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Estimates and judgments (Details Text) R$ in Thousands	12 Months Ended
	Dec. 31, 2017 BRL (R$)
Estimates And Judgments Details Text [Abstract]
Probability of default (PD)	10.00%
Increased the allowance for impairment	R$ 503,667

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- Definition

Estimates and judgments (Details Text)

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Probability of default (PD)

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Probability of default (PD) - Increased the allowance for impairment

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No definition available.

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