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Property, Plant and Equipment - Summary of Changes in Property, Plant and Equipment (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | ₩ 14,312,111 | ₩ 14,478,914
Acquisition | 2,631,431 | 2,695,147
Disposal, Abandonment and termination | (196,138) | (126,152)
Depreciation | (2,755,236) | (2,778,204)
Impairment | (9,285) | (46,725)
Transfer in (out) | (310,687) |
Exclusion from scope of consolidation | (945) |
Inclusion in scope of consolidation |  | 832
Transfer from (to) investment properties | (61,472) |
Others | (47,460) | 88,299
Ending, net | 13,562,319 | 14,312,111
Gross carrying amount [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 43,133,769 | 42,220,319
Ending, net | 43,626,804 | 43,133,769
Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | (28,821,658) | (27,741,405)
Ending, net | (30,064,485) | (28,821,658)
Land [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 1,308,952 | 1,287,617
Acquisition | 1,948 | 291
Disposal, Abandonment and termination | (4,656) | (855)
Transfer in (out) | 26,764 | 4,274
Transfer from (to) investment properties | (64,449) |
Others | 98 | 17,625
Ending, net | 1,268,657 | 1,308,952
Land [member] | Gross carrying amount [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 1,309,084 | 1,287,749
Ending, net | 1,268,789 | 1,309,084
Land [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | (132) | (132)
Ending, net | (132) | (132)
Buildings [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 2,124,732 | 2,099,044
Acquisition | 120 | 3,608
Disposal, Abandonment and termination | (4,022) | (1,650)
Depreciation | (135,242) | (135,389)
Transfer in (out) | 25,305 | 136,041
Exclusion from scope of consolidation | (19) |
Transfer from (to) investment properties | 1,793 |
Others | (245) | 23,078
Ending, net | 2,012,422 | 2,124,732
Buildings [member] | Gross carrying amount [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 3,729,228 | 3,558,460
Ending, net | 3,750,861 | 3,729,228
Buildings [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | (1,604,496) | (1,459,416)
Ending, net | (1,738,439) | (1,604,496)
Machinery and equipment1 [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 9,260,185 | 9,508,793
Acquisition | 237,218 | 247,431
Disposal, Abandonment and termination | (176,085) | (112,135)
Depreciation | (2,469,459) | (2,498,837)
Impairment | (9,256) | 361
Transfer in (out) | 2,227,808 | 2,060,936
Exclusion from scope of consolidation | (772) |
Inclusion in scope of consolidation |  | 68
Others | (8,830) | 53,568
Ending, net | 9,060,809 | 9,260,185
Machinery and equipment1 [member] | Gross carrying amount [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 35,106,184 | 34,388,584
Ending, net | 35,971,877 | 35,106,184
Machinery and equipment1 [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | (25,845,999) | (24,879,791)
Ending, net | (26,911,068) | (25,845,999)
Others [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 524,923 | 550,983
Acquisition | 129,464 | 146,471
Disposal, Abandonment and termination | (8,242) | (8,155)
Depreciation | (150,535) | (143,978)
Impairment | (1) | (47,086)
Transfer in (out) | 10,344 | 11,073
Exclusion from scope of consolidation | (120) |
Inclusion in scope of consolidation |  | 764
Transfer from (to) investment properties | 1,184 |
Others | (179) | 14,851
Ending, net | 506,838 | 524,923
Others [member] | Gross carrying amount [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 1,895,332 | 1,951,749
Ending, net | 1,920,571 | 1,895,332
Others [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | (1,370,409) | (1,400,766)
Ending, net | (1,413,733) | (1,370,409)
Construction-in-progress [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 1,093,319 | 1,032,477
Acquisition | 2,262,681 | 2,297,346
Disposal, Abandonment and termination | (3,133) | (3,357)
Impairment | (28) |
Transfer in (out) | (2,600,908) | (2,212,324)
Exclusion from scope of consolidation | (34) |
Transfer from (to) investment properties | 1,184 |
Others | (38,304) | (20,823)
Ending, net | 713,593 | 1,093,319
Construction-in-progress [member] | Gross carrying amount [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | 1,093,941 | 1,033,777
Ending, net | 714,706 | 1,093,941
Construction-in-progress [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning, net | (622) | (1,300)
Ending, net | ₩ (1,113) | ₩ (622)

X
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- Definition The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_vii&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 75 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_75_a&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_a&doctype=Standard -URIDate 2017-03-09 + Details
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