452				27,939				230,088				160
BC Card Co., Ltd.1			3,722,379				2,630,536				3,551,715				70,889
H&C Network1			245,841				63,188				297,470				(15,944	)
Nasmedia Co., Ltd.1			303,112				161,164				106,805				20,596
KTDS Co., Ltd.1			148,675				95,834				434,302				8,586
KT M Hows Co., Ltd.			60,197				42,386				26,673				3,691
KT M&S Co., Ltd.			228,073				207,740				791,652				11,408
GENIE Music Corporation (KT Music Corporation)			221,559				75,827				171,314				6,374
KT MOS Bukbu Co., Ltd.			14,121				10,571				16,543				(782	)
KT MOS Nambu Co., Ltd.			14,313				8,927				14,941				(2,418	)
KT Skylife Co., Ltd.1			816,001				149,841				694,059				52,010
KT Estate Inc.1			1,695,995				304,712				569,269				51,854
KTGDH Co., Ltd. (KTSB Data service)			8,632				523				4,627				(9,576	)
KT Sat Co., Ltd.			685,926				173,513				137,186				4,921
KT Sports Co., Ltd.			9,560				6,376				55,565				(154	)
KT Music Contents Fund No.1			14,092				1,035				559				294
KT Music Contents Fund No.2			7,629				281				150				(142	)
KT-Michigan Global Content Fund			12,741				—				869				(670	)
Autopion Co., Ltd.			8,838				5,801				12,035				453
KT M mobile Co., Ltd.			146,334				35,335				172,674				(10,085	)
KT Investment Co., Ltd.1			74,580				58,040				8,095				247
KTCS Corporation1			350,280				188,561				1,019,787				11,401
KTIS Corporation			229,246				68,997				451,532				7,900
Next connect PFV			385,769				34,370				143				(12,449	)
Korea Telecom Japan Co., Ltd.1			1,326				2,910				1,965				(126	)
Korea Telecom China Co., Ltd.			661				22				681				10
KT Dutch B.V.			31,693				41				191				105
Super iMax LLC			4,150				4,528				4,845				(424	)
East Telecom LLC1			16,590				14,263				15,087				2,639
Korea Telecom America, Inc.			4,218				832				7,554				350
PT. KT Indonesia			8				—				—				—
KT Rwanda Networks Ltd.2			144,129				162,801				15,150				(29,238	)
KT Belgium			90,172				1				29				(43	)
KT ORS Belgium			6,709				5				—				(46	)
KBTO sp.zo.o.			1,364				217				202				(3,771	)
AOS Ltd.2			14,018				4,952				6,300				(680	)
KT Hongkong Telecommunications Co., Ltd.			3,616				2,143				9,990				351

1 These companies are the intermediate controlling companies of other subsidiaries and the above financial information is from their consolidated financial statements.

2 At the end of the reporting period, convertible preferred stock issued by subsidiaries is included in liabilities.

(In millions of Korean won)		2019
		Total assets				Total liabilities				Operating revenue				Profit (loss) for the year
KT Powertel Co., Ltd.		￦	118,052			￦	19,766			￦	62,846			￦	3,085
KT Linkus Co., Ltd.			70,494				62,088				97,892				(2,258	)
KT Submarine Co., Ltd.			120,947				18,452				55,244				486
KT Telecop Co., Ltd.			279,878				153,841				332,063				(4,875	)
KT Hitel Co., Ltd.			279,818				74,769				323,065				1,426
KT Service Bukbu Co., Ltd.			64,802				58,984				219,427				(445	)
KT Service Nambu Co., Ltd.			63,917				55,548				266,148				280
BC Card Co., Ltd.1			3,912,982				2,594,232				3,553,008				115,885
H&C Network1			282,016				68,401				320,701				(1,593	)
Nasmedia Co., Ltd.1			356,236				203,105				117,550				22,484
KTDS Co., Ltd.1			158,153				105,462				428,758				9,027
KT M Hows Co., Ltd.			74,326				50,638				33,443				6,771
KT M&S Co., Ltd.			248,142				215,777				813,498				12,732
GENIE Music Corporation (KT Music Corporation)			234,131				80,952				230,480				7,658
KT MOS Bukbu Co., Ltd.			33,376				28,841				63,761				353
KT MOS Nambu Co., Ltd.			34,258				26,722				67,300				3,099
KT Skylife Co., Ltd.1			848,276				142,839				704,996				56,008
KT Estate Inc.1			1,686,000				295,706				485,686				48,552
KTGDH Co., Ltd. (KTSB Data service)			10,437				1,628				3,977				344
KT Sat Co., Ltd.			651,195				127,523				168,376				16,497
KT Sports Co., Ltd.			15,603				8,333				55,241				(464	)
KT Music Contents Fund No.1			10,579				1,677				521				345
KT Music Contents Fund No.2			7,675				279				331				48
KT-Michigan Global Content Fund			11,688				61				248				(1,113	)
Autopion Co., Ltd.			7,460				4,894				5,604				(302	)
KT M mobile Co., Ltd.			135,917				30,603				161,720				(5,580	)
KT Investment Co., Ltd.1			73,463				56,212				13,375				847
KTCS Corporation1			378,171				213,983				944,778				7,597
KTIS Corporation			305,798				137,524				454,561				9,205
Next connect PFV			385,412				24,275				1,590				(5,898	)
Korea Telecom Japan Co., Ltd.1			1,851				2,858				2,891				651
Korea Telecom China Co., Ltd.			879				39				844				192
KT Dutch B.V.			31,003				50				—				(242	)
Super iMax LLC			3,568				5,304				4,604				(631	)
East Telecom LLC1			20,857				16,302				17,186				2,140
Korea Telecom America, Inc.			4,611				537				6,808				572
PT. KT Indonesia			8				—				—				—
KT Rwanda Networks Ltd.2			132,461				183,164				18,013				(31,662	)
KT Belgium			93,321				11				—				(64	)
KT ORS Belgium			6,913				14				—				(43	)
KBTO sp.zo.o.			1,767				245				519				(3,457	)
AOS Ltd.2			12,337				3,993				6,982				(591	)
KT Hongkong Telecommunications Co., Ltd.			5,126				2,923				13,321				586
KT Huimangjieum			2,129				1,019				1,027				(390	)
GE Premier 1st Corporate Restructuring Real Estate Investment Trust Co.			6,285				1,139				176				70
K-REALTY RENTAL HOUSING REIT 3			300				—				—				—

1 These companies are the intermediate controlling companies of other subsidiaries and the above financial information is from their consolidated financial statements.

2 At the end of the reporting period, convertible preferred stock issued by subsidiaries is included in liabilities.

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The disclosure of subsidiaries. [Refer: Subsidiaries [member]]

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