v3.26.1
SEGMENT INFORMATION (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
IfrsStatementLineItems [Line Items]      
Total R$ 44,797,946 R$ 43,687,460 R$ 45,437,950
Cost of sales and services (32,404,221) (31,990,696) (33,475,189)
Gross profit 12,393,725 11,696,764 11,962,761
General and administrative expenses (6,012,312) (6,309,296) (4,489,983)
Other operating (income) expenses, net (2,083,483) (1,565,494) (2,637,160)
Equity in results of affiliated companies 518,744 448,048 351,131
Operating result before Financial Income and Taxes 4,816,674 4,270,022 5,186,749
Country Of Asia [Member]      
IfrsStatementLineItems [Line Items]      
Total 15,810,205 14,186,132 16,541,638
Country Of North America [Member]      
IfrsStatementLineItems [Line Items]      
Total 1,055,824 1,750,998 1,671,773
Country Of Latin America [Member]      
IfrsStatementLineItems [Line Items]      
Total 63,352 70,752 132,219
Country Of Europe [Member]      
IfrsStatementLineItems [Line Items]      
Total 4,308,097 5,281,368 5,013,780
Country Of Others [Member]      
IfrsStatementLineItems [Line Items]      
Total 1,274,512 57,812  
Domestic Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 22,285,956 22,340,398 22,078,540
Foreign [Member]      
IfrsStatementLineItems [Line Items]      
Total 22,511,990    
Foreign Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 22,511,990 21,347,062 23,359,410
Steel [Member]      
IfrsStatementLineItems [Line Items]      
Total 22,025,804 23,178,678 22,717,486
Cost of sales and services (19,980,031) (21,759,435) (21,008,013)
Gross profit 2,045,773 1,419,243 1,709,473
General and administrative expenses (1,304,105) (1,289,952) (1,218,767)
Other operating (income) expenses, net (1,151,153) (864,103) (1,065,188)
Operating result before Financial Income and Taxes (409,485) (734,812) (574,482)
Steel [Member] | Country Of North America [Member]      
IfrsStatementLineItems [Line Items]      
Total 1,055,824 1,750,998 1,671,773
Steel [Member] | Country Of Latin America [Member]      
IfrsStatementLineItems [Line Items]      
Total 42,956 70,752 132,219
Steel [Member] | Country Of Europe [Member]      
IfrsStatementLineItems [Line Items]      
Total 3,664,868 4,455,433 4,397,229
Steel [Member] | Country Of Others [Member]      
IfrsStatementLineItems [Line Items]      
Total 1,257,014    
Steel [Member] | Domestic Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 16,005,141 16,901,495 16,516,265
Steel [Member] | Foreign [Member]      
IfrsStatementLineItems [Line Items]      
Total 6,020,663    
Steel [Member] | Foreign Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 6,020,662 6,277,183 6,201,221
Mining [Member]      
IfrsStatementLineItems [Line Items]      
Total 15,400,473 13,092,645 17,135,648
Cost of sales and services (10,052,663) (8,202,297) (9,931,881)
Gross profit 5,347,810 4,890,348 7,203,767
General and administrative expenses (341,612) (267,173) (421,218)
Other operating (income) expenses, net (436,614) (10,803) (974,590)
Operating result before Financial Income and Taxes 4,569,584 4,612,372 5,807,959
Mining [Member] | Country Of Asia [Member]      
IfrsStatementLineItems [Line Items]      
Total 13,135,426 10,698,348 14,714,924
Mining [Member] | Country Of Europe [Member]      
IfrsStatementLineItems [Line Items]      
Total 643,229 825,935 616,551
Mining [Member] | Country Of Others [Member]      
IfrsStatementLineItems [Line Items]      
Total   57,812  
Mining [Member] | Domestic Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 1,621,818 1,510,550 1,804,173
Mining [Member] | Foreign [Member]      
IfrsStatementLineItems [Line Items]      
Total 13,778,655    
Mining [Member] | Foreign Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 13,778,655 11,582,095 15,331,475
Logistics Port [Member]      
IfrsStatementLineItems [Line Items]      
Total 303,839 352,508 265,949
Cost of sales and services (242,931) (262,061) (248,938)
Gross profit 60,908 90,447 17,011
General and administrative expenses (13,664) (11,336) (10,558)
