SUBSEQUENT EVENT (Details Textuals) (BRL) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Apr. 14, 2011
Business Combination [Member] \| Banco Carrefour [Member]
Subsequent Event [Line Items]
Subsequent Event, Date	Apr. 14, 2011
Business Acquisition, Percentage of Voting Interests Acquired		49.00%
Purchase price		725
Business Combination [Member] \| Banco Carrefour [Member]
Subsequent Event [Line Items]
Subsequent Event, Date	Apr. 14, 2011
Business Acquisition, Percentage of Voting Interests Acquired		49.00%
Purchase price		725
Issuance of Equity [Member]
Subsequent Event [Line Items]
Subsequent Event, Date	Apr. 25, 2011
Stockholders' Equity, Reverse Stock Split	(i) a reverse split of our common and preferred shares in the proportion of one share issued per each 100 shares previously owned in order to adjust our stockholder base to reduce administrative costs and improve the efficiency of our book-entry system.
Stockholders' Equity Note, Stock Split	(ii) simultaneously a stock split of 100 newly shares issued per each one share resulting from the reverse split above.

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Percentage of voting equity interests acquired in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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Description of the stock split arrangement. Also provide the retroactive effect given by a stock split that occurs after the balance date but before the release of financial statements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 7
-Section B
-Paragraph 2, 15, 16
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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