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Changes in Liabilities Arising from Financing Activities - Summary of Changes in Liabilities Arising from Financial Activities (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning | ₩ 8,471,738 | ₩ 6,847,376
Cash flows | (259,601) | 112,632
Changes in Accounting Policy |  | 771,410
Newly acquired | 507,472 | 774,906
Exchange difference | (12,607) | 6,435
Fair value change | (27,085) | (31,456)
Change in Consolidation Scope | 3,564 |
Other changes | (100,576) | (9,565)
Ending | 8,582,905 | 8,471,738
Borrowings [member] |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning | 7,298,867 | 6,648,294
Cash flows | 167,867 | 574,175
Newly acquired | 17,523 |
Exchange difference | (157,985) | 64,398
Other changes | (9,974) | 12,000
Ending | 7,316,298 | 7,298,867
Financial lease liabilities [member] |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning | 1,211,351 | 163,858
Cash flows | (447,784) | (485,444)
Changes in Accounting Policy |  | 771,410
Newly acquired | 473,477 | 774,906
Exchange difference | (3) |
Fair value change | 40 |
Change in Consolidation Scope | 3,564 |
Other changes | (97,005) | (13,379)
Ending | 1,143,640 | 1,211,351
Lease liabilities [member] |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Cash flows | (13,674) |
Newly acquired | 13,674 |
Derivative assets [member] |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning | (58,576) | (29,843)
Cash flows | 34,933 | 33,635
Exchange difference | 2,870 | (53,729)
Fair value change | (3,456) | (11,398)
Other changes | 16,623 | 2,759
Ending | (7,606) | (58,576)
Derivative liabilities [member] |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning | 20,096 | 65,067
Cash flows | (943) | (9,734)
Newly acquired | 2,798 |
Exchange difference | 142,511 | (4,234)
Fair value change | (23,669) | (20,058)
Other changes | (10,220) | (10,945)
Ending | ₩ 130,573 | ₩ 20,096

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- Definition The increase (decrease) in liabilities arising from financing activities. [Refer: Liabilities arising from financing activities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 44B -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_44B&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in liabilities arising from financing activities resulting from the effect of changes in foreign exchange rates. [Refer: Liabilities arising from financing activities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 44B -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_44B_c&doctype=Standard -URIDate 2020-01-01 + Details
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