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12. INTANGIBLE ASSETS (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | R$ 7,231,781 | R$ 7,253,175
Effect of foreign exchange differences |  | 158,649 | 7,839
Acquisitions and expeditures |  | 1,837 | 1,427
Transfer to property, plant and equipment |  | 4,633 | 11,896
Amortization (note 26) |  | (79,955) | (58,129)
Goodwill - Acquisition 50% CBSI |  |  | 15,225
Consolidation CBSI on November 30, 2019. |  |  | 348
Others |  | (151) |
Balance at end |  | 7,316,794 | 7,231,781
Cost [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 7,947,578 | 7,903,220
Effect of foreign exchange differences |  |  |
Balance at end |  | 8,263,532 | 7,947,578
Accumulated depreciation [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | (606,467) | (540,715)
Effect of foreign exchange differences |  |  |
Balance at end |  | (837,408) | (606,467)
Adjustment for accumulated recoverable value [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | (109,330) | (109,330)
Effect of foreign exchange differences |  |  |
Balance at end |  | (109,330) | (109,330)
Goodwill [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 3,606,156 | 3,590,931
Effect of foreign exchange differences |  |  |
Acquisitions and expeditures |  |  |
Transfer to property, plant and equipment |  |  |
Amortization (note 26) |  |  |
Goodwill - Acquisition 50% CBSI |  |  | 15,225
Consolidation CBSI on November 30, 2019. |  |  |
Balance at end |  | 3,606,156 | 3,606,156
Goodwill [member] | Cost [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 3,846,563 | 3,831,338
Effect of foreign exchange differences |  |  |
Balance at end |  | 3,846,563 | 3,846,563
Goodwill [member] | Accumulated depreciation [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | (131,077) | (131,077)
Effect of foreign exchange differences |  |  |
Balance at end |  | (131,077) | (131,077)
Goodwill [member] | Adjustment for accumulated recoverable value [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | (109,330) | (109,330)
Effect of foreign exchange differences |  |  |
Balance at end |  | (109,330) | (109,330)
Customer related intangible assets [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 246,139 | 288,773
Effect of foreign exchange differences |  | 94,998 | 4,711
Acquisitions and expeditures |  |  | 0
Transfer to property, plant and equipment |  |  | 0
Amortization (note 26) |  | (63,096) | (47,345)
Goodwill - Acquisition 50% CBSI |  |  |
Consolidation CBSI on November 30, 2019. |  |  |
Balance at end |  | 278,041 | 246,139
Customer related intangible assets [member] | Cost [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 585,407 | 573,614
Effect of foreign exchange differences |  |  |
Balance at end |  | 823,540 | 585,407
Customer related intangible assets [member] | Accumulated depreciation [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | (339,268) | (284,841)
Effect of foreign exchange differences |  |  |
Balance at end |  | (545,499) | (339,268)
Software [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 53,859 | 54,972
Effect of foreign exchange differences |  | 584 | 3
Acquisitions and expeditures |  | 1,837 | 1,387
Transfer to property, plant and equipment |  | 633 | 7,808
Amortization (note 26) |  | (11,248) | (10,657)
Goodwill - Acquisition 50% CBSI |  |  |
Consolidation CBSI on November 30, 2019. |  |  | 346
Balance at end |  | 45,665 | 53,859
Software [member] | Cost [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 171,152 | 161,067
Effect of foreign exchange differences |  |  |
Balance at end |  | 182,059 | 171,152
Software [member] | Accumulated depreciation [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | (117,293) | (106,095)
Effect of foreign exchange differences |  |  |
Balance at end |  | (136,394) | (117,293)
Trademarks and patents [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 153,103 | 150,009
Effect of foreign exchange differences |  | 62,429 | 3,092
Acquisitions and expeditures |  |  |
Transfer to property, plant and equipment |  |  |
Amortization (note 26) |  |  |
Goodwill - Acquisition 50% CBSI |  |  |
Consolidation CBSI on November 30, 2019. |  |  | 2
Balance at end |  | 215,532 | 153,103
Trademarks and patents [member] | Cost [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 153,103 | 150,009
Effect of foreign exchange differences |  |  |
Balance at end |  | 215,532 | 153,103
Trademarks and patents [member] | Accumulated depreciation [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  |  |
Effect of foreign exchange differences |  |  |
Balance at end |  |  |
Rights and Licenses [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning | [1] | 3,170,960 | 3,166,999
Effect of foreign exchange differences | [1] |  |
Acquisitions and expeditures | [1] |  |
Transfer to property, plant and equipment | [1] | 4,000 | 4,088
Amortization (note 26) | [1] | (5,611) | (127)
Goodwill - Acquisition 50% CBSI | [1] |  |
Consolidation CBSI on November 30, 2019. | [1] |  |
Balance at end | [1] | 3,169,349 | 3,170,960
Rights and Licenses [member] | Cost [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning | [1] | 3,189,789 | 3,185,701
Effect of foreign exchange differences |  |  |
Balance at end | [1] | 3,193,787 | 3,189,789
Rights and Licenses [member] | Accumulated depreciation [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning | [1] | (18,829) | (18,702)
Effect of foreign exchange differences |  |  |
Balance at end | [1] | (24,438) | (18,829)
Other [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 1,564 | 1,491
Effect of foreign exchange differences |  | 638 | 33
Acquisitions and expeditures |  |  | 40
Others |  | (151) |
Balance at end |  | 2,051 | 1,564
Other [member] | Cost [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  | 1,564 | 1,491
Effect of foreign exchange differences |  |  |
Balance at end |  | 2,051 | 1,564
Other [member] | Accumulated depreciation [member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance at beginning |  |  |
Effect of foreign exchange differences |  |  |
Balance at end |  |  |
[1] | Composed mainly of mining rights. Amortization is based on production volume.

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- Definition The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2020-01-01 + Details
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