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Provision for decommissioning costs (Details Narrative) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Provision For Decommissioning Costs    
Opening balance $ 15,619 $ 18,780
Adjustment to provision (37) (5)
Transfers related to liabilities held for sale [1] (1,075) (358)
Payments and use of provisions 404 324
Interest accrued 246 366
Others (4) (3)
Cumulative translation adjustment 1,055 706
Closing balance $ 15,474 $ 19,172
[1] In the first half of 2022, it refers to the Golfinho and Camarupim Group (US$ 103), in Espírito Santo,  the Albacora Leste Field (US$ 374), in Rio de Janeiro, the Norte Capixaba Group (US$ 32), in Espírito Santo state, and the Potiguar Group (US$ 566), in Rio Grande do Norte state, as set out in note 22.  In the first half of 2021, it includes transfers to held for sale mainly related to US$ 109 in the concessions of Peroá Group in Espírito Santo state, US$ 97 in Miranga Group in Bahia state and US$ 153 in Alagoas Group in Alagoas state.