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GOODWILL (Tables) | 12 Months Ended
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Dec. 31, 2022
GOODWILL. |
Summary of changes in goodwill | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Accumulated |  | Goodwill after
​ | ​ | Goodwill | ​ | impairment losses | ​ | Impairment losses
Balance as of January 1, 2020 |  | 17,445,205 |  | (7,975,894) |  | 9,469,311
(+/-) Foreign exchange effect |  | 4,976,383 |  | (2,342,175) |  | 2,634,208
Balance as of December 31, 2020 |  | 22,421,588 |  | (10,318,069) |  | 12,103,519
(+/-) Foreign exchange effect |  | 1,469,190 |  | (595,284) |  | 873,906
Results in operations with subsidiary and joint ventures (note 3.4) | ​ | (549,898) | ​ | — | ​ | (549,898)
Balance as of December 31, 2021 |  | 23,340,880 |  | (10,913,353) |  | 12,427,527
(+/-) Foreign exchange effect |  | (1,595,333) |  | 802,270 |  | (793,063)
Balance as of December 31, 2022 |  | 21,195,649 |  | (10,111,083) |  | 11,634,464
​
Schedule of goodwill by segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2022 |  | 2021 |  | 2020
Brazil |  | 373,135 |  | 373,135 |  | 373,135
Special Steel |  | 3,844,314 |  | 4,111,619 |  | 3,828,841
North America |  | 7,417,015 |  | 7,942,773 |  | 7,901,543
​ |  | 11,634,464 |  | 12,427,527 |  | 12,103,519

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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 2022-03-24 -Paragraph B67 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2022-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B -URIDate 2022-03-24 + Details
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