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Risk Management (Tables)

12 Months Ended

Dec. 31, 2018

Risk Management [Abstract]

Capital risk management

Details of the Company’s capital management accounts as of December 31, 2017 and 2018 are as follows:

						2017				2018
						In millions of won
Total borrowings and debt securities		￦					54,747,392				61,034,627
Cash and cash equivalents							2,369,739				1,358,345
Net borrowings and debt securities							52,377,653				59,676,282
Total shareholder’s equity							72,964,641				71,092,762
Debt to equity ratio							71.78	%			83.94	%

Credit risk management

Book values of the financial assets represent the maximum exposed amounts of the credit risk. Details of the Company’s level of maximum exposure to credit risk as of December 31, 2017 and 2018 are as follows:

						2017				2018
						In millions of won
Cash and cash equivalents		￦					2,369,739				1,358,345
Financial assets at fair value through profit or loss							—				920,935
Financial assets at fair value through profit or loss							111,512				—
Derivative assets (trading)							22,020				37,631
Equity investment at fair value through other comprehensive income							—				399,495
Available-for-sale financial assets							699,833				—
Financial assets at amortized cost							—				14,042
Held-to-maturity investments							3,144				—
Loans							905,641				718,674
Long-term/short-term financial instruments							2,244,514				2,318,027
Derivative assets (applying hedge accounting)							10,606				64,704
Trade and other receivables							9,683,769				9,613,437
Financial guarantee contracts(*)							1,154,862				1,310,817

(*) Maximum exposure associated with the financial guarantee contracts is the maximum amounts of the obligation.

As of the reporting date, there are no financial assets and non-financial assets that were acquired through the exercise of the right of collateralized assets and reinforcement of credit arrangement.

Sensitivity analysis of Defined benefit obligation

A sensitivity analysis of defined benefit obligation assuming a 1% increase and decrease movements in the actuarial valuation assumptions as of December 31, 2017 and 2018 are as follows:

								2017								2018
Type		Accounts						1% Increase				1% Decrease				1% Increase				1% Decrease
		In millions of won
Future salary increases		Increase (decrease) in defined benefit obligation		￦					354,852				(305,494	)			416,956				(363,820	)
Discount rate		Increase (decrease) in defined benefit obligation							(313,597	)			377,148				(377,221	)			445,833

Changes of employee benefits assuming a 1% increase and decrease movements in discount rate on plan asset for the years ended December 31, 2017 and 2018 are ￦8,926 million and ￦14,646 million, respectively.

Changes in provisions due to movements in underlying assumptions

Changes in provisions due to movements in underlying assumptions as of December 31, 2017 and 2018 are as follows:

Type		Accounts		2017				2018
PCBs		Inflation rate			1.23	%			1.27	%
		Discount rate			2.55	%			2.18	%
Nuclear plants		Inflation rate			1.21	%			1.21	%
		Discount rate			2.94	%			2.94	%
Spent fuel		Inflation rate			2.93	%			2.93	%
		Discount rate			4.49	%			4.49	%

Sensitivity analysis of Provisions due to movements in underlying assumptions

A sensitivity analysis of provisions assuming a 0.1% increase and decrease movements in the underlying assumptions as of December 31, 2017 and 2018 are as follows:

								2017								2018
Type		Accounts						0.1% Increase				0.1% Decrease				0.1% Increase				0.1% Decrease
		In millions of won
Discount rate		PCBs		￦					(811	)			816				(623	)			627
		Nuclear plants							(262,949	)			270,370				(256,513	)			263,595
		Spent fuel							(51,015	)			52,997				(49,182	)			51,098
Inflation rate		PCBs							826				(822	)			632				(629	)
		Nuclear plants							287,926				(280,249	)			294,984				(287,110	)
		Spent fuel							53,763				(51,823	)			51,837				(49,961	)

Foreign currency risk

The Company undertakes transactions denominated in foreign currencies; consequently, exposures to exchange rate fluctuations arise. The carrying amounts of the Company’s foreign currency denominated monetary assets and monetary liabilities as of December 31, 2017 and 2018 are as follows:

