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SEGMENT REPORTING - Summary (Details) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Segment reporting as per business segments |  |  |  |
Net sales | R$ 46,159,478 | R$ 36,917,619 | R$ 37,651,667 |
Cost of sales | (40,010,100) | (33,312,995) | (34,187,941) |
GROSS PROFIT | 6,149,378 | 3,604,624 | 3,463,726 |
Selling, general and administrative expenses | (1,662,794) | (1,654,908) | (2,239,028) |
Other operating income (expenses) | (34,992) | 91,731 | 127,847 |
Impairment of assets |  | (1,114,807) | (2,917,911) |
Results in operations with subsidiaries and associate company | (414,507) | (721,682) | (58,223) |
Reversal of provision for tax liabilities, net |  | 929,711 |  |
Equity in earnings of unconsolidated companies | 10,141 | (34,597) | (12,771) |
INCOME (LOSS) BEFORE FINANCIAL INCOME (EXPENSES) AND TAXES | 4,047,226 | 1,100,072 | (1,636,360) |
Financial result, net | (1,889,795) | (1,143,348) | (945,255) |
INCOME (LOSS) BEFORE TAXES | 2,157,431 | (43,276) | (2,581,615) |
Income and social contribution taxes | 168,951 | (295,391) | (304,314) |
Net income (loss) | 2,326,382 | (338,667) | (2,885,929) |
Depreciation/amortization | 1,891,814 | 2,092,551 | 2,535,955 |
Investments in associates and jointly-controlled entities | 1,367,802 | 1,280,299 | 798,844 | R$ 1,392,882
Total assets | 51,281,029 | 50,301,761 | 54,635,141 |
Total liabilities | 25,342,458 | 26,407,820 | 30,360,488 |
Operating Segments | Brazil |  |  |  |
Segment reporting as per business segments |  |  |  |
Net sales | 15,745,161 | 12,562,727 | 11,634,862 |
Cost of sales | (13,044,433) | (10,996,383) | (10,405,078) |
GROSS PROFIT | 2,700,728 | 1,566,344 | 1,229,784 |
Selling, general and administrative expenses | (564,031) | (539,613) | (678,369) |
Other operating income (expenses) | (33,814) | (11,513) | 2,111 |
Impairment of assets |  | (45,279) |  |
Equity in earnings of unconsolidated companies | (1,700) |  |  |
INCOME (LOSS) BEFORE FINANCIAL INCOME (EXPENSES) AND TAXES | 2,101,183 | 969,939 | 553,526 |
Financial result, net | (442,966) | (564,397) | (603,373) |
INCOME (LOSS) BEFORE TAXES | 1,658,217 | 405,542 | (49,847) |
Income and social contribution taxes | (410,651) | (103,263) | 13,140 |
Net income (loss) | 1,247,566 | 302,279 | (36,707) |
Depreciation/amortization | 951,826 | 909,333 | 952,848 |
Investments in associates and jointly-controlled entities | 3,250 |  |  |
Total assets | 17,473,039 | 17,051,262 | 18,672,770 |
Total liabilities | 8,072,380 | 9,592,948 | 10,761,705 |
Operating Segments | North America |  |  |  |
Segment reporting as per business segments |  |  |  |
Net sales | 19,927,390 | 15,433,380 | 15,430,814 |
Cost of sales | (18,164,834) | (14,823,590) | (14,514,789) |
GROSS PROFIT | 1,762,556 | 609,790 | 916,025 |
Selling, general and administrative expenses | (607,581) | (569,696) | (778,218) |
Other operating income (expenses) | 19,114 | 29,113 | 26,223 |
Impairment of assets |  | (1,069,528) | (2,779,146) |
Equity in earnings of unconsolidated companies | (77,872) | (111,581) | (46,917) |
INCOME (LOSS) BEFORE FINANCIAL INCOME (EXPENSES) AND TAXES | 1,096,217 | (1,111,902) | (2,662,033) |
Financial result, net | (37,351) | (46,184) | (63,654) |
INCOME (LOSS) BEFORE TAXES | 1,058,866 | (1,158,086) | (2,725,687) |
Income and social contribution taxes | (224,897) | 201,807 | 133,818 |
Net income (loss) | 833,969 | (956,279) | (2,591,869) |
Depreciation/amortization | 511,154 | 684,121 | 874,299 |
Investments in associates and jointly-controlled entities | 301,271 | 346,080 | 303,526 |
Total assets | 14,659,926 | 14,872,755 | 16,459,784 |
Total liabilities | 4,935,210 | 3,315,546 | 3,407,444 |
Operating Segments | South America |  |  |  |
Segment reporting as per business segments |  |  |  |
Net sales | 3,801,210 | 4,025,736 | 4,775,598 |
