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Schedule of deferred income tax and social contribution (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | R$ 3,256,110 | [1] | R$ 1,883,765
Movement in profit or loss | [1] | 104,532 |  | 170,604
Deferred tax asset/liability, ending | [1] | 4,569,011 |  | 3,256,110
Movement in shareholders' equity |  | 2,073,437 |  | (59,380)
Increase (decrease) in deferred tax liability (asset) |  | (1,181) |  | 5,029
Total deferred assets |  | 3,874,946 |  | 2,473,304
Deferred tax assets |  | 5,072,092 |  | 3,874,946
Deferred tax liabilities |  | (618,836) |  | (589,539)
Deferred tax liabilities |  | (503,081) |  | (618,836)
Deferred Income Tax Losses [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | 1,848,999 |  | 1,610,801
Movement in profit or loss |  | (311,376) |  | 238,198
Deferred tax asset/liability, ending |  | 1,537,623 |  | 1,848,999
Deferred Social Contribution Tax Losses [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | 688,208 |  | 610,046
Movement in profit or loss |  | (104,363) |  | 78,162
Deferred tax asset/liability, ending |  | 583,845 |  | 688,208
Temporary Differences [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | 718,903 |  | (337,082)
Movement in profit or loss |  | (343,616) |  | 1,110,336
Deferred tax asset/liability, ending |  | 2,447,543 |  | 718,903
Movement in shareholders' equity |  | 2,073,437 |  | (59,380)
Increase (decrease) in deferred tax liability (asset) |  | (1,181) |  | 5,029
Provision For Tax Social Security Labor Civil And Environmental Risks [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | 279,149 |  | 264,013
Movement in profit or loss |  | (13,821) |  | 15,136
Deferred tax asset/liability, ending |  | 265,328 |  | 279,149
Assets Impairment Losses [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | 161,016 |  | 182,431
Movement in profit or loss |  | 122,250 |  | (26,444)
Deferred tax asset/liability, ending |  | 283,266 |  | 161,016
Increase (decrease) in deferred tax liability (asset) |  |  |  | 5,029
Gains Losses On Financial Instruments [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | 5,027 |  | 414,495
Movement in profit or loss |  | 1,457 |  | (409,468)
Deferred tax asset/liability, ending |  | 6,484 |  | 5,027
Actuarial Liability Pension And Healthcare Plan [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | 262,457 |  | 314,601
Movement in profit or loss |  | 13,571 |  | (7,412)
Deferred tax asset/liability, ending |  | 210,009 |  | 262,457
Movement in shareholders' equity |  | (66,019) |  | (44,732)
Accrued Supplies And Services [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | 154,452 |  | 132,411
Movement in profit or loss |  | 9,168 |  | 22,041
Deferred tax asset/liability, ending |  | 163,620 |  | 154,452
Unrealized Exchange Differences [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred | [1] | 2,744,910 |  | 2,774,085
Movement in profit or loss | [1] | (1,718,608) |  | (29,175)
Deferred tax asset/liability, ending | [1] | 1,026,302 |  | 2,744,910
Gain Upon Loss Of Control In Transnordestina [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | (92,180) | [1] | (92,180)
Deferred tax asset/liability, ending | [1] | (92,180) |  | (92,180)
Cash Flow Hedge Accounting [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | 1,742,800 | [1] | 426,961
Deferred tax asset/liability, ending | [1] | 1,959,557 |  | 1,742,800
Movement in shareholders' equity |  | 216,757 |  | 1,315,839
Acquisition Fair Value Swt Cbl [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | (212,015) | [1] | (184,513)
Movement in profit or loss | [1] | 25,926 |  | 30,149
Deferred tax asset/liability, ending | [1] | (178,160) |  | (212,015)
Movement in shareholders' equity |  | 7,929 |  | (57,651)
Deferred Taxes Non Computed [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | (317,927) | [1] | (291,961)
Movement in profit or loss | [1] | 69,322 |  | (25,966)
Deferred tax asset/liability, ending | [1] | (248,605) |  | (317,927)
Estimated Losses Reversals To Deferred Taxes Credits [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | (2,940,052) | [1] | (3,218,582)
Movement in profit or loss | [1] | 1,025,013 |  | 1,548,640
Deferred tax asset/liability, ending | [1] |  |  | (2,940,052)
Movement in shareholders' equity |  | 1,915,039 |  | (1,270,110)
Business Combination [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | (1,015,049) | [1] | (1,023,341)
Movement in profit or loss | [1] | (323,625) |  | 8,292
Deferred tax asset/liability, ending | [1] | (1,338,674) |  | (1,015,049)
Others [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Total deferred |  | (53,685) | [1] | (35,502)
Movement in profit or loss | [1] | 445,731 |  | (15,457)
Deferred tax asset/liability, ending | [1] | 390,596 |  | (53,685)
Movement in shareholders' equity |  | (269) |  | R$ (2,726)
Increase (decrease) in deferred tax liability (asset) |  | R$ (1,181) |  |
[1] | The Company taxes exchange variations on a cash basis to calculate income tax and social contribution on net income.

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