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INVENTORIES - Changes in net realizable value of inventories (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for adjustment to net realizable value of inventories
Balance at the beginning of the year	R$ (13,704)
Balance at the end of the year	(39,308)	R$ (13,704)
Inventories
Allowance for adjustment to net realizable value of inventories
Balance at the beginning of the year	(13,704)	(3,556)	R$ (28,813)
Provision for the year	(46,693)	(11,943)	(26,545)
Reversal of adjustment to net realizable value	22,028	3,715	46,740
Loss of control by joint venture creation			392
Assets held for sale		1,049	881
Exchange rate variation	(939)	(871)	3,789
Balance at the end of the year	R$ (39,308)	R$ (13,704)	R$ (3,556)

X

- Definition

The amount of inventory provision to adjust to net realizable value.

+ References

No definition available.

+ Details

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- Definition

The decrease in an allowance account for inventories adjustment to net realizable value resulting from the loss of control in a joint venture.

+ References

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- Definition

The decrease in allowance for inventories adjustment to net realizable value through transfer to assets held for sale.

+ References

No definition available.

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- Definition

The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions]

+ References

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- Definition

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- Definition

The amount reversed for unused other provisions. [Refer: Other provisions]

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