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Supplemental cash flow information (Tables)
 12 Months Ended
Dec. 31, 2022
Supplemental Cash Flow Information  
Schedule of supplemental cash flow information
               
   2022  2021  2020
          
Total additions to contract assets (Note 14)   5,240,528    4,759,789    3,948,158 
Total additions to intangible assets (Note 15 (b))   75,400    172,961    411,285 
                
Items not affecting cash (see breakdown below)   (1,765,391)   (1,236,081)   (1,095,786)
                
Total additions to intangible assets as per statement of cash flows   3,550,537    3,696,669    3,299,657 
                

 

Investments and financing operations affecting intangible assets but not cash:         
Interest capitalized in the year (Note 14 (a))   622,803    300,792    238,330 
Contractors payable   414,645    218,523    142,514 
Program contract commitments   —      —      4,422 
Performance agreements   576,392    478,177    314,720 
Right of use   42,182    140,187    28,549 
Construction margin (Note 26)   109,369    98,402    85,976 
Agreement with the municipality of Mauá   —      —      280,774 
Total   1,765,391    1,236,081    1,095,786