Financial risk management (Details 8) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Notes and other explanatory information [abstract]
Beginning balance	$ (18,210)	$ (26,527)
Recognized in Other comprehensive income	(15,627)	4,554
Reclassified to the statement of income occurred exports	2,992	3,763
Other comprehensive income (loss)	(12,635)	8,317
Ending balance	$ (30,845)	$ (18,210)

The gains (losses) recognised in other comprehensive income on cash flow hedges, net of tax, before reclassification adjustments. [Refer: Cash flow hedges [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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