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Property, plant and equipment (Tables)
 12 Months Ended
Dec. 31, 2022
Property, plant and equipment [abstract]  
Schedule of property plant and equipment by class of assets
 

Land, buildings

and

improvement

 Equipment and other assets (*)

Assets under

construction (**)

 Exploration and development costs (***) Right-of-use assets Total
Balance at January 1, 2022 2,383 53,126 16,922 35,847 17,052 125,330
Cost 4,080 98,085 25,954 61,906 26,382 216,407
Accumulated depreciation and impairment (****) (1,697) (44,959) (9,032) (26,059) (9,330) (91,077)
Additions − 841 7,525 48 7,126 15,540
Decommissioning costs - Additions to / review of estimates − − − 3,269 − 3,269
Capitalized borrowing costs − − 1,021 − − 1,021
Signature Bonuses Transfers (*****) − − − 1,177 − 1,177
Write-offs (20) (746) (2,152) (667) (1,469) (5,054)
Transfers (******) 130 5,162 (8,611) 3,617 2 300
Transfers to assets held for sale (27) (1,874) (410) (1,976) (140) (4,427)
Depreciation, amortization and depletion (88) (4,746) − (5,306) (4,478) (14,618)
Impairment recognition (note 25) − (693) (605) (142) (13) (1,453)
Impairment reversal (note 25) − 223 15 52 − 290
Translation adjustment 160 3,854 1,133 2,515 1,132 8,794
Balance at December 31, 2022 2,538 55,147 14,838 38,434 19,212 130,169
Cost 4,343 105,429 23,938 67,581 29,670 230,961
Accumulated depreciation and impairment (****) (1,805) (50,282) (9,100) (29,147) (10,458) (100,792)

 

 

             
Balance at January 1, 2021 3,043 58,680 15,443 31,166 15,869 124,201
Cost 5,450 107,199 27,544 60,902 23,780 224,875
Accumulated depreciation and impairment (****) (2,407) (48,519) (12,101) (29,736) (7,911) (100,674)
Additions − 1,650 5,761 5 6,954 14,370
Decommissioning costs - Additions to / review of estimates − − − (1,069) − (1,069)
Capitalized borrowing costs − − 971 − − 971
Signature Bonuses Transfers (****) − − − 11,629 − 11,629
Write-offs               (38) (588) (599) (1,645) (279) (3,149)
Transfers (******) (295) 2,934 (3,160) 1,781 3 1,263
Transfers to assets held for sale (53) (2,776) (575) (822) (14) (4,240)
Depreciation, amortization and depletion (97) (4,235) − (4,342) (4,281) (12,955)
Impairment recognition − (377) (1) (27) (4) (409)
Impairment reversal − 1,796 114 1,879 34 3,823
Translation adjustment (177) (3,958) (1,032) (2,708) (1,230) (9,105)
Balance at December 31, 2021 2,383 53,126 16,922 35,847 17,052 125,330
Cost 4,080 98,085 25,954 61,906 26,382 216,407
Accumulated depreciation and impairment (****) (1,697) (44,959) (9,032) (26,059) (9,330) (91,077)
(*) It is composed of production platforms, refineries, thermoelectric power plants, natural gas processing plants, pipelines, and other operating, storage and production plants, including subsea equipment for the production and flow of oil and gas, depreciated based on the units of production method.
(**) See note 12 for assets under construction by operating segment.
(***) It is composed of exploration and production assets related to wells, abandonment and dismantling of areas, signature bonuses associated with proved reserves and other costs directly associated with the exploration and production of oil and gas (oil and gas production properties).
(****) In the case of land and assets under construction, it refers only to impairment losses.
(*****) Transfer from intangible assets related to Atapu, Sepia and Itapu fields in 2022 (related to Búzios in 2021).
(*****) It includes mainly transfers between classes of assets and transfers from advances to suppliers.
Schedule of useful life of assets
 
Asset Weighted average useful life in years
Buildings and improvement 40 (25 to 50)
Equipment and other assets 20 (3 to 31) (except assets by the units of production method)
Exploration and development costs Units of production method
Right-of-use 8 (2 to 47)
Schedule of estimated useful life of buildings and improvements, equipment and other assets
 
  Buildings and improvements, equipment and other assets
       
Estimated useful life Cost Accumulated  depreciation Balance at December 31, 2022
5  years or less 4,762 (3,894) 868
6 - 10 years 8,316 (6,288) 2,028
11 - 15 years 5,442 (1,767) 3,675
16 - 20 years 27,705 (16,590) 11,115
21 - 25 years 30,195 (7,709) 22,486
25 - 30 years 11,727 (3,480) 8,247
30 years or more 4,600 (1,855) 2,745
Units of production method 16,907 (10,498) 6,409
Total 109,654 (52,081) 57,573
Buildings and improvements 4,225 (1,799) 2,426
Equipment and other assets 105,429 (50,282) 55,147
       
Schedule of asset and readjustment on accumulated depreciation and impairment
       
  Platforms Vessels Properties Total
Balance at December 31, 2022 9,211 8,254 1,747 19,212
Cost 12,604 14,788 2,278 29,670
Accumulated depreciation and impairment (3,393) (6,534) (531) (10,458)
Without contractual readjustment clauses − (5,322) (64) (5,386)
With contractual readjustment clauses  - Brazil (3,393) (218) − (3,611)
With contractual readjustment clauses – abroad − (994) (467) (1,461)
Balance at December 31, 2021 9,840 5,997 1,215 17,052
Cost 13,362 11,267 1,753 26,382
Accumulated depreciation and impairment (3,522) (5,270) (538) (9,330)
Without contractual readjustment clauses − (4,375) (97) (4,472)
With contractual readjustment clauses  - Brazil (3,522) (196) − (3,718)
With contractual readjustment clauses – abroad − (699) (441) (1,140)