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32. Events after the reporting period (Details Narrative) - 22nd Issue Debentures R$ in Thousands	Feb. 19, 2018 BRL (R$)
DisclosureOfEventsAfterReportingPeriodLineItems [Line Items]
Unsecured non-convertible debentures	R$ 750,000
First series
DisclosureOfEventsAfterReportingPeriodLineItems [Line Items]
Unsecured non-convertible debentures	100,000
Second series
DisclosureOfEventsAfterReportingPeriodLineItems [Line Items]
Unsecured non-convertible debentures	400,000
Third series
DisclosureOfEventsAfterReportingPeriodLineItems [Line Items]
Unsecured non-convertible debentures	R$ 250,000

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- References

No definition available.

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- Definition

Unsecured nonconvertible debentures

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No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Details

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- Details

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- Details

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- Details

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