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Consolidated Statements Of Cash Flows - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Cash flows provided by operating activities |  |  |
Profit (loss) for the period | ₩ 2,092,469 | ₩ (2,263,535) | ₩ (1,174,498)
Adjustments for: |  |  |
Income Tax expense (benefit) | 899,064 | (1,002,303) | (826,321)
Depreciation | 11,377,553 | 10,971,825 | 9,905,856
Amortization | 170,466 | 156,915 | 118,938
Employee benefit expense | 492,288 | 725,120 | 360,575
Bad debt expense | 50,686 | 16,629 | 57,468
Interest expense | 1,995,425 | 2,046,811 | 1,868,458
Loss on sale of financial assets | 648 | 2,106 | 1
Loss on disposals of property, plant and equipment | 162,725 | 72,508 | 60,704
Loss on abandonment of property, plant, and equipment | 255,346 | 364,233 | 481,176
Impairment loss on property, plant and equipment | 80,413 | 50,034 | 710,162
Impairment loss on intangible assets | 3,599 | 513,609 | 8,112
Loss on disposal of intangible assets | 392 | 827 | 43
Increase to provisions | 1,832,765 | 2,301,215 | 1,056,994
Loss (gain) on foreign currency translation, net | (782,167) | 370,309 | 243,378
Gain on valuation of financial assets at fair value through profit or loss | (12,904) | (5,575) | (8,495)
Loss on valuation of financial assets at fair value through profit or loss | 7,396 | 4,513 | 6,616
Valuation and transaction loss (gain) on derivative instruments, net | 390,322 | (403,765) | (300,500)
Share in loss (profit) of associates and joint ventures, net | (279,124) | (166,820) | (363,101)
Gain on disposal of financial assets | (11,992) | (3,866) | (1,838)
Gain on disposal of property plant, and equipment | (93,195) | (43,784) | (98,077)
Gain on disposal of intangible assets | (1,556) | (206) | (12)
Gain on disposal of investments in associates and joint ventures | (10,165) | (70,094) | (5,079)
Loss on disposal of investments in associates and joint ventures | 16 | 2 | 2,183
Impairment loss on investments in associates and joint ventures | 1,556 | 22,517 | 7,907
Gain on disposal of investments in subsidiaries | 0 | 0 | (72)
Loss on disposal of investments in subsidiaries | 6,610 | 256 | 0
Interest income | (242,586) | (268,118) | (223,767)
Dividend income | (7,316) | (13,838) | (12,777)
Other inflows (outflows) of cash | 30,411 | 128,237 | 81,317
Adjustments for Cash flows from operating activities | 16,316,676 | 15,769,297 | 13,129,849
Changes in: |  |  |
Trade receivables | (107,639) | 95,345 | 246,755
Non-trade receivables | 459,524 | 64,027 | 154,580
Accrued income | (258,963) | 83,589 | (484,718)
Other receivables | (32,536) | (116,583) | (61,961)
Other current assets | (462,125) | (271,986) | (148,509)
Inventories | (723,495) | (980,216) | (1,771,550)
Other non-current assets | (140,017) | (611,066) | (54,148)
Trade payables | (262,985) | (546,159) | 478,744
Non-trade payables | (363,260) | 192,506 | (292,912)
Accrued expenses | (222,113) | (454,501) | (361,204)
Other current liabilities | 388,163 | 373,403 | 250,112
Other non-current liabilities | 755,005 | 650,468 | 287,488
Investments in associates and joint ventures (dividends received) | 237,695 | 215,612 | 175,175
Provisions | (1,499,436) | (1,473,461) | (1,132,969)
Payments of employee benefit obligations | (74,848) | (65,242) | (89,253)
Plan assets | (582,275) | (348,386) | (330,064)
Changes in assets and liabilities Cash flows from operating activities | (2,889,305) | (3,192,650) | (3,134,434)
Cash generated from operating activities | 15,519,840 | 10,313,112 | 8,820,917
Dividends received (financial assets at fair value through other comprehensive income) | 7,316 | 24,255 | 11,182
Interest paid | (2,081,663) | (2,027,850) | (1,895,898)
Interest received | 215,183 | 186,122 | 194,221
Income taxes paid | (452,203) | (282,211) | (450,290)
Net cash flows from operating activities | 13,208,473 | 8,213,428 | 6,680,132
Cash flows provided by investing activities |  |  |
Proceeds from disposals of investments in associates and joint ventures | 5,444 | 0 | 1,617
Acquisition of investments in associates and joint ventures | (342,116) | (107,821) | (319,425)
Proceeds from sales of property, plant and equipment | 331,777 | 522,742 | 234,138
Acquisition of property, plant and equipment | (13,281,294) | (14,000,359) | (12,266,870)
