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10. BASIS OF CONSOLIDATION AND INVESTMENTS IN SUBSIDIARIES AND AFFILIATES (Details 4) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Current Assets |  |  |  |
Cash and cash equivalents | R$ 9,944,586 | R$ 1,088,955 | R$ 2,248,004 | R$ 3,411,572
Other current assets | 367,814 | 390,581 |  |
Total current assets | 23,386,194 | 12,725,805 |  |
Noncurrent Assets |  |  |  |
Other non-current assets | 3,603,047 | 2,793,115 |  |
Total non-current assets | 39,615,955 | 38,143,471 |  |
Total Assets | 63,002,149 | 50,869,276 |  |
Current Liabilities |  |  |  |
Borrowings and financing | 4,126,453 | 5,125,843 |  |
Lease liabilities | 93,626 | 35,040 |  |
Total current liabilities | 14,725,696 | 11,619,957 |  |
Noncurrent Liabilities |  |  |  |
Borrowings and financing | 31,144,200 | 22,841,193 |  |
Lease liabilities | 436,505 | 439,350 |  |
Total non-current liabilities | 37,024,948 | 27,887,387 |  |
Total equity | 11,251,505 | 11,361,932 | 10,013,440 | R$ 8,288,229
Total liabilities and shareholders' equity | 63,002,149 | 50,869,276 |  |
Net revenue | 30,064,020 | 25,436,417 | 22,968,885 |
Cost of sales and services | 19,124,901 | 17,263,264 | 16,105,657 |
Gross profit | 10,939,119 | 8,173,153 | 6,863,228 |
Financial income (expenses), net | (796,311) | (2,131,184) | (1,495,643) |
Income before income tax and social contribution | R$ 4,918,126 | 1,410,733 | R$ 5,450,917 |
MRS Logistica S.A. [member] |  |  |  |
BasisOfConsolidationAndInvestmentsInSubsidiariesAndAffiliatesLineItems [Line Items] |  |  |  |
Equity interest (%) | 34.94% |  |  |
Current Assets |  |  |  |
Cash and cash equivalents | R$ 1,206,484 | 670,296 |  |
Advances to suppliers | 27,312 | 20,100 |  |
Other current assets | 823,204 | 1,326,281 |  |
Total current assets | 2,057,000 | 2,016,677 |  |
Noncurrent Assets |  |  |  |
Other non-current assets | 608,878 | 789,562 |  |
Investments, PP&E and intangible assets | 8,537,009 | 8,316,033 |  |
Total non-current assets | 9,145,887 | 9,105,595 |  |
Total Assets | 11,202,887 | 11,122,272 |  |
Current Liabilities |  |  |  |
Borrowings and financing | 828,439 | 653,784 |  |
Lease liabilities | 317,526 | 256,034 |  |
Other current liabilities | 1,117,975 | 1,561,684 |  |
Total current liabilities | 2,263,940 | 2,471,502 |  |
Noncurrent Liabilities |  |  |  |
Borrowings and financing | 2,162,657 | 2,369,615 |  |
Lease liabilities | 1,674,594 | 1,650,758 |  |
Other non-current liabilities | 788,862 | 527,871 |  |
Total non-current liabilities | 4,626,113 | 4,548,244 |  |
Total equity | 4,312,834 | 4,102,526 |  |
Total liabilities and shareholders' equity | 11,202,887 | 11,122,272 |  |
Net revenue | 3,604,965 | 3,200,809 |  |
Cost of sales and services | (2,521,991) | (2,382,828) |  |
Gross profit | 1,082,974 | 817,981 |  |
Operating (expenses) income | (105,267) | 207,840 |  |
Financial income (expenses), net | (330,756) | (268,089) |  |
Income before income tax and social contribution | 646,951 | 757,732 |  |
Current and deferred income tax and social contribution | (216,649) | (254,378) |  |
Profit / (loss) for the period | R$ 430,302 | 503,354 |  |
Transnordestina logistica s.a [member] |  |  |  |
BasisOfConsolidationAndInvestmentsInSubsidiariesAndAffiliatesLineItems [Line Items] |  |  |  |
Equity interest (%) | 47.26% |  |  |
Current Assets |  |  |  |
Cash and cash equivalents | R$ 1,390 | 17,166 |  |
Advances to suppliers | 1,948 | 3,240 |  |
Other current assets | 51,793 | 59,405 |  |
Total current assets | 55,131 | 79,811 |  |
Noncurrent Assets |  |  |  |
Other non-current assets | 225,492 | 258,391 |  |
Investments, PP&E and intangible assets | 9,574,588 | 8,968,447 |  |
Total non-current assets | 9,800,080 | 9,226,838 |  |
Total Assets | 9,855,211 | 9,306,649 |  |
