XML 199 R187.htm IDEA: XBRL DOCUMENT
v3.19.1

Deferred Income Tax and Income Tax Expense - Summary of Movement in Deferred Income Tax Assets and Liabilities (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | ₩ 583,760 | ₩ 563,729 |
Changes in accounting policy | (374,307) |  |
Statement of operations | 15,016 | (1,771) | ₩ (152,102)
Other comprehensive income | 36,115 | 21,802 |
Ending | 260,584 | 583,760 | 563,729
Deferred tax derivative liabilities [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | (30,520) | (49,188) |
Changes in accounting policy | 30,520 |  |
Statement of operations |  | 49,188 |
Ending |  | (30,520) | (49,188)
Deferred tax liabilities available for sale financial assets [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | (30,520) | (31,702) |
Statement of operations |  | (164) |
Other comprehensive income |  | 1,346 |
Ending |  | (30,520) | (31,702)
Deferred tax liabilities investment in subsidiaries associates and joint ventures [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | (96,650) | (50,746) |
Statement of operations | 2,867 | (42,659) |
Other comprehensive income | 179 | (3,245) |
Ending | (93,604) | (96,650) | (50,746)
Deferred tax liabilities depreciation [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning |  | (39,498) |
Statement of operations | (424) | 39,498 |
Ending | (424) |  | (39,498)
Deferred tax liabilities advanced depreciation provision [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | (248,592) | (225,687) |
Statement of operations | (64,592) | (22,905) |
Ending | (313,184) | (248,592) | (225,687)
Deferred tax liabilities deposits for severance benefits [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | (387,856) | (307,730) |
Statement of operations | (11,126) | (80,126) |
Ending | (398,982) | (387,856) | (307,730)
Deferred tax liabilities accrued income [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | (2,150) | (2,024) |
Statement of operations | 592 | (126) |
Ending | (1,558) | (2,150) | (2,024)
Deferred tax liabilities reserve for technology and human resource development [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | (314) | (747) |
Statement of operations | 110 | 433 |
Ending | (204) | (314) | (747)
Other deferred tax liabilities [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | (108,749) | (119,366) |
Statement of operations | (175,506) | 10,617 |
Ending | (284,255) | (108,749) | (119,366)
Deferred tax liabilities prepaid expenses [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Changes in accounting policy | (352,139) |  |
Statement of operations | (17,777) |  |
Ending | (369,916) |  |
Deferred tax derivative assets [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 24,724 |  |
Statement of operations | (26,128) | 34,572 |
Other comprehensive income | 9,745 | (9,848) |
Ending | 8,341 | 24,724 |
Deferred tax assets provision for impairment or trade receivables [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 121,656 | 110,276 |
Changes in accounting policy | (9,096) |  |
Statement of operations | (12,673) | 11,380 |
Ending | 99,887 | 121,656 | 110,276
Deferred tax assets inventory valuation [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning |  | 48 |
Statement of operations | 121 | (48) |
Ending | 121 |  | 48
Deferred tax assets contribution for construction [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 18,271 | 18,091 |
Statement of operations | (1,471) | 180 |
Ending | 16,800 | 18,271 | 18,091
Deferred tax assets accrued expenses [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 91,039 | 80,356 |
Statement of operations |  | 10,683 |
Ending |  | 91,039 | 80,356
Deferred Tax Assets Provisions [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 24,079 | 20,221 |
Statement of operations | 12,099 | 3,858 |
Ending | 36,178 | 24,079 | 20,221
Deferred tax assets property, plant and equipment [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 232,074 |  |
Statement of operations | (1,796) |  |
Ending | 230,278 | 232,074 |
Deferred Tax assets assets retirement obligation [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 20,836 | 18,086 |
Statement of operations | 3,696 | 2,750 |
Ending | 24,532 | 20,836 | 18,086
Deferred tax assets withholding of facilities expenses [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 7,382 | 6,910 |
Statement of operations | (773) | 472 |
Ending | 6,609 | 7,382 | 6,910
Deferred tax assets accrued payroll expenses [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 15,129 | 25,915 |
Statement of operations |  | (10,786) |
Ending |  | 15,129 | 25,915
Deferred tax assets deduction of installment receivables [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning |  | 13,887 |
Statement of operations | 42 | (13,887) |
Ending | 42 |  | 13,887
Deferred tax assets property and equipment [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 232,074 | 232,915 |
Statement of operations |  | (841) |
Ending |  | 232,074 | 232,915
Deferred tax assets gain or loss foreign currency translation [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 143 | 67,701 |
Statement of operations | 10,529 | (67,558) |
Ending | 10,672 | 143 | 67,701
Deferred tax assets deferred revenue [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 26,334 | 26,113 |
Changes in accounting policy | 15,809 |  |
Statement of operations | (2,502) | 221 |
Ending | 39,641 | 26,334 | 26,113
Deferred tax assets real-estate sales [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 8,698 | 3,851 |
Changes in accounting policy | 661 |  |
Statement of operations | 12,369 | 4,847 |
Ending | 21,728 | 8,698 | 3,851
Deferred tax assets tax loss carryforward [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 2,699 |  |
Statement of operations | 1,364 | 2,699 |
Ending | 4,063 | 2,699 |
Other deferred tax assets [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 247,702 | 193,956 |
Changes in accounting policy | 154 |  |
Statement of operations | 284,742 | 47,003 |
Other comprehensive income | (1,049) | 6,743 |
Ending | 531,549 | 247,702 | 193,956
Deferred tax assets [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 1,458,591 | 1,390,417 |
Changes in accounting policy | 10,418 |  |
Statement of operations | 304,035 | 44,473 |
Other comprehensive income | 51,509 | 23,701 |
Ending | 1,673,777 | 1,458,591 | 1,390,417
Deferred tax assets defined benefit liabilities [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 467,049 | 372,492 |
Statement of operations | 3,980 | 67,751 |
Other comprehensive income | 42,813 | 26,806 |
Ending | 513,842 | 467,049 | 372,492
Deferred tax assets tax credit carry forwards [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 150,776 | 199,599 |
Statement of operations | (47,878) | (48,823) |
Ending | 102,898 | 150,776 | 199,599
Deferred tax liabilities contract assets [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Changes in accounting policy | (23,663) |  |
Statement of operations | 12,158 |  |
Ending | (11,505) |  |
Deferred tax liabilities financial assets at fair value through profit or loss [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Changes in accounting policy | (30,856) |  |
Statement of operations | 30,195 |  |
Ending | (661) |  |
Deferred tax liabilities Financial assets at fair value through other comprehensive income [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Changes in accounting policy | (8,587) |  |
Statement of operations | (17,638) |  |
Other comprehensive income | (15,573) |  |
Ending | (41,798) |  |
Deferred tax assets unsettled expenses [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 106,168 |  |
Statement of operations | 21,729 |  |
Ending | 127,897 | 106,168 |
Deferred tax assets trade receivables [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Changes in accounting policy | 2,890 |  |
Statement of operations | (1,293) |  |
Ending | 1,597 |  |
Temporary differences [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | 432,984 |  |
Changes in accounting policy | (374,307) |  |
Statement of operations | 62,894 |  |
Other comprehensive income | 36,115 |  |
Ending | 157,686 | 432,984 |
Deferred tax liabilities [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] |  |  |
Beginning | (874,831) | (826,688) |
Changes in accounting policy | (384,725) |  |
Statement of operations | (241,141) | (46,244) |
Other comprehensive income | (15,394) | (1,899) |
Ending | ₩ (1,516,091) | ₩ (874,831) | ₩ (826,688)

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