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26 EMPLOYEE BENEFITS (Details 5) - Benefits of Pension Plans [Member] - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
EmployeeBenefitsLineItems [Line Items]
Actuarial losses and (gains)	R$ 477,316	R$ (15,224)	R$ 166,540
Return on plan assets (less interest income)	(444,348)	(51,213)	(36,627)
Change in the asset's limit (excluding interest income)	73,039	50,058	(97,882)
Total cost of actuarial losses and (gains)	106,007	(16,379)	32,031
Actuarial losses and (gains) recognized in other comprehensive income			32,037
Unrecognized actuarial (gains)			(6)
Total cost of actuarial losses and (gains)	R$ 106,007	R$ (16,379)	R$ 32,031

X

- Definition

The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2019-01-01
-Paragraph 141
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_c&doctype=Standard
-URIDate 2019-03-27

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X

- Definition

The decrease (increase) in the net defined benefit liability (asset) resulting from the return on plan assets, excluding amounts included in interest income or expense. The return on plans assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Plan assets [member]; Net defined benefit liability (asset); Actuarial assumptions [member]; Interest expense (income), net defined benefit liability (asset)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2019-01-01
-Paragraph 141
-Subparagraph c
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_c_i&doctype=Standard
-URIDate 2019-03-27

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X

- Definition

The amount refers to actuarial losses and (gains) unrecognized in other comprehensive income.

+ References

No definition available.

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- Definition

The amount refers to change in the asset’s limit (excluding interest income).

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- Definition

The amount refers to recognised gain loss on remeasurement of net defined benefit liability asset.

+ References

No definition available.

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- Definition

The amount refers to total cost of actuarial losses and (gains).

+ References

No definition available.

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