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Intangible assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes and other explanatory information [abstract] |
Schedule of intangible assets by class of assets |
Schedule of intangible assets by class of assets |  |  |  |
| Rights and Concessions (1) | Software | Goodwill | Total
Balance at January 1, 2023 | 2,523 | 439 | 24 | 2,986
Cost | 2,578 | 1,560 | 24 | 4,162
Accumulated amortization and impairment | (55) | (1,121) | − | (1,176)
Addition | 148 | 200 | − | 348
Capitalized borrowing costs | − | 13 | − | 13
Write-offs | (41) | − | − | (41)
Transfers | (11) | 2 | − | (9)
Signature Bonuses Transfers (2) | (16) | − | − | (16)
Amortization | (4) | (100) | − | (104)
Impairment recognition (note 26) | (364) | − | − | (364)
Translation adjustment | 190 | 38 | 1 | 229
Balance at December 31, 2023 | 2,425 | 592 | 25 | 3,042
Cost | 2,489 | 1,891 | 25 | 4,405
Accumulated amortization and impairment | (64) | (1,299) | − | (1,363)
Estimated useful life in years | (3) | 5 | Indefinite |
Balance at January 1, 2022 | 2,695 | 308 | 22 | 3,025
Cost | 2,744 | 1,321 | 22 | 4,087
Accumulated amortization and impairment | (49) | (1,013) | − | (1,062)
Addition | 898 | 181 | − | 1,079
Capitalized borrowing costs | − | 11 | − | 11
Write-offs | (12) | (6) | − | (18)
Transfers | (11) | (1) | − | (12)
Signature Bonuses Transfers (2) | (1,177) | − | − | (1,177)
Amortization | (4) | (73) | − | (77)
Impairment recognition (note 26) | − | (1) | − | (1)
Translation adjustment | 134 | 20 | 2 | 156
Balance at December 31, 2022 | 2,523 | 439 | 24 | 2,986
Cost | 2,578 | 1,560 | 24 | 4,162
Accumulated amortization and impairment | (55) | (1,121) | − | (1,176)
Estimated useful life in years | (3) | 5 | Indefinite |
(1) It comprises mainly signature bonuses (amounts paid in concession contracts for oil or natural gas exploration and production sharing), in addition to public service concessions, trademarks and patents and others.
(2) Transfers to PP&E. In 2023, it refers to the declaration of commerciality of the Manjuba, Espadim, Raia Manta and Raia Pintada fields. In 2022, it relates to the Itapu, Atapu and Sepia.
(3) Mainly composed of assets with indefinite useful lives, which are reviewed annually to determine whether events and circumstances continue to support an indefinite useful life assessment.

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- Definition The disclosure of the reconciliation of changes in intangible assets and goodwill. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2023-01-01 -Paragraph 118 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2023-en-r&anchor=para_118&doctype=Standard -URIDate 2023-03-23 + Details
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