		Assets								Liabilities
Type		2017				2018				2017				2018
		In thousands of foreign currencies
AED			5,693				10,513				2,049				5,890
AUD			145				143				652,259				717,712
BDT			60,208				71,575				1,001				1,175
BWP			797				1,214				—				—
CAD			82				96				171				4
CHF			—				—				400,004				400,000
CNY			13,007				—				26,140				26,140
EUR			5,708				337				68,003				105,673
GBP			3				—				2,327				1
HKD			—				—				—				1,650,000
IDR			167,775				60,568				—				206,935
INR			1,228,259				1,228,795				227,078				183,963
JOD			1,624				2,764				5				5
JPY			799,501				35,935				21,624,128				390,921
KZT			359				319				—				—
MGA			2,762,572				3,318,447				319,581				170,641
NOK			—				—				482				—
PHP			189,261				709,285				125,431				66,985
PKR			251,190				305,542				4,676				3,588
SAR			1,191				2,024				44				—
SEK			—				—				449,002				450,000
USD			1,653,858				1,422,510				8,321,335				8,103,602
UYU			12,955				39,898				10,586				4,253
ZAR			361				170				4				4
MMK			—				25,208				—				—
GHS			—				25,794				—				—

Sensitivity analysis of Foreign currency risk

A sensitivity analysis on the Company’s income for the period assuming a 10% increase and decrease in currency exchange rates as of December 31, 2017 and 2018 are as follows:

						2017								2018
Type						10% Increase				10% Decrease				10% Increase				10% Decrease
						In millions of won
Increase (decrease) of profit before income tax		￦					(844,122	)			844,122				(887,561	)			887,561
Increase (decrease) of shareholder’s equity(*)							(844,122	)			844,122				(887,561	)			887,561

(*) The effect on the shareholders’ equity excluding the impact of income taxes.

Interest rate risk

The Company’s borrowings and debt securities with floating interest rates as of December 31, 2017 and 2018 are as follows:

Type						2017				2018
						In millions of won
Short-term borrowings		￦					290,873				24,235
Long-term borrowings							1,743,252				2,358,860
Debt securities							685,700				—
		￦					2,719,825				2,383,095

Sensitivity analysis of Interest rate risk

A sensitivity analysis on the Company’s long-term borrowings and debt securities assuming a 1% increase and decrease in interest rates, without consideration of hedge effect of related derivatives for the years ended December 31, 2017 and 2018 are as follows:

						2017								2018
Type						1% Increase				1% Decrease				1% Increase				1% Decrease
						In millions of won
Increase (decrease) of profit before income tax		￦					(27,198	)			27,198				(23,831	)			23,831
Increase (decrease) of shareholder’s equity(*)							(27,198	)			27,198				(23,831	)			23,831

(*) The effect on the shareholders’ equity excluding the impact of income taxes.

Electricity rates risk

A sensitivity analysis on the Company’s income for the period assuming a 1% increase and decrease in price of electricity for the years ended December 31, 2017 and 2018 are as follows:

						2017								2018
Type						1% Increase				1% Decrease				1% Increase				1% Decrease
						In millions of won
Increase (decrease) of profit before income tax		￦					546,499				(546,499	)			568,420				(568,420	)
Increase (decrease) of shareholder’s equity(*)							546,499				(546,499	)			568,420				(568,420	)

(*) The effect on the shareholders’ equity excluding the impact of income taxes.

Details of maturities of non-derivative financial liabilities

The following table shows the details of maturities of non-derivative financial liabilities as of December 31, 2017 and 2018. This table, based on the undiscounted cash flows of the non-derivative financial liabilities including estimated interests, has been prepared based on the respective liabilities’ earliest maturity date.

						2017
Type						Less than 1 year				1~2 Years				2~5 Years				More than 5 years				Total
						In millions of won
Borrowings and debt securities		￦					10,748,437				7,948,320				21,331,394				22,694,867				62,723,018
Finance lease liabilities							174,534				87,709				185,284				108,749				556,276
Trade and other payables							5,867,729				301,165				698,289				1,937,558				8,804,741
Financial guarantee contracts(*)							7,081				18,054				1,049,667				80,060				1,154,862
		￦					16,797,781				8,355,248				23,264,634				24,821,234				73,238,897

						2018
Type						Less than 1 year				1~2 Years				2~5 Years				More than 5 years				Total
						In millions of won
Borrowings and debt securities		￦					10,204,471				9,274,378				28,143,311				25,312,534				72,934,694
Finance lease liabilities							87,709				87,709				141,074				65,250				381,742
Trade and other payables							6,348,195				150,479				375,661				2,188,950				9,063,285
Financial guarantee contracts(*)							91,722				855,488				363,607				—				1,310,817
		￦					16,732,097				10,368,054				29,023,653				27,566,734				83,690,538

(*) This represents the total guarantee amounts associated with the financial guarantee contracts. Financial guarantee liabilities which are recognized as of December 31, 2017 and 2018 are ￦23,475 million and ￦15,586 million, respectively.

