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Financial assets and liabilities held for trading (Details 2) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financial Assets Held For Trading Maturity [Abstract]
Maturity of up to one year	R$ 31,617,538	R$ 35,002,911
Maturity of one to five years	146,527,365	134,589,655
Maturity of five to 10 years	53,763,561	29,299,698
Maturity of over 10 years	2,409,723	6,537,358
Maturity not stated	7,391,854	7,710,224
Total	R$ 241,710,041	R$ 213,139,846

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- Definition

Financial assets held for trading - Maturity

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No definition available.

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- Definition

Financial assets held for trading - Maturity of five to 10 years

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- Definition

Financial assets held for trading - Maturity of one to five years

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- Definition

Financial assets held for trading - Maturity of over 10 years

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- Definition

Financial assets held for trading - Maturity of up to one year

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- Definition

Financial assets held for trading - No stated maturity

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- Definition

The amount of financial assets at fair value through profit or loss classified as held for trading. A financial asset is classified as held for trading if: (a) it is acquired principally for the purpose of selling it in the near term; (b) on initial recognition it is part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit-taking; or (c) it is a derivative (except for a derivative that is a financial guarantee contract or a designated and effective hedging instrument). [Refer: At fair value [member]; Financial assets at fair value through profit or loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2018-01-01
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 8
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_8_a&doctype=Standard&book=B
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard
-URIDate 2017-03-09

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