Current Liabilities |  |  |  |
Borrowings and financing | 241,029 | 103,877 |  |
Other current liabilities | 125,794 | 171,821 |  |
Total current liabilities | 366,823 | 275,698 |  |
Noncurrent Liabilities |  |  |  |
Borrowings and financing | 6,368,070 | 6,084,424 |  |
Other non-current liabilities | 665,653 | 430,603 |  |
Total non-current liabilities | 7,033,723 | 6,515,027 |  |
Total equity | 2,454,665 | 2,515,924 |  |
Total liabilities and shareholders' equity | 9,855,211 | 9,306,649 |  |
Net revenue | 35 |  |  |
Gross profit | 35 |  |  |
Operating (expenses) income | (42,108) | (18,077) |  |
Financial income (expenses), net | (19,186) | (18,386) |  |
Income before income tax and social contribution | (61,259) | (36,463) |  |
Profit / (loss) for the period | R$ (61,259) | (36,463) |  |
Equimac S.A [member] |  |  |  |
BasisOfConsolidationAndInvestmentsInSubsidiariesAndAffiliatesLineItems [Line Items] |  |  |  |
Equity interest (%) | 50.00% |  |  |
Current Assets |  |  |  |
Cash and cash equivalents | R$ 1,351 |  |  |
Other current assets | 2,356 |  |  |
Total current assets | 3,707 |  |  |
Noncurrent Assets |  |  |  |
Other non-current assets |  |  |  |
Investments, PP&E and intangible assets | 11,365 |  |  |
Total non-current assets | 11,365 |  |  |
Total Assets | 15,072 |  |  |
Current Liabilities |  |  |  |
Other current liabilities | 602 |  |  |
Total current liabilities | 602 |  |  |
Noncurrent Liabilities |  |  |  |
Total equity | 14,470 |  |  |
Total liabilities and shareholders' equity | 15,072 |  |  |
Net revenue | 2,308 |  |  |
Cost of sales and services | (2,386) |  |  |
Gross profit | (78) |  |  |
Operating (expenses) income | (576) |  |  |
Financial income (expenses), net | (4) |  |  |
Income before income tax and social contribution | (658) |  |  |
Profit / (loss) for the period | R$ (658) |  |  |
Ita Energetica [member] |  |  |  |
BasisOfConsolidationAndInvestmentsInSubsidiariesAndAffiliatesLineItems [Line Items] |  |  |  |
Equity interest (%) | 48.75% |  |  |
Current Assets |  |  |  |
Cash and cash equivalents | R$ 48,919 | 65,793 |  |
Advances to suppliers | 742 | 363 |  |
Other current assets | 89,521 | 15,955 |  |
Total current assets | 139,182 | 82,111 |  |
Noncurrent Assets |  |  |  |
Other non-current assets | 20,807 | 24,361 |  |
Investments, PP&E and intangible assets | 390,672 | 426,403 |  |
Total non-current assets | 411,479 | 450,764 |  |
Total Assets | 550,661 | 532,875 |  |
Current Liabilities |  |  |  |
Other current liabilities | 19,721 | 16,793 |  |
Total current liabilities | 19,721 | 16,793 |  |
Noncurrent Liabilities |  |  |  |
Other non-current liabilities | 15,900 | 16,550 |  |
Total non-current liabilities | 15,900 | 16,550 |  |
Total equity | 515,040 | 499,532 |  |
Total liabilities and shareholders' equity | 550,661 | 532,875 |  |
Net revenue | 173,426 | 163,048 |  |
Cost of sales and services | (74,048) | (83,129) |  |
Gross profit | 99,378 | 79,919 |  |
Operating (expenses) income | (67,885) | (62,660) |  |
Financial income (expenses), net | (764) | 1,183 |  |
Income before income tax and social contribution | 30,729 | 18,442 |  |
Current and deferred income tax and social contribution | (10,391) | (6,147) |  |
Profit / (loss) for the period | R$ 20,338 | 12,295 |  |
CBSI [member] |  |  |  |
Noncurrent Liabilities |  |  |  |
Net revenue |  | 267,436 |  |
Cost of sales and services |  | (233,830) |  |
Gross profit |  | 33,606 |  |
Operating (expenses) income |  | (12,328) |  |
Financial income (expenses), net |  | (1,460) |  |
Income before income tax and social contribution |  | 19,818 |  |
Current and deferred income tax and social contribution |  | (6,428) |  |
Profit / (loss) for the period |  | R$ 13,390 |  |

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