The expected maturities for non-derivative financial assets

The expected maturities for non-derivative financial assets as of December 31, 2017 and 2018 in detail are as follows:

						2017
Type						Less than 1 year				1~5 Years				More than 5 years				Other(*)				Total
						In millions of won
Cash and cash equivalents		￦					2,369,739				—				—				—				2,369,739
Available-for-sale financial assets							—				—				214,156				485,677				699,833
Held-to-maturity investments							5				3,139				—				—				3,144
Loans							244,309				261,672				429,628				10,821				946,430
Long-term/short-term financial instruments							1,702,084				201,821				340,304				305				2,244,514
Financial assets at fair value through profit or loss							—				—				111,512				—				111,512
Trade and other receivables							7,930,715				920,539				788,795				52,031				9,692,080
		￦					12,246,852				1,387,171				1,884,395				548,834				16,067,252

						2018
Type						Less than 1 year				1~5 Years				More than 5 years				Other(*)				Total
						In millions of won
Cash and cash equivalents		￦					1,358,345				—				—				—				1,358,345
Equity investment at fair value through other comprehensive income							—				—				—				399,495				399,495
Financial assets at amortized cost							11,956				2,086				—				—				14,042
Loans							123,646				314,744				319,988				—				758,378
Long-term/short-term financial instruments							1,869,286				278,899				164,057				5,785				2,318,027
Financial assets at fair value through profit or loss							313,893				81,828				483,398				41,816				920,935
Trade and other receivables							7,795,619				1,067,800				701,743				57,651				9,622,813
		￦					11,472,745				1,745,357				1,669,186				504,747				15,392,035

(*) The maturities cannot be presently determined.

Derivative liabilities classified by maturity periods which from reporting date to maturity date of contract

Derivative liabilities classified by maturity periods which from reporting date to maturity date of contract as of December 31, 2017 and 2018 are as follows:

						2017
Type						Less than 1 year				1~2 Years				2~5 Years				More than 5 years				Total
						In millions of won
Net settlement
—Trading		￦					(774	)			—				—				—				(774	)
Gross settlement
—Trading							(51,496	)			(19,887	)			(16,597	)			(4,967	)			(92,947	)
—Hedging							(17,547	)			(28,977	)			(192,205	)			(44,137	)			(282,866	)
		￦					(69,817	)			(48,864	)			(208,802	)			(49,104	)			(376,587	)

						2018
Type						Less than 1 year				1~2 Years				2~5 Years				More than 5 years				Total
						In millions of won
Net settlement
—Trading		￦					—				—				—				—				—
Gross settlement
—Trading							5,734				16,565				28,283				40,124				90,706
—Hedging							5,154				(43,447	)			71,840				(40,917	)			(7,370	)
		￦					10,888				(26,882	)			100,123				(793	)			83,336

Fair value and book value of financial assets and liabilities

Fair value and book value of financial assets and liabilities as of December 31, 2017 and 2018 are as follows:

						2017								2018
Type						Book value				Fair value				Book value				Fair value
						In millions of won
Assets recognized at fair value
Financial assets at fair value through other comprehensive income		￦					—				—				399,495				399,495
Available-for-sale financial assets(*1)							699,833				699,833				—				—
Derivative assets (trading)							22,020				22,020				37,631				37,631
Derivative assets (applying hedge accounting)							10,606				10,606				64,704				64,704
Long-term financial instruments							542,430				542,430				—				—
Short-term financial instruments							1,702,084				1,702,084				—				—
Financial assets at fair value through profit or loss							—				—				920,935				920,935
Financial assets at fair value through profit or loss							111,512				111,512				—				—
		￦					3,088,485				3,088,485				1,422,765				1,422,765
Assets carried at amortized cost
Financial assets at amortized cost		￦					—				—				14,042				14,042
Held-to-maturity investments							3,144				3,144				—				—
Loans and receivables							905,641				905,641				718,674				718,674
Long-term financial instruments							—				—				448,741				448,741
Short-term financial instruments							—				—				1,869,286				1,869,286
Trade and other receivables							9,683,769				9,683,769				9,613,437				9,613,437
Cash and cash equivalents							2,369,739				2,369,739				1,358,345				1,358,345
		￦					12,962,293				12,962,293				14,022,525				14,022,525
Liabilities recognized at fair value
Derivative liabilities (trading)		￦					150,929				150,929				99,010				99,010
Derivative liabilities (applying hedge accounting)							277,130				277,130				213,153				213,153
		￦					428,059				428,059				312,163				312,163
Liabilities carried at amortized cost
Secured borrowings		￦					1,055,554				1,055,554				741,029				741,029
Unsecured bond							51,146,783				53,436,659				56,603,988				58,804,070
Finance lease liabilities							418,260				418,260				283,806				283,806
Unsecured borrowings							2,476,196				2,477,055				3,522,602				3,950,517
Trade and other payables(*2)							8,804,741				8,804,741				9,063,285				9,063,285
Bank overdraft							68,859				68,859				167,008				167,008
		￦					63,970,393				66,261,128				70,381,718				73,009,715

