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23 Post-employment Benefits (Details 11) R$ in Thousands	12 Months Ended
	Dec. 31, 2020 BRL (R$)
2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	R$ 858,912
2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	838,980
2022 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	815,238
2023 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	790,598
2024 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	766,390
2026 a 2050 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	8,248,754
Unified Plan [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	589,819
Unified Plan [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	572,875
Unified Plan [member] | 2022 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	555,705
Unified Plan [member] | 2023 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	538,812
Unified Plan [member] | 2024 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	522,208
Unified Plan [member] | 2026 a 2050 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	5,119,047
Plan III [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	179,251
Plan III [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	173,696
Plan III [member] | 2022 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	167,961
Plan III [member] | 2023 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	162,277
Plan III [member] | 2024 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	156,810
Plan III [member] | 2026 a 2050 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	2,119,296
Assistance Plan [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	89,842
Assistance Plan [member] | 2021 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	92,409
Assistance Plan [member] | 2022 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	91,572
Assistance Plan [member] | 2023 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	89,509
Assistance Plan [member] | 2024 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	87,372
Assistance Plan [member] | 2026 a 2050 [member]
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	R$ 1,010,411

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No definition available.

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- Definition

The amount of benefits paid or payable for retirement benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 26
-IssueDate 2020-01-01
-Paragraph 35
-Subparagraph b
-Clause v
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=26&code=ifrs-tx-2020-en-r&anchor=para_35_b_v&doctype=Standard
-URIDate 2020-01-01

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