The changes in carrying amount of goodwill and other intangible assets for the years ended December 31, 2016 and 2017 were as follows:
1) For the year ended December 31, 2016
| Beginning | Acquisitions | Disposals | Amortization | Impairment loss |
Others (*2) | Ending | ||||||||||||||||||||||
| (in millions of Won) | ||||||||||||||||||||||||||||
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Goodwill |
￦ | 1,461,954 | — | — | — | (95,984 | ) | 9,161 | 1,375,131 | |||||||||||||||||||
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Intellectual property rights |
2,667,086 | 56,849 | (753 | ) | (204,112 | ) | (16,786 | ) | 18,887 | 2,521,171 | ||||||||||||||||||
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Premium in rental (*1) |
127,949 | 1,964 | (7,526 | ) | (243 | ) | (1,559 | ) | (1,546 | ) | 119,039 | |||||||||||||||||
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Development expense |
135,796 | 4,027 | (60 | ) | (61,732 | ) | (298 | ) | 39,279 | 117,012 | ||||||||||||||||||
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Port facilities usage rights |
264,801 | — | — | (15,217 | ) | — | 7,033 | 256,617 | ||||||||||||||||||||
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Exploration and evaluation assets |
151,144 | 45,524 | — | — | (3,290 | ) | (31,110 | ) | 162,268 | |||||||||||||||||||
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Customer relationships |
559,809 | — | — | (47,790 | ) | — | 2,226 | 514,245 | ||||||||||||||||||||
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Power generation permit |
539,405 | — | — | — | — | — | 539,405 | |||||||||||||||||||||
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Other intangible assets |
497,810 | 52,350 | (1,454 | ) | (48,910 | ) | (7,353 | ) | (8,602 | ) | 483,841 | |||||||||||||||||
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| ￦ | 6,405,754 | 160,714 | (9,793 | ) | (378,004 | ) | (125,270 | ) | 35,328 | 6,088,729 | ||||||||||||||||||
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| (*1) | Premium in rental includes memberships with indefinite useful lives. |
| (*2) | Represents assets transferred from construction-in-progress to intangible assets and assets transferred from property, plant and equipment, adjustments of foreign currency translation difference and others. |
2) For the year ended December 31, 2017
| Beginning | Acquisitions | Business combination |
Disposals | Amortization | Impairment loss |
Others (*2) | Ending | |||||||||||||||||||||||||
| (in millions of Won) | ||||||||||||||||||||||||||||||||
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Goodwill |
￦ | 1,375,131 | — | — | — | — | (21,750 | ) | (3,543 | ) | 1,349,838 | |||||||||||||||||||||
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Intellectual property rights |
2,521,171 | 167,580 | 47,625 | (450 | ) | (217,932 | ) | (74,524 | ) | 5,723 | 2,449,193 | |||||||||||||||||||||
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Premium in rental (*1) |
119,039 | 6,006 | — | (3,666 | ) | (611 | ) | (1,661 | ) | (797 | ) | 118,310 | ||||||||||||||||||||
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Development expense |
117,012 | 3,479 | — | (1,179 | ) | (66,847 | ) | (694 | ) | 28,447 | 80,218 | |||||||||||||||||||||
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Port facilities usage rights |
256,617 | — | — | — | (19,912 | ) | — | 72,668 | 309,373 | |||||||||||||||||||||||
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Exploration and evaluation assets |
162,268 | 91,548 | — | — | — | (56,519 | ) | 8,647 | 205,944 | |||||||||||||||||||||||
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Customer relationships |
514,245 | — | — | — | (46,508 | ) | — | (792 | ) | 466,945 | ||||||||||||||||||||||
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Power generation permit |
539,405 | — | — | — | — | — | — | 539,405 | ||||||||||||||||||||||||
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Other intangible assets |
483,841 | 84,502 | — | (1,641 | ) | (57,964 | ) | (11,829 | ) | (63,866 | ) | 433,043 | ||||||||||||||||||||
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| ￦ | 6,088,729 | 353,115 | 47,625 | (6,936 | ) | (409,774 | ) | (166,977 | ) | 46,487 | 5,952,269 | |||||||||||||||||||||
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| (*1) | Premium in rental includes memberships with indefinite useful lives. |
| (*2) | Represents assets transferred from construction-in-progress to intangible assets and assets transferred from property, plant and equipment, adjustments of foreign currency translation difference and others. |