(*1) Book value of equity securities held by the Company that were measured at cost as of December 31, 2017 is ￦37,926 million as a quoted market price does not exist in an active market and its fair value cannot be measured reliably.

(*2) Excludes finance lease liabilities.

Interest rates used for determining fair value

The discount rate used for calculating fair value as of December 31, 2017 and 2018 are as follows:

Type		2017				2018
Derivatives			0.03% ~ 4.16%				0.02% ~ 4.16%
Borrowings and debt securities			0.08% ~ 4.38%				0.51% ~ 5.14%
Finance lease			9.00% ~ 10.83%				3.50% ~ 10.83%

Fair value hierarchy

Fair values of financial instruments by hierarchy level as of December 31, 2017 and 2018 are as follows:

						2017
Type						Level 1				Level 2				Level 3				Total
						In millions of won
Financial assets at fair value
Available-for-sale financial assets		￦					274,453				214,156				173,298				661,907
Derivative assets							—				18,466				14,160				32,626
Financial assets at fair value through profit or loss							—				111,512				—				111,512
		￦					274,453				344,134				187,458				806,045
Financial liabilities at fair value
Derivative liabilities		￦					—				428,059				—				428,059
						2018
Type						Level 1				Level 2				Level 3				Total
						In millions of won
Financial assets at fair value
Financial assets at fair value through other comprehensive income		￦					210,056				—				189,439				399,495
Derivative assets							—				100,490				1,845				102,335
Financial assets at fair value through profit or loss							106,600				809,283				5,052				920,935
		￦					316,656				909,773				196,336				1,422,765,
Financial liabilities at fair value
Derivative liabilities		￦					—				310,008				2,155				312,163

Changes of financial assets and liabilities which are classified as level 3

Changes of financial assets and liabilities which are classified as level 3 for the years ended December 31, 2017 and 2018 are as follows:

						2017
						Beginning balance				Acquisition				Reclassified category				Valuation				Disposal				Foreign currency translation				Ending balance
						In millions of won
Financial assets at fair value
Available-for-sale financial assets
Unlisted securities		￦					269,461				—				(92,128	)			(6,201	)			—				2,166				173,298

						2018
						Beginning balance				Effect of change in accounting policy				Acquisition				Reclassified category				Valuation				Disposal				Foreign currency translation				Ending balance
						In millions of won
Financial assets at fair value
Financial assets at fair value through profit or loss
Cooperative		￦					—				5,038				—				—				14				—				—				5,052
Financial assets at fair value through other comprehensive income
Unlisted securities							—				197,450				—				—				(11,744	)			(326	)			4,059				189,439

X

- Definition

The disclosure of an analysis of the present value of a defined benefit obligation that distinguishes the nature, characteristics and risks of the obligation. Such a disclosure could distinguish: (a) between amounts owing to active members, deferred members, and pensioners; (b) between vested benefits and accrued but not vested benefits; and (c) between conditional benefits, amounts attributable to future salary increases and other benefits. [Refer: Defined benefit obligation, at present value]

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The entire disclosure for foreign currency transactions and translation. This may include description of foreign currency transactions, foreign currency gains and losses, explanation of change in cumulative translation adjustment, description of effect of subsequent foreign currency exchange rate change, cumulative translation adjustment movement, foreign currency translation adjustment by component movement, translation adjustment for net investment hedge movement, adjustment for long-term intercompany transactions, schedule of long-term intercompany balances and any other foreign currency transactions and translation related items.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-URI http://asc.fasb.org/topic&trid=2175825

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