For an unclassified balance sheet, this item represents investments in debt and equity securities which are categorized neither as held-to-maturity nor trading.

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+ Details

- Definition

The total of financial instruments that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for debt and equity securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Trading Securities
-URI http://asc.fasb.org/extlink&oid=6526789

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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+ Details

- Definition

Debt securities that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for debt securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Trading Securities
-URI http://asc.fasb.org/extlink&oid=6526789

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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+ Details

- Definition

Total common and preferred stock (which is not mandatorily redeemable, redeemable at the option of the holder, or in any other way classified as liability) equity securities that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for equity securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Trading Securities
-URI http://asc.fasb.org/extlink&oid=6526789

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+ Details

- Definition

Total investments, other than debt and equity securities, that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time).

+ References+ Details

FAIR VALUE MEASUREMENTS AND ADDITIONAL DISCLOSURES ON FAIR VALUE HIERARCHY (Details) (BRL) In Millions	Dec. 31, 2010	Apr. 01, 2010	Dec. 31, 2009
Trading Securities [Line Items]
Trading assets, at fair value	140,003		73,529
Available-for-sale securities, at fair value	44,636		41,263
Investment Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Derivative financial instruments	0		0
Available-for-sale securities, at fair value	21,498		17,179
Foreign Government Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Trading securities	9,036		937
Available-for-sale securities, at fair value	679		17
Foreign Government Debt Securities Argentina [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Trading securities	293		179
Foreign Government Debt Securities United States [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Trading securities	8,714		748
Available-for-sale securities, at fair value	679		17
Foreign Government Debt Securities Mexico [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Trading securities	29		10
Foreign Government Debt Securities Russia [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Foreign Government Debt Securities Chile [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Available-for-sale securities, at fair value	0		0
Foreign Government Debt Securities Uruguay [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Available-for-sale securities, at fair value	0		0
Foreign Government Debt Securities Other [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Trading securities	2,461		815
Available-for-sale securities, at fair value	4,205		804
Marketable Equity Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Marketable equity securities	1,825		1,139
Available-for-sale securities, at fair value	1,373		280
Derivative [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Derivative financial instruments	0		0
Options Held [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Derivative financial instruments	0		0
Forward Contracts [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Derivative financial instruments	0		0
Swap [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Derivative financial instruments	0		0
Credit Derivatives [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Derivative financial instruments	0		0
Other Derivatives [Member] \| Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Derivative financial instruments	0		0
Fair Value, Inputs, Level 1 [Member]
Trading Securities [Line Items]
Trading assets, at fair value	83,589		26,685
Available-for-sale securities, at fair value	21,498		17,179
Fair Value, Inputs, Level 1 [Member] \| Domestic Government Securities [Member]
Trading Securities [Line Items]
Trading securities	69,600	23,572	23,572
Available-for-sale securities, at fair value	10,523		14,098
Fair Value, Inputs, Level 1 [Member] \| Domestic Government External Debt Securities [Member]
Trading Securities [Line Items]
Trading securities	667		222
Available-for-sale securities, at fair value	4,718		1,980
Fair Value, Inputs, Level 1 [Member] \| Foreign Government Debt Securities Portugal [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 1 [Member] \| Foreign Government Debt Securities Austria [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 1 [Member] \| Foreign Government Debt Securities Denmark [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 1 [Member] \| Foreign Government Debt Securities Spain [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 1 [Member] \| Foreign Government Debt Securities Paraguay [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 1 [Member] \| Foreign Government Debt Securities Korea [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Investment Funds [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Derivative financial instruments	47,304		39,347
Available-for-sale securities, at fair value	21,492		22,013
Foreign Government Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Trading securities	317		121
Available-for-sale securities, at fair value	3,880		7,226
Foreign Government Debt Securities Argentina [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Foreign Government Debt Securities United States [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Available-for-sale securities, at fair value	0		0
Foreign Government Debt Securities Mexico [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Foreign Government Debt Securities Russia [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Trading securities	45		0
Foreign Government Debt Securities Chile [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Trading securities	248		77
Available-for-sale securities, at fair value	453		1,274
Foreign Government Debt Securities Uruguay [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Trading securities	24		30
Available-for-sale securities, at fair value	185		475
Foreign Government Debt Securities Other [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Trading securities	0		14
Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Trading securities	786		1,320
Available-for-sale securities, at fair value	16,842		14,425
Marketable Equity Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Marketable equity securities	0		3
Available-for-sale securities, at fair value	0		1,092
Derivative [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Derivative financial instruments	7,292		5,121
Options Held [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Derivative financial instruments	1,684		1,641
Forward Contracts [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Derivative financial instruments	2,060		378
Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Derivative financial instruments	2,982		2,665
Credit Derivatives [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Derivative financial instruments	0		0
Other Derivatives [Member] \| Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Derivative financial instruments	566		437
Fair Value, Inputs, Level 2 [Member]
Trading Securities [Line Items]
Trading assets, at fair value	55,760		46,325
Available-for-sale securities, at fair value	21,492		22,013
Fair Value, Inputs, Level 2 [Member] \| Domestic Government Securities [Member]
