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INVENTORIES - Changes in net realizable value of inventories (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for adjustment to net realizable value of inventories
Balance at the beginning of the year	R$ (3,556)
Balance at the end of the year	(13,704)	R$ (3,556)
Inventories
Allowance for adjustment to net realizable value of inventories
Balance at the beginning of the year	(3,556)	(28,813)	R$ (101,121)
Provision for the year	(11,943)	(26,545)	(62,899)
Reversal of adjustment to net realizable value	3,715	46,740	94,391
Loss of control by selling of subsidiary			30,105
Loss of control by joint venture creation		392
Assets held for sale	(1,049)	881
Exchange rate variation	(871)	3,789	10,711
Balance at the end of the year	R$ (13,704)	R$ (3,556)	R$ (28,813)

X

- Definition

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

+ References

No definition available.

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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

No definition available.

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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 subsidiary.

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- Definition

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

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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]

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The amount recognised for new other provisions. [Refer: Other provisions]

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- Definition

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

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