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Taxes to Recover - Summary of Recoverable Taxes (Detail) - BRL (R$) R$ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2017
Summary of recoverable taxes [line items]
Recoverable taxes	R$ 1,386,879	R$ 899,654
Current	639,699	664,954	R$ 382,361
Non-current	747,180	234,700
ICMS [member]
Summary of recoverable taxes [line items]
Recoverable taxes	710,669	580,630
Provision for icms losses [member]
Summary of recoverable taxes [line items]
Recoverable taxes	(99,187)	(72,076)
PIS and COFINS [member]
Summary of recoverable taxes [line items]
Recoverable taxes	720,731	348,333
Value Added Tax [member]
Summary of recoverable taxes [line items]
Recoverable taxes	31,678	27,180
Others [member]
Summary of recoverable taxes [line items]
Recoverable taxes	R$ 22,988	R$ 15,587

X

- Definition

The current amount of current tax assets. [Refer: Current tax assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The non-current amount of current tax assets. [Refer: Current tax assets]

+ References

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- Definition

The excess of amount paid for current tax in respect of current and prior periods over the amount due for those periods. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period.

+ References

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Summary of recoverable taxes.

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