Trading Securities [Line Items]
Trading securities	61	413	413
Available-for-sale securities, at fair value	0		11
Fair Value, Inputs, Level 2 [Member] \| Domestic Government External Debt Securities [Member]
Trading Securities [Line Items]
Trading securities	0		0
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 2 [Member] \| Foreign Government Debt Securities Portugal [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		26
Fair Value, Inputs, Level 2 [Member] \| Foreign Government Debt Securities Austria [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		213
Fair Value, Inputs, Level 2 [Member] \| Foreign Government Debt Securities Denmark [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	2,016		1,971
Fair Value, Inputs, Level 2 [Member] \| Foreign Government Debt Securities Spain [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	734		1,093
Fair Value, Inputs, Level 2 [Member] \| Foreign Government Debt Securities Paraguay [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	256		417
Fair Value, Inputs, Level 2 [Member] \| Foreign Government Debt Securities Korea [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	236		1,757
Investment Funds [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Derivative financial instruments	0		0
Available-for-sale securities, at fair value	1,646		2,071
Foreign Government Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Available-for-sale securities, at fair value	0		0
Foreign Government Debt Securities Argentina [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Foreign Government Debt Securities United States [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Available-for-sale securities, at fair value	0		0
Foreign Government Debt Securities Mexico [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Foreign Government Debt Securities Russia [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Foreign Government Debt Securities Chile [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Available-for-sale securities, at fair value	0		0
Foreign Government Debt Securities Uruguay [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Available-for-sale securities, at fair value	0		0
Foreign Government Debt Securities Other [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Trading securities	0		0
Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Trading securities	157		91
Available-for-sale securities, at fair value	1,326		1,737
Marketable Equity Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Marketable equity securities	0		0
Available-for-sale securities, at fair value	0		0
Derivative [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Derivative financial instruments	497		428
Options Held [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Derivative financial instruments	68		178
Forward Contracts [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Derivative financial instruments	0		0
Swap [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Derivative financial instruments	5		235
Credit Derivatives [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Derivative financial instruments	261		15
Other Derivatives [Member] \| Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Derivative financial instruments	163		0
Fair Value, Inputs, Level 3 [Member]
Trading Securities [Line Items]
Trading assets, at fair value	654		519
Available-for-sale securities, at fair value	1,646		2,071
Fair Value, Inputs, Level 3 [Member] \| Domestic Government Securities [Member]
Trading Securities [Line Items]
Trading securities	0	0	0
Available-for-sale securities, at fair value	320		334
Fair Value, Inputs, Level 3 [Member] \| Domestic Government External Debt Securities [Member]
Trading Securities [Line Items]
Trading securities	0		0
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 3 [Member] \| Foreign Government Debt Securities Portugal [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 3 [Member] \| Foreign Government Debt Securities Austria [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 3 [Member] \| Foreign Government Debt Securities Denmark [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 3 [Member] \| Foreign Government Debt Securities Spain [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 3 [Member] \| Foreign Government Debt Securities Paraguay [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Fair Value, Inputs, Level 3 [Member] \| Foreign Government Debt Securities Korea [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		0
Investment Funds [Member]
Trading Securities [Line Items]
Derivative financial instruments	47,304		39,347
Available-for-sale securities, at fair value	770		1,259
Domestic Government Securities [Member]
Trading Securities [Line Items]
Trading securities	69,661		23,985
Available-for-sale securities, at fair value	10,843		14,443
Domestic Government External Debt Securities [Member]
Trading Securities [Line Items]
Trading securities	667		222
Available-for-sale securities, at fair value	4,718		1,980
Foreign Government Debt Securities [Member]
Trading Securities [Line Items]
Trading securities	9,353		1,058
Available-for-sale securities, at fair value	4,559		7,243
Foreign Government Debt Securities Argentina [Member]
Trading Securities [Line Items]
Trading securities	293		179
Foreign Government Debt Securities United States [Member]
Trading Securities [Line Items]
Trading securities	8,714		748
Available-for-sale securities, at fair value	679		17
Foreign Government Debt Securities Mexico [Member]
Trading Securities [Line Items]
Trading securities	29		10
Foreign Government Debt Securities Russia [Member]
Trading Securities [Line Items]
Trading securities	45		0
Foreign Government Debt Securities Chile [Member]
Trading Securities [Line Items]
Trading securities	248		77
Available-for-sale securities, at fair value	453		1,274
Foreign Government Debt Securities Uruguay [Member]
Trading Securities [Line Items]
Trading securities	24		30
Available-for-sale securities, at fair value	185		475
Foreign Government Debt Securities Other [Member]
Trading Securities [Line Items]
Trading securities	0		14
Corporate Debt Securities [Member]
Trading Securities [Line Items]
Trading securities	3,404		2,226
Available-for-sale securities, at fair value	22,373		14,966
Marketable Equity Securities [Member]
Trading Securities [Line Items]
Marketable equity securities	1,825		1,142
Available-for-sale securities, at fair value	1,373		1,372
Derivative [Member]
Trading Securities [Line Items]
Derivative financial instruments	7,789		5,549
Options Held [Member]
Trading Securities [Line Items]
Derivative financial instruments	1,752		1,819
Swap [Member]
Trading Securities [Line Items]
Derivative financial instruments	2,987		2,900
Credit Derivatives [Member]
Trading Securities [Line Items]
Derivative financial instruments	261		15
Forward Contracts [Member]
Trading Securities [Line Items]
Derivative financial instruments	2,060		378
Other Derivatives [Member]
Trading Securities [Line Items]
Derivative financial instruments	729		437
Foreign Government Debt Securities Portugal [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		26
Foreign Government Debt Securities Austria [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	0		213
Foreign Government Debt Securities Denmark [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	2,016		1,971
Foreign Government Debt Securities Spain [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	734		1,093
Foreign Government Debt Securities Paraguay [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	256		417
Foreign Government Debt Securities Korea [Member]
Trading Securities [Line Items]
Available-for-sale securities, at fair value	236		1,757