Total financial charges accrued on the outstanding principal of assets as at the reporting date.

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Total financial charges accrued on the outstanding principal of liabilities as at the reporting date.

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Maximum holding percentage in companies that are classified as cost method investments.

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Percentage of assigned premiums assured to local reinsurers on each cession of reinsurance.

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Range of holding percentage in unconsolidated companies for classification as equity method of accounting.

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Reduction in allowance for loans and leases due to change in methodology.

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The fair value of available-for-sale securities that serve as collateral for borrowings.

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The amount of the obligation to return cash collateral under master netting arrangements that have not been offset against net derivative instrument positions.

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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The carrying amount of held-to-maturity securities that serve as collateral for borrowings.

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The amount of cash or cash equivalents contributed during the reporting period by the entity to fund its pension plans and its non-pension postretirement benefit plans.

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The carrying value of funds outstanding loaned in the form of security resale agreements if the agreement requires the purchaser to resell the identical security purchased or a security that meets the definition of "substantially the same." Also includes purchases of participations in pools of securities that are subject to a resale agreement.

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The carrying value as of the balance sheet date of the assets received as collateral against securities loaned to other broker-dealers. Borrowers of securities generally are required to provide collateral to the lenders of securities, commonly cash but sometimes other securities or standby letters of credit, with a value slightly higher than that of the securities borrowed. In instances where the entity is permitted to sell or re-pledge these securities, the entity reports the fair value of the collateral received and the related obligation to return the collateral as a liability.

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The carrying value as of the balance sheet date of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. Most repos involve obligations of the federal government or its agencies, but other financial instruments, such as commercial paper, banker's acceptances, and negotiable certificates of deposit, are sometimes used in repos.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The fair value of trading securities that serve as collateral for borrowings.

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SIGNIFICANT ACCOUNTING POLICIES (Details Textuals) (BRL) In Millions, except Per Share data, unless otherwise specified	0 Months Ended	12 Months Ended
	Jan. 16, 2010	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Short-term Debt [Line Items]
Financial Charges Accrued On Outstanding Principal Of Assets		27,511	23,505
Financial Charges Accrued On Outstanding Principal Of Liabilities		39,250	29,701
Securities purchased under resale agreements		34,734	56,714
Securities sold under repurchase agreements		97,972	66,174
Derivative, Collateral, Obligation to Return Cash		49	46
Reductionin Allowance For Loans and Leases Due To Change In Methodology		935
Range Of Holding Percentage In Unconsolidated Companies For Classificationas Equity Method Of Accounting		20% and 50
Maximum Holding Percentage In Companies That Are Classified As Cost Method Investments		60.00%
Percentage Of Assigned Premiums Assured To Local Reinsurers On Each Cession Of Reinsurance	60.00%	40.00%
Pension and Other Postretirement Benefit Contributions		1,328	1,178	747
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Trading Securities Pledged as Collateral		54,793	6,336
Available-for-sale Securities Pledged as Collateral		8,826	3,019
Held-to-maturity Securities Pledged as Collateral		268	124
Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell [Member]
Short-term Debt [Line Items]
Securities Received as Collateral		23,070	51,853
Noncumulative Preferred Stock [Member]
Short-term Debt [Line Items]
Dividends Payable, Amount Per Share		0.022