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Consolidated Statements Of Cash Flows - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Cash flows provided by operating activities |  |  |
Profit (loss) for the period | ₩ (2,263,535) | ₩ (1,174,498) | ₩ 1,441,394
Adjustments for: |  |  |
Income Tax expense (benefit) | (1,002,303) | (826,321) | 2,172,824
Depreciation | 10,971,825 | 9,905,856 | 9,660,039
Amortization | 156,915 | 118,938 | 113,672
Employee benefit expense | 725,120 | 360,575 | 391,360
Bad debt expense | 16,629 | 57,468 | 126,326
Interest expense | 2,046,811 | 1,868,458 | 1,789,552
Loss on sale of financial assets | 2,106 | 1 | 2,343
Loss on disposals of property, plant and equipment | 72,508 | 60,704 | 70,514
Loss on abandonment of property, plant, and equipment | 364,233 | 481,176 | 424,091
Impairment loss on property, plant and equipment | 50,034 | 710,162 | 51,067
Impairment loss on intangible assets | 513,609 | 8,112 | 20
Loss on disposal of intangible assets | 827 | 43 | 183
Increase to provisions | 2,301,215 | 1,056,994 | 1,690,120
Loss (gain) on foreign currency translation, net | 370,309 | 243,378 | (902,878)
Gain on valuation of financial assets at fair value through profit or loss | (5,575) | (8,495) | 0
Loss on valuation of financial assets at fair value through profit or loss | 4,513 | 6,616 | 0
Valuation and transaction loss (gain) on derivative instruments, net | (403,765) | (300,500) | 1,043,628
Share in loss (profit) of associates and joint ventures, net | (166,820) | (363,101) | 81,688
Gain on disposal of financial assets | (3,866) | (1,838) | (1,130)
Gain on disposal of property plant, and equipment | (43,784) | (98,077) | (48,316)
Gain on disposal of intangible assets | (206) | (12) | (564)
Gain on disposal of investments in associates and joint ventures | (70,094) | (5,079) | (609)
Loss on disposal of investments in associates and joint ventures | 2 | 2,183 | 0
Impairment loss on investments in associates and joint ventures | 22,517 | 7,907 | 27,238
Gain on disposal of investments in subsidiaries | 0 | (72) | 0
Loss on disposal of investments in subsidiaries | 256 | 0 | 0
Interest income | (268,118) | (223,767) | (206,143)
Dividend income | (13,838) | (12,777) | (11,477)
Impairment loss on available-for-sale financial assets | 0 | 0 | 2,713
Other inflows (outflows) of cash | 128,237 | 81,317 | 16,679
Adjustments for Cash flows from operating activities | 15,769,297 | 13,129,849 | 16,492,940
Changes in: |  |  |
Trade receivables | 95,345 | 246,755 | (218,328)
Non-trade receivables | 64,027 | 154,580 | (31,807)
Accrued income | 83,589 | (484,718) | 577,838
Other receivables | (116,583) | (61,961) | (1,271)
Other current assets | (271,986) | (148,509) | 37,576
Inventories | (980,216) | (1,771,550) | (1,373,438)
Other non-current assets | (611,066) | (54,148) | (46,079)
Trade payables | (546,159) | 478,744 | 342,126
Non-trade payables | 192,506 | (292,912) | (214,704)
Accrued expenses | (454,501) | (361,204) | (715,305)
Other payables | 0 | 0 | 292
Other current liabilities | 373,403 | 250,112 | (126,323)
Other non-current liabilities | 650,468 | 287,488 | 763,958
Investments in associates and joint ventures (dividends received) | 215,612 | 175,175 | 106,983
Provisions | (1,473,461) | (1,132,969) | (1,390,606)
Payments of employee benefit obligations | (65,242) | (89,253) | (69,489)
Plan assets | (348,386) | (330,064) | (325,080)
Changes in assets and liabilities Cash flows from operating activities | (3,192,650) | (3,134,434) | (2,683,657)
Cash generated from operating activities | 10,313,112 | 8,820,917 | 15,250,677
Dividends received (available-for-sale financial assets) | 24,255 | 11,182 | 10,590
Interest paid | (2,027,850) | (1,895,898) | (1,886,303)
Interest received | 186,122 | 194,221 | 173,226
Income taxes paid | (282,211) | (450,290) | (2,298,296)
Net cash flows from operating activities | 8,213,428 | 6,680,132 | 11,249,894
Cash flows provided by investing activities |  |  |
Proceeds from disposals of investments in associates and joint ventures | 0 | 1,617 | 10,542
Acquisition of investments in associates and joint ventures | (107,821) | (319,425) | (206,753)
Proceeds from sales of property, plant and equipment | 522,742 | 234,138 | 85,801
Acquisition of property, plant and equipment | (14,000,359) | (12,266,870) | (12,535,958)
Proceeds from sales of intangible assets | 7,702 | 13 | 1,072
Acquisition of intangible assets | (229,426) | (110,587) | (143,887)
Proceeds from disposals of financial assets | 2,783,474 | 2,419,259 | 5,296,680
Acquisition of financial assets | (2,165,342) | (2,841,651) | (4,786,717)
Increase in loans | (335,773) | (188,675) | (218,698)
Collection of loans | 292,745 | 100,010 | 120,967
Increase in deposits | (280,637) | (299,564) | (397,078)
Decrease in deposits | 275,314 | 259,930 | 110,383
Proceeds from disposals of assets held-for-sale | 30,662 | 18,716 | 0
Receipt of government grants | 21,705 | 30,416 | 55,533
Cash outflow from merger | (154,311) | 0 | 0
