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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, 2019 | Dec. 31, 2018
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning | ₩ 6,847,376 | ₩ 6,951,971
Cash flows | 112,632 | (217,061)
Changes in Accounting Policy | 807,233 |
Newly acquired | 256,871 | 61,187
Exchange difference | 6,435 | 10,277
Fair value change | (31,456) | 32,390
Scope changes |  | 15,000
Other changes | (9,565) | (6,388)
Ending | 7,989,526 | 6,847,376
Borrowings [member] |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning | 6,648,294 | 6,683,662
Cash flows | 574,175 | (139,715)
Exchange difference | 64,398 | 70,095
Scope changes |  | 15,000
Other changes | 12,000 | 19,252
Ending | 7,298,867 | 6,648,294
Financial lease liabilities [member] |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning | 163,858 | 176,878
Cash flows | (485,444) | (73,885)
Changes in Accounting Policy | 807,233 |
Newly acquired | 256,871 | 61,187
Other changes | (13,379) | (322)
Ending | 729,139 | 163,858
Derivative assets [member] |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning | (29,843) | (7,389)
Cash flows | 33,635 | 11,126
Exchange difference | (53,729) | (22,474)
Fair value change | (11,398) | (3,419)
Other changes | 2,759 | (7,687)
Ending | (58,576) | (29,843)
Derivative liabilities [member] |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning | 65,067 | 98,820
Cash flows | (9,734) | (14,587)
Exchange difference | (4,234) | (37,344)
Fair value change | (20,058) | 35,809
Other changes | (10,945) | (17,631)
Ending | ₩ 20,096 | ₩ 65,067

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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 2019-01-01 -Paragraph 44B -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_44B&doctype=Standard -URIDate 2019-03-27 + 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 2019-01-01 -Paragraph 44B -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_44B_c&doctype=Standard -URIDate 2019-03-27 + Details
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