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SEGMENT INFORMATION (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | R$ 44,362,120 | R$ 47,912,039 | R$ 30,064,020
Cost of sales and services | (31,054,016) | (25,837,475) | (19,124,901)
Gross profit | 13,308,104 | 22,074,564 | 10,939,119
General and administrative expenses | (3,249,937) | (2,959,446) | (2,508,875)
Other operating (income) expenses, net | (2,654,622) | 1,242,340 | (2,787,562)
Equity in results of affiliated companies | 237,917 | 182,504 | 71,755
Operating result before Financial Income and Taxes | 7,641,462 | 20,539,962 | 5,714,437
Steel [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 29,341,011 | 30,091,448 | 16,602,895
Cost of sales and services | (23,256,319) | (20,081,043) | (14,170,692)
Gross profit | 6,084,692 | 10,010,405 | 2,432,203
General and administrative expenses | (1,314,352) | (1,158,748) | (922,862)
Other operating (income) expenses, net | (777,976) | (405,018) | (392,061)
Operating result before Financial Income and Taxes | 3,992,364 | 8,446,639 | 1,117,280
Mining [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 12,525,131 | 18,043,386 | 12,683,231
Cost of sales and services | (7,105,424) | (7,705,835) | (5,531,763)
Gross profit | 5,419,707 | 10,337,551 | 7,151,468
General and administrative expenses | (352,152) | (351,371) | (179,806)
Other operating (income) expenses, net | (449,871) | (287,744) | (665,881)
Operating result before Financial Income and Taxes | 4,617,684 | 9,698,436 | 6,305,781
Logistics [Member] | Port [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 307,999 | 311,040 | 256,371
Cost of sales and services | (220,491) | (220,494) | (187,860)
Gross profit | 87,508 | 90,546 | 68,511
General and administrative expenses | (32,976) | (33,853) | (21,949)
Other operating (income) expenses, net | (14,353) | (8,290) | (5,420)
Operating result before Financial Income and Taxes | 40,179 | 48,403 | 41,142
Logistics [Member] | Railroads [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 2,311,754 | 1,839,307 | 1,489,647
Cost of sales and services | (1,507,028) | (1,266,112) | (1,094,130)
Gross profit | 804,726 | 573,195 | 395,517
General and administrative expenses | (153,294) | (135,091) | (114,970)
Other operating (income) expenses, net | 33,927 | 58,253 | 52,569
Operating result before Financial Income and Taxes | 685,359 | 496,357 | 333,116
Energy [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 293,035 | 222,785 | 172,859
Cost of sales and services | (287,340) | (146,349) | (128,227)
Gross profit | 5,695 | 76,436 | 44,632
General and administrative expenses | (43,786) | (32,083) | (30,243)
Other operating (income) expenses, net | 39,376 | 41,337 | (2,967)
Operating result before Financial Income and Taxes | 1,285 | 85,690 | 11,422
Cement [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 2,819,551 | 1,430,150 | 858,192
Cost of sales and services | (1,974,415) | (892,900) | (647,132)
Gross profit | 845,136 | 537,250 | 211,060
General and administrative expenses | (386,230) | (190,986) | (88,232)
Other operating (income) expenses, net | (105,018) | (63,631) | (44,893)
Operating result before Financial Income and Taxes | 353,888 | 282,633 | 77,935
Elimination of intersegment amounts [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | (3,236,361) | (4,026,077) | (1,999,175)
Cost of sales and services | 3,297,001 | 4,475,259 | 2,634,903
Gross profit | 60,640 | 449,182 | 635,728
General and administrative expenses | (967,147) | (1,057,314) | (1,150,813)
Other operating (income) expenses, net | (1,380,707) | 1,907,433 | (1,728,909)
Equity in results of affiliated companies | 237,917 | 182,504 | 71,755
Operating result before Financial Income and Taxes | (2,049,297) | 1,481,805 | (2,172,239)
Domestic Market [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 23,957,541 | 23,233,830 | 12,886,213
Domestic Market [Member] | Steel [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 20,588,235 | 21,400,318 | 11,721,339
Domestic Market [Member] | Mining [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 1,700,051 | 3,114,385 | 1,532,589
Domestic Market [Member] | Logistics [Member] | Port [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 307,999 | 311,040 |
Operating result before Financial Income and Taxes | 307,999 | 311,040 | 256,371
Domestic Market [Member] | Logistics [Member] | Railroads [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 2,311,754 | 1,839,307 |
Operating result before Financial Income and Taxes | 2,311,754 | 1,839,307 | 1,489,647
Domestic Market [Member] | Energy [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 293,035 | 222,785 |
Operating result before Financial Income and Taxes | 293,035 | 222,785 | 172,859
Domestic Market [Member] | Cement [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 2,819,551 | 1,430,150 |
Operating result before Financial Income and Taxes | 2,819,551 | 1,430,150 | 857,197
Domestic Market [Member] | Elimination of intersegment amounts [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | (4,063,084) | (5,084,155) | (3,143,789)
Foreign Market [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 20,404,579 | 24,678,209 | 17,177,807
Foreign Market [Member] | Steel [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 8,752,776 | 8,691,130 | 4,881,556
Foreign Market [Member] | Mining [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 10,825,080 | 14,929,001 | 11,150,642
Foreign Market [Member] | Cement [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues |  |  | 995
Foreign Market [Member] | Elimination of intersegment amounts [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 826,723 | 1,058,078 | 1,144,614
Asia [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 10,341,232 | 13,685,991 | 8,606,405
Asia [Member] | Mining [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 9,514,509 | 12,627,913 | 7,461,791
Asia [Member] | Elimination of intersegment amounts [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 826,723 | 1,058,078 | 1,144,614
North America [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 2,018,046 | 2,275,612 | 922,299
North America [Member] | Steel [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 2,018,046 | 2,275,612 | 922,299
Latin America [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 382,128 | 355,912 | 328,895
Latin America [Member] | Steel [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 382,128 | 355,912 | 327,900
Latin America [Member] | Cement [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues |  |  | 995
Europe [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 7,662,107 | 8,360,694 | 7,315,862
Europe [Member] | Steel [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 6,351,536 | 6,059,606 | 3,627,011
Europe [Member] | Mining [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 1,310,571 | R$ 2,301,088 | 3,688,851
Others [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 1,066 |  | 4,346
Others [Member] | Steel [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | R$ 1,066 |  | R$ 4,346

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