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GOODWILL (Tables) | 12 Months Ended
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Dec. 31, 2018
GOODWILL |
Summary of changes in goodwill |
|  |  |  | Accumulated |  | Goodwill after
|  | Goodwill |  | impairment losses |  | Impairment losses
Balance as of January 1, 2016 |  | 18,099,186 |  | (2,974,756) |  | 15,124,430
(+/-) Foreign exchange effect |  | (2,645,368) |  | 63,516 |  | (2,581,852)
(-) Impairment |  | — |  | (2,678,582) |  | (2,678,582)
(-) Effect of selling of subsidiary |  | (393,980) |  | — |  | (393,980)
Balance as of December 31, 2016 |  | 15,059,838 |  | (5,589,822) |  | 9,470,016
(+/-) Foreign exchange effect |  | 242,510 |  | (169,979) |  | 72,531
(-) Impairment |  | — |  | (849,438) |  | (849,438)
(-) Transfer to assets held for sale |  | (801,967) |  | — |  | (801,967)
Balance as of December 31, 2017 |  | 14,500,381 |  | (6,609,239) |  | 7,891,142
(+/-) Foreign exchange effect |  | 2,283,577 |  | (1,062,329) |  | 1,221,248
Balance as of December 31, 2018 |  | 16,783,958 |  | (7,671,568) |  | 9,112,390
Schedule of goodwill by segment |
|  | 2018 |  | 2017 |  | 2016
Brazil |  | 373,135 |  | 373,135 |  | 380,644
Special Steel |  | 2,854,888 |  | 2,487,364 |  | 2,508,056
North America |  | 5,884,367 |  | 5,030,643 |  | 6,581,316
|  | 9,112,390 |  | 7,891,142 |  | 9,470,016

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- Definition The disclosure of the reconciliation of changes in goodwill. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2018-01-01 -Paragraph B67 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B67_d&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
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