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Schedule of capital monitored by index (Details) - BRL (R$) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
IfrsStatementLineItems [Line Items] |  |  |
Less: Cash and cash equivalents | R$ 3,472,845,000 | R$ 3,222,768 |
Net income | 5,048,602,000 | 3,909,750,000 | R$ 2,062,869,000
Deferred IRPJ and CSLL | 790,406,000 | 24,896,000 | 258,974,000
Provision for IRPJ and CSLL | 469,226,000 | 1,260,469,000 | 416,687,000
Depreciation and amortization | 1,082,539,000 | 1,009,912,000 | R$ 950,726,000
Capital Management [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Loans and financing | 3,678,444,000 | 3,188,531,000 |
Debentures | 8,147,617,000 | 6,757,481,000 |
Less: Cash and cash equivalents | (3,472,845,000) | (3,222,768,000) |
Less: Bonds and securities (current) | (16,121,000) | (1,465,000) |
Less: Bonds and securities (noncurrent) - debt contract guarantees | (237,183,000) | (175,901,000) |
Less: Collaterals and escrow accounts STN | (142,764,000) | (133,521,000) |
Adjusted net debt | 7,957,148,000 | 6,412,357,000 |
Net income | 3,859,045,000 | 3,834,172,000 |
Equity in earnings of investees | (366,314,000) | (193,547,000) |
Deferred IRPJ and CSLL | 790,406,000 | 24,896,000 |
Provision for IRPJ and CSLL | 469,226,000 | 1,260,469,000 |
Financial expenses (income), net | 327,361,000 | (866,271,000) |
Depreciation and amortization | 1,082,539,000 | 1,009,913,000 |
Ebitda from discontinued operations | 1,872,381,000 | 259,560,000 |
Adjusted ebitda | R$ 8,034,644,000 | R$ 5,329,192,000 |
Adjusted net debt / Ebitda (in R$ per share) | R$ 0.99 | R$ 1.20 |

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