Net cash inflow (outflow) from changes in consolidation scope | (2,917) | 2,141 | 0
Other cash inflow (outflow) from investing activities, net | (157,116) | (53,769) | 1,414
Net cash flows used in investing activities | (13,499,358) | (13,014,301) | (12,606,699)
Cash flows provided by financing activities |  |  |
Proceeds from (Repayment of) short-term borrowings, Net | 188,957 | (183,660) | 370,328
Proceeds from long-term borrowings and debt securities | 13,221,407 | 14,251,586 | 10,098,067
Repayment of long-term borrowings and debt securities | (7,068,290) | (8,095,590) | (8,198,882)
Payment of lease liabilities | (573,437) | (134,454) | (122,919)
Settlement of derivative instruments, net | 102,146 | 60,907 | 33,434
Change in non-controlling interests | 17,365 | 20,113 | 23,582
Repayment of hybrid bond | 0 | 0 | (99,750)
Dividends paid (hybrid bond) | (13,385) | (17,658) | (15,856)
Dividends paid | (99,356) | (599,391) | (1,340,387)
Other cash outflow from financing activities, net | 0 | (175) | (2,023)
Net cash from financing activities | 5,775,407 | 5,301,678 | 745,594
Net increase (decrease) in cash and cash equivalents before effect of exchange rate fluctuations | 489,477 | (1,032,491) | (611,211)
Effect of exchange rate fluctuations on cash held | (37,693) | 21,097 | (70,403)
Net increase (decrease) in cash and cash equivalents | 451,784 | (1,011,394) | (681,614)
Cash and cash equivalents at January 1 | 1,358,345 | 2,369,739 | 3,051,353
Cash and cash equivalents at December 31 | ₩ 1,810,129 | ₩ 1,358,345 | ₩ 2,369,739

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- Definition Adjustments for decrease (increase) in inventories to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Inventories; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_20_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Adjustments for decrease (increase) in other current assets to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Other current assets; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_20&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Adjustments for depreciation expense to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_20&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Adjustments for impairment loss (reversal of impairment loss) on property, plant and equipment recognised in profit or loss to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_20&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Adjustments for impairment loss (reversal of impairment loss) on trade and other receivables recognised in profit or loss to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Trade and other receivables; Impairment loss; Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss; Impairment loss (reversal of impairment loss) recognised in profit or loss] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_20&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Adjustments for income tax expense to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 35 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_35&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Adjustments for interest expense to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Interest expense; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_20&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_i&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258 + Details
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- Definition The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in the amount due from borrowers for interest payments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition Amount of increase (decrease) in accrued expenses, and obligations classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period of all assets and liabilities used in operating activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition Amount of increase (decrease) in noncurrent assets classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition Amount of increase (decrease) in noncurrent operating liabilities classified as other. + References No definition available. + Details
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- Definition Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition Amount of noncash expense (reversal of expense) for pension benefits. Excludes other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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- Definition Amount of cash inflow (outflow) from (to) a noncontrolling interest. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
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- Definition The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
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- Definition The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow for debt, mandatory redeemable security, and principal payment for finance lease obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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