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Financial liabilities designated at fair value through profit or loss (Tables)
12 Months Ended
Dec. 31, 2024
Notes and other explanatory information [abstract]  
Schedule of financial assets and liabilities
Schedule of financial assets and liabilities              
  12/31/2024   12/31/2023
  Current Non-current Total   Current Non-current Total
Structured notes              
Debt securities - 318 318   2 294 296
Total - 318 318   2 294 296