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Intangible Assets other than Goodwill - Summary of Intangible Asset Explanatory and Changes in intangible assets (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | ₩ 1,044,077 |  |
Changes in intangible assets other than goodwill |  |  |
Reversal | 0 | ₩ (14) | ₩ 0
Impairment | (164) | 0 | (3,599)
Ending balance | 956,664 | 1,044,077 |
Intangible assets other than goodwill |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 1,044,077 | 1,055,730 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 126,295 | 152,639 |
Disposal | (354) | (132) |
Amortization | (156,160) | (166,161) |
Reversal |  | 14 |
Impairment | (164) |  |
Others | (57,030) | 1,987 |
Ending balance | 956,664 | 1,044,077 | 1,055,730
Intangible assets other than goodwill | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 3,940,927 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 3,963,439 | 3,940,927 |
Intangible assets other than goodwill | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (2,310,088) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (2,429,624) | (2,310,088) |
Intangible assets other than goodwill | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (575,454) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (571,325) | (575,454) |
Intangible assets other than goodwill | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (11,308) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (5,826) | (11,308) |
Software |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 162,505 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 202,833 | 162,505 |
Software | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 162,596 | 152,163 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 22,532 | 18,834 |
Disposal | (57) | (1) |
Amortization | (84,649) | (77,881) |
Reversal |  | 0 |
Impairment | 0 |  |
Others | 102,585 | 69,481 |
Ending balance | 203,007 | 162,596 | 152,163
Software | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 867,185 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 1,002,040 | 867,185 |
Software | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (704,589) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (799,013) | (704,589) |
Software | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (20) | 0 |
Software | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (91) | (136) |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | 60 | 64 |
Reversal |  | 0 |
Impairment | 0 |  |
Others | (143) | (19) |
Ending balance | (174) | (91) | (136)
Copyrights, patents rights and other industrial rights |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 35,187 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 28,013 | 35,187 |
Copyrights, patents rights and other industrial rights | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 35,187 | 42,916 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 270 | 166 |
Disposal | (37) | (131) |
Amortization | (7,136) | (7,771) |
Reversal |  | 0 |
Impairment | 0 |  |
Others | (271) | 7 |
Ending balance | 28,013 | 35,187 | 42,916
Copyrights, patents rights and other industrial rights | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 103,428 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 104,559 | 103,428 |
Copyrights, patents rights and other industrial rights | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (59,063) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (67,368) | (59,063) |
Copyrights, patents rights and other industrial rights | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (9,178) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (9,178) | (9,178) |
Copyrights, patents rights and other industrial rights | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Mining rights |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 41,902 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 38,525 | 41,902 |
Mining rights | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 41,902 | 42,390 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 2,395 | 1,022 |
Disposal | 0 | 0 |
Amortization | (4,296) | (3,526) |
Reversal |  | 0 |
Impairment | 0 |  |
Others | (1,476) | 2,016 |
Ending balance | 38,525 | 41,902 | 42,390
Mining rights | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 623,122 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 625,845 | 623,122 |
Mining rights | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (39,803) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (46,187) | (39,803) |
Mining rights | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (541,417) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (541,133) | (541,417) |
Mining rights | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Development expenditures |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 69,124 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 51,028 | 69,124 |
Development expenditures | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 72,944 | 95,166 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 309 |
Disposal | 0 | 0 |
Amortization | (24,238) | (37,033) |
Reversal |  | 0 |
Impairment | 0 |  |
Others | 5,799 | 14,502 |
Ending balance | 54,505 | 72,944 | 95,166
Development expenditures | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 978,768 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 938,032 | 978,768 |
Development expenditures | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (905,805) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (883,527) | (905,805) |
Development expenditures | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (19) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | (19) |
Development expenditures | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (3,820) | (5,043) |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | 1,466 | 1,439 |
Reversal |  | 0 |
Impairment | 0 |  |
Others | (1,123) | (216) |
Ending balance | (3,477) | (3,820) | (5,043)
Intangible assets under development |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 74,104 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 65,614 | 74,104 |
Intangible assets under development | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 81,430 | 67,018 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 39,559 | 51,988 |
Disposal | 0 | 0 |
Amortization | 0 | 0 |
Reversal |  | 0 |
Impairment | (14) |  |
Others | (53,253) | (37,576) |
Ending balance | 67,722 | 81,430 | 67,018
Intangible assets under development | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 94,275 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 76,625 | 94,275 |
Intangible assets under development | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Intangible assets under development | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (12,845) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (8,903) | (12,845) |
Intangible assets under development | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (7,326) | (7,203) |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | 0 | 0 |
Reversal |  | 0 |
Impairment | 0 |  |
Others | 5,218 | (123) |
Ending balance | (2,108) | (7,326) | (7,203)
Usage rights of donated assets and other |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 169,783 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 157,143 | 169,783 |
Usage rights of donated assets and other | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 169,783 | 184,475 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | (11,394) | (13,594) |
Reversal |  | 0 |
Impairment | (150) |  |
Others | (1,096) | (1,098) |
Ending balance | 157,143 | 169,783 | 184,475
Usage rights of donated assets and other | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 592,870 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 592,797 | 592,870 |
Usage rights of donated assets and other | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (423,087) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (435,518) | (423,087) |
Usage rights of donated assets and other | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (136) | 0 |
Usage rights of donated assets and other | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Leasehold rights |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 5,848 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 4,888 | 5,848 |
Leasehold rights | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 5,848 | 6,340 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | (960) | (834) |
Reversal |  | 0 |
Impairment | 0 |  |
Others | 0 | 342 |
Ending balance | 4,888 | 5,848 | 6,340
Leasehold rights | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 28,185 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 28,185 | 28,185 |
Leasehold rights | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (22,337) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (23,297) | (22,337) |
Leasehold rights | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Leasehold rights | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Greenhouse gas emissions rights |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 78,137 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 43,960 | 78,137 |
Greenhouse gas emissions rights | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 78,137 | 61,373 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 57,466 | 78,091 |
Disposal | 0 | 0 |
Amortization | 0 | (31) |
Reversal |  | 0 |
Impairment | 0 |  |
Others | (91,643) | (61,296) |
Ending balance | 43,960 | 78,137 | 61,373
Greenhouse gas emissions rights | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 78,137 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 43,960 | 78,137 |
Greenhouse gas emissions rights | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Greenhouse gas emissions rights | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Greenhouse gas emissions rights | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Others |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 407,487 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 364,660 | 407,487 |
Others | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 407,558 | 416,346 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 4,073 | 2,229 |
Disposal | (260) | 0 |
Amortization | (25,017) | (26,998) |
Reversal |  | 14 |
Impairment | 0 |  |
Others | (21,627) | 15,967 |
Ending balance | 364,727 | 407,558 | 416,346
Others | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 574,957 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 551,396 | 574,957 |
Others | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (155,404) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (174,714) | (155,404) |
Others | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (11,995) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (11,955) | (11,995) |
Others | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (71) | (75) |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | 4 | 4 |
Reversal |  | 0 |
Impairment | 0 |  |
Others | 0 | 0 |
Ending balance | ₩ (67) | ₩ (71) | ₩ (75)

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