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Intangible assets (Tables)
 6 Months Ended
Jun. 30, 2023
Intangible Assets  
Schedule of class of assets
       
  Rights and Concessions (1) Software Goodwill Total
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)
Addition 148 84 − 232
Capitalized borrowing costs − 6 − 6
Write-offs (35) − − (35)
Transfers − 1 − 1
Signature Bonuses Transfers (2) (6) − − (6)
Amortization (2) (46) − (48)
Translation adjustment 210 39 2 251
Balance at June 30, 2023 2,838 523 26 3,387
Cost 2,900 1,779 26 4,705
Accumulated amortization and impairment (62) (1,256) − (1,318)
Estimated useful life in years (3) 5 Indefinite  
         
Balance at December 31, 2021 2,695 308 22 3,025
Cost 2,744 1,321 22 4,087
Accumulated amortization and impairment (49) (1,013) − (1,062)
Addition 895 87 − 982
Capitalized borrowing costs − 5 − 5
Write-offs (11) (1) − (12)
Transfers (10) (1) − (11)
Signature Bonuses Transfers (2) (840) − − (840)
Amortization (2) (35) − (37)
Impairment recognition − (1) − (1)
Translation adjustment 124 18 1 143
Balance at June 30, 2022 2,851 380 23 3,254
Cost 2,905 1,487 23 4,415
Accumulated amortization and impairment (54) (1,107) − (1,161)
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 field. In 2022, it relates to the 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.