v3.25.2
Intangibles (Tables)
6 Months Ended
Jun. 30, 2025
Notes and other explanatory information [abstract]  
Schedule of movements in intangibles
           
  Notes Goodwill Concessions Software Research and development project Total
Balance as of December 31, 2024   3,038 6,942 84 450 10,514
Additions   149 15 164
Disposals   (4) (4)
Amortization   (137) (22) (159)
Impairment 15(a) (117) (117)
Transfer to held for sale (Energy Assets) 15(a) (131) (770) (3) (904)
Translation adjustment   262 895 10 59 1,226
Balance as of June 30, 2025   3,052 7,075 87 506 10,720
Cost   3,052 8,943 653 506 13,154
Accumulated amortization   (1,868) (566) (2,434)
Balance as of June 30, 2025   3,052 7,075 87 506 10,720
             
Balance as of December 31, 2023   3,263 7,689 104 575 11,631
Additions   23 30 53
Disposals   (4) (5) (9)
Amortization   (125) (29) (154)
Translation adjustment   (252) (989) (12) (73) (1,326)
Balance as of June 30, 2024   3,011 6,594 93 497 10,195
Cost   3,011 8,200 606 497 12,314
Accumulated amortization     (1,606) (513) (2,119)
Balance as of June 30, 2024   3,011 6,594 93 497 10,195