Other operating (income) expenses, net (9,226) (13,266) (675)
Operating result before Financial Income and Taxes 38,018 65,845 5,778
Logistics Port [Member] | Domestic Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 303,839 352,508 265,949
Railroads [Member]      
IfrsStatementLineItems [Line Items]      
Total 3,114,434 2,892,041 2,644,949
Cost of sales and services (1,734,809) (1,674,401) (1,492,728)
Gross profit 1,379,625 1,217,640 1,152,221
General and administrative expenses (293,003) (266,128) (218,878)
Other operating (income) expenses, net (39,806) 270,024 10,390
Operating result before Financial Income and Taxes 1,046,816 1,221,536 943,733
Railroads [Member] | Domestic Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 3,114,434 2,892,041 2,644,949
Road Transport [Member]      
IfrsStatementLineItems [Line Items]      
Total 955,943  
Cost of sales and services (833,177)    
Gross profit 122,766    
General and administrative expenses (48,793)    
Other operating (income) expenses, net (13,036)    
Operating result before Financial Income and Taxes 60,937    
Road Transport [Member] | Country Of Latin America [Member]      
IfrsStatementLineItems [Line Items]      
Total 20,392    
Road Transport [Member] | Domestic Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 935,551    
Road Transport [Member] | Foreign [Member]      
IfrsStatementLineItems [Line Items]      
Total 20,392    
Road Transport [Member] | Foreign Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 20,392    
Energy [Member]      
IfrsStatementLineItems [Line Items]      
Total 682,068 521,465 545,735
Cost of sales and services (480,426) (419,138) (441,281)
Gross profit 201,642 102,327 104,454
General and administrative expenses (35,418) (48,674) (57,854)
Other operating (income) expenses, net (32,790) (61,065) 188,866
Operating result before Financial Income and Taxes 133,434 (7,412) 235,466
Energy [Member] | Domestic Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 682,068 521,465 545,735
Cement [Member]      
IfrsStatementLineItems [Line Items]      
Total 4,905,993 4,766,343 4,510,553
Cost of sales and services (3,353,074) (3,384,409) (3,644,362)
Gross profit 1,552,919 1,381,934 866,191
General and administrative expenses (1,123,892) (815,797) (557,585)
Other operating (income) expenses, net 308,289 (94,899) (253,931)
Operating result before Financial Income and Taxes 737,316 471,238 54,675
Cement [Member] | Country Of Latin America [Member]      
IfrsStatementLineItems [Line Items]      
Total 4    
Cement [Member] | Domestic Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 4,905,989 4,766,343 4,510,553
Cement [Member] | Foreign [Member]      
IfrsStatementLineItems [Line Items]      
Total 4    
Cement [Member] | Foreign Market [Member]      
IfrsStatementLineItems [Line Items]      
Total 4    
Corporate Expenses Elimination [Member]      
IfrsStatementLineItems [Line Items]      
Total (2,590,608) (1,116,220) (2,382,370)
Cost of sales and services 4,272,890 3,711,045 3,292,014
Gross profit 1,682,282 2,594,825 909,644
General and administrative expenses (2,851,825) (3,610,236) (2,005,123)
Other operating (income) expenses, net (709,147) (791,382) (542,032)
Equity in results of affiliated companies 518,744 448,048 351,131
Operating result before Financial Income and Taxes (1,359,946) (1,358,745) (1,286,380)
Corporate Expenses Elimination [Member] | Country Of Asia [Member]      
IfrsStatementLineItems [Line Items]      
Total 2,674,779 3,487,784 1,826,714
Corporate Expenses Elimination [Member] | Country Of Others [Member]      
IfrsStatementLineItems [Line Items]      
Total 17,498    
Corporate Expenses Elimination [Member] | Domestic Market [Member]      
IfrsStatementLineItems [Line Items]      
Total (5,282,884) (4,604,004) (4,209,084)
Corporate Expenses Elimination [Member] | Foreign [Member]      
IfrsStatementLineItems [Line Items]      
Total 2,692,276    
Corporate Expenses Elimination [Member] | Foreign Market [Member]      
IfrsStatementLineItems [Line Items]      
Total R$ 2,692,277 R$ 3,487,784 R$ 1,826,714