Cost of sales | (3,230,952) | (3,523,394) | (4,103,231) |
GROSS PROFIT | 570,258 | 502,342 | 672,367 |
Selling, general and administrative expenses | (136,707) | (202,862) | (253,177) |
Other operating income (expenses) | (11,421) | 11,260 | 41,396 |
Impairment of assets |  |  | (138,765) |
Equity in earnings of unconsolidated companies | 51,648 | 41,554 | 16,366 |
INCOME (LOSS) BEFORE FINANCIAL INCOME (EXPENSES) AND TAXES | 473,778 | 352,294 | 338,187 |
Financial result, net | (117,270) | (74,301) | (96,822) |
INCOME (LOSS) BEFORE TAXES | 356,508 | 277,993 | 241,365 |
Income and social contribution taxes | (86,667) | (123,552) | (107,124) |
Net income (loss) | 269,841 | 154,441 | 134,241 |
Depreciation/amortization | 88,537 | 155,038 | 182,672 |
Investments in associates and jointly-controlled entities | 701,233 | 584,898 | 404,522 |
Total assets | 4,421,487 | 5,208,265 | 5,582,926 |
Total liabilities | 1,053,007 | 1,711,963 | 1,651,590 |
Operating Segments | Special Steel |  |  |  |
Segment reporting as per business segments |  |  |  |
Net sales | 8,158,626 | 6,228,543 | 6,884,733 |
Cost of sales | (7,064,608) | (5,301,172) | (6,238,749) |
GROSS PROFIT | 1,094,018 | 927,371 | 645,984 |
Selling, general and administrative expenses | (186,037) | (166,656) | (284,962) |
Other operating income (expenses) | 10,081 | 14,989 | 14,166 |
Equity in earnings of unconsolidated companies | 15,629 | 15,460 |  |
INCOME (LOSS) BEFORE FINANCIAL INCOME (EXPENSES) AND TAXES | 933,691 | 791,164 | 375,188 |
Financial result, net | (112,109) | (122,837) | (148,313) |
INCOME (LOSS) BEFORE TAXES | 821,582 | 668,327 | 226,875 |
Income and social contribution taxes | (191,386) | (192,902) | (64,348) |
Net income (loss) | 630,196 | 475,425 | 162,527 |
Depreciation/amortization | 340,297 | 344,059 | 526,136 |
Investments in associates and jointly-controlled entities | 213,899 | 199,647 |  |
Total assets | 8,825,830 | 8,834,041 | 11,970,202 |
Total liabilities | 1,736,085 | 2,753,091 | 6,519,255 |
Eliminations and Adjustments |  |  |  |
Segment reporting as per business segments |  |  |  |
Net sales | (1,472,909) | (1,332,767) | (1,074,340) |
Cost of sales | 1,494,727 | 1,331,544 | 1,073,906 |
GROSS PROFIT | 21,818 | (1,223) | (434) |
Selling, general and administrative expenses | (168,438) | (176,081) | (244,302) |
Other operating income (expenses) | (18,952) | 47,882 | 43,951 |
Results in operations with subsidiaries and associate company | (414,507) | (721,682) | (58,223) |
Reversal of provision for tax liabilities, net |  | 929,711 |  |
Equity in earnings of unconsolidated companies | 22,436 | 19,970 | 17,780 |
INCOME (LOSS) BEFORE FINANCIAL INCOME (EXPENSES) AND TAXES | (557,643) | 98,577 | (241,228) |
Financial result, net | (1,180,099) | (335,629) | (33,093) |
INCOME (LOSS) BEFORE TAXES | (1,737,742) | (237,052) | (274,321) |
Income and social contribution taxes | 1,082,552 | (77,481) | (279,800) |
Net income (loss) | (655,190) | (314,533) | (554,121) |
Investments in associates and jointly-controlled entities | 148,149 | 149,674 | 90,796 |
Total assets | 5,900,747 | 4,335,438 | 1,949,459 |
Total liabilities | 9,545,776 | 9,034,272 | 8,020,494 |
Eliminations and Adjustments | Brazil |  |  |  |
Segment reporting as per business segments |  |  |  |
Net sales | (1,280,770) | (1,216,526) | (885,050) |
Eliminations and Adjustments | North America |  |  |  |
Segment reporting as per business segments |  |  |  |
Net sales | (84,335) | (59,478) | (90,267) |
Eliminations and Adjustments | South America |  |  |  |
Segment reporting as per business segments |  |  |  |
Net sales | (4,988) | (6,490) | (6,386) |
Eliminations and Adjustments | Special Steel |  |  |  |
Segment reporting as per business segments |  |  |  |
Net sales | R$ (102,816) | R$ (50,273) | R$ (92,637) |

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