DERIVATIVE FINANCIAL INSTRUMENTS AND FINANCIAL INSTRUMENTS RELATED TO CREDIT (Details Textuals) (BRL) In Millions	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009
Schedule of Trading Securities and Other Trading Assets [Line Items]
Carrying Amount Of Cash Flow Hedge Instruments	14
Notional Amount of Cash Flow Hedge Instruments	11
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	1
Long-term Line of Credit	5,967	5,907
Swap [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Maximum Potential Future Exposure on Credit Risk Derivatives	2,012	1,674
Purchase Options [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Maximum Potential Future Exposure on Credit Risk Derivatives	828	975
Standby Letters of Credit [Member] \| Clients Under Monitoring [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Long-term Line of Credit	17	8
Standby Letters of Credit [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Long-term Line of Credit	756	1,207

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum amount the entity would be obligated to pay on the credit risk derivatives upon occurrence of a credit event.

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