Proceeds from sales of intangible assets | 10,871 | 7,702 | 13
Acquisition of intangible assets | (120,371) | (229,426) | (110,587)
Proceeds from disposals of financial assets | 8,020,406 | 2,783,474 | 2,419,259
Acquisition of financial assets | (9,203,450) | (2,165,342) | (2,841,651)
Increase in loans | (336,744) | (335,773) | (188,675)
Collection of loans | 215,292 | 292,745 | 100,010
Increase in deposits | (276,255) | (280,637) | (299,564)
Decrease in deposits | 280,941 | 275,314 | 259,930
Proceeds from disposals of assets held-for-sale | 32,578 | 30,662 | 18,716
Receipt of government grants | 41,209 | 21,705 | 30,416
Cash outflow from merger | 0 | (154,311) | 0
Net cash inflow (outflow) from changes in consolidation scope | (24,624) | (2,917) | 2,141
Other cash inflow (outflow) from investing activities, net | (185,475) | (157,116) | (53,769)
Net cash flows used in investing activities | (14,831,811) | (13,499,358) | (13,014,301)
Cash flows provided by financing activities |  |  |
Proceeds from (Repayment of) short-term borrowings, Net | 345,338 | 188,957 | (183,660)
Proceeds from long-term borrowings and debt securities | 10,170,107 | 13,221,407 | 14,251,586
Repayment of long-term borrowings and debt securities | (7,976,658) | (7,068,290) | (8,095,590)
Payment of lease liabilities | (613,977) | (573,437) | (134,454)
Settlement of derivative instruments, net | 42,263 | 102,146 | 60,907
Change in non-controlling interests | 11,554 | 17,365 | 20,113
Dividends paid (hybrid bond) | (13,385) | (13,385) | (17,658)
Dividends paid | (81,298) | (99,356) | (599,391)
Other cash outflow from financing activities, net | (3,120) | 0 | (175)
Net cash from financing activities | 1,880,824 | 5,775,407 | 5,301,678
Net increase (decrease) in cash and cash equivalents before effect of exchange rate fluctuations | 257,486 | 489,477 | (1,032,491)
Effect of exchange rate fluctuations on cash held | (38,031) | (37,693) | 21,097
Net increase (decrease) in cash and cash equivalents | 219,455 | 451,784 | (1,011,394)
Cash and cash equivalents at January 1 | 1,810,129 | 1,358,345 | 2,369,739
Cash and cash equivalents at December 31 | ₩ 2,029,584 | ₩ 1,810,129 | ₩ 1,358,345

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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 2020-01-01 -Paragraph 20 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20_a&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Adjustments for decrease (increase) in other operating receivables 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 2020-01-01 -Paragraph 20 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20_a&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 35 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_35&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Adjustments for provisions to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Provisions; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 20 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20_b&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_i&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The cash flows from (used in) investing activities, which are the acquisition and disposal of long-term assets and other investments not included in cash equivalents. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 10 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_10&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 50 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_50_d&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The cash flows from (used in) operating activities, which are the principal revenue-producing activities of the entity and other activities that are not investing or financing activities. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 10 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_10&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 50 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_50_d&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The aggregate cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 39 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_39&doctype=Standard -URIDate 2020-01-01 + 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 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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