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Schedule of changes in provisions for litigation (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | R$ 1,555,704 | R$ 1,606,713
Provision for litigations, additions | 272,306 | 278,349
Provision for litigations, reversals | (78,577) | (121,856)
Construction cost, additions/(rev.) | 8,434 | (7,075)
Additions to assets | 49,714 | 5,869
Settlement | (210,085) | (172,025)
Transfers/others | (131) | (34,271)
Provisions for legal claims, ending | 1,597,365 | 1,555,704
Tax [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 173,873 | 175,790
Provision for litigations, additions | 14,169 | 50,813
Provision for litigations, reversals | (1,417) | (49,381)
Construction cost, additions/(rev.) |  |
Additions to assets |  |
Settlement | (127) | (244)
Transfers/others | (5,383) | (3,105)
Provisions for legal claims, ending | 181,115 | 173,873
Tax [Member] | Cofins [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 107,148 | 104,284
Provision for litigations, additions | 4,123 | 2,864
Provision for litigations, reversals | (1,212) |
Construction cost, additions/(rev.) |  |
Additions to assets |  |
Settlement |  |
Transfers/others |  |
Provisions for legal claims, ending | 110,059 | 107,148
Tax [Member] | Others [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 66,725 | 71,506
Provision for litigations, additions | 10,046 | 47,949
Provision for litigations, reversals | (205) | (49,381)
Construction cost, additions/(rev.) |  |
Additions to assets |  |
Settlement | (127) | (244)
Transfers/others | (5,383) | (3,105)
Provisions for legal claims, ending | 71,056 | 66,725
Labors [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 596,248 | 673,062
Provision for litigations, additions | 94,845 | 102,315
Provision for litigations, reversals | (21,647) | (4,297)
Construction cost, additions/(rev.) |  |
Additions to assets |  |
Settlement | (105,777) | (145,228)
Transfers/others | 6,087 | (29,604)
Provisions for legal claims, ending | 569,756 | 596,248
Employee Benefits [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 52,401 | 86,297
Provision for litigations, additions | 4,685 | 11,439
Provision for litigations, reversals | (19,623) | (43,524)
Construction cost, additions/(rev.) |  |
Additions to assets |  |
Settlement | (761) | (783)
Transfers/others | 446 | (1,028)
Provisions for legal claims, ending | 37,148 | 52,401
Civil [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 644,483 | 591,756
Provision for litigations, additions | 137,913 | 102,827
Provision for litigations, reversals | (29,919) | (23,621)
Construction cost, additions/(rev.) | 8,434 | (7,075)
Additions to assets | 49,714 | 5,869
Settlement | (103,153) | (24,739)
Transfers/others | (1,281) | (534)
Provisions for legal claims, ending | 706,191 | 644,483
Civil [Member] | Civil And Administrative Claims [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 387,895 | 336,962
Provision for litigations, additions | 129,730 | 94,500
Provision for litigations, reversals | (9,218) | (20,581)
Construction cost, additions/(rev.) |  |
Additions to assets |  |
Settlement | (74,989) | (22,452)
Transfers/others | 19 | (534)
Provisions for legal claims, ending | 433,437 | 387,895
Civil [Member] | Easements [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 111,553 | 127,010
Provision for litigations, additions | 1,616 | 286
Provision for litigations, reversals |  | (543)
Construction cost, additions/(rev.) | 15,702 | (13,748)
Additions to assets | 36,771 | 667
Settlement | (27,573) | (2,119)
Transfers/others |  |
Provisions for legal claims, ending | 138,069 | 111,553
Civil [Member] | Expropriations And Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 133,888 | 118,757
Provision for litigations, additions | 680 | 4,634
Provision for litigations, reversals | (15,031) | (1,217)
Construction cost, additions/(rev.) | (7,268) | 6,673
Additions to assets | 12,943 | 5,202
Settlement | (184) | (161)
Transfers/others |  |
Provisions for legal claims, ending | 125,028 | 133,888
Civil [Member] | Customers [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 3,973 | 4,956
Provision for litigations, additions | 895 | 299
Provision for litigations, reversals | (706) | (1,275)
Construction cost, additions/(rev.) |  |
Additions to assets |  |
Settlement | (407) | (7)
Transfers/others |  |
Provisions for legal claims, ending | 3,755 | 3,973
Civil [Member] | Environmental [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 7,174 | 4,071
Provision for litigations, additions | 4,992 | 3,108
Provision for litigations, reversals | (4,964) | (5)
Construction cost, additions/(rev.) |  |
Additions to assets |  |
Settlement |  |
Transfers/others | (1,300) |
Provisions for legal claims, ending | 5,902 | 7,174
Regulatory [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Provisions for legal claims, beginning | 88,699 | 79,808
Provision for litigations, additions | 20,694 | 10,955
Provision for litigations, reversals | (5,971) | (1,033)
Construction cost, additions/(rev.) |  |
Additions to assets |  |
Settlement | (267) | (1,031)
Transfers/others |  |
Provisions for legal claims, ending | R$ 103,155 | R$ 88,699

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