Credit spread, used as an input to measure fair value.

No definition available.

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- Definition

Market valuation based on a multiple of earnings before interest, taxes, depreciation and amortization (i.e., EBITDA), used as an input to measure fair value.

+ References

No definition available.

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- Definition

Discount based upon experience with actual liquidation values.

+ References

No definition available.

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- Definition

Level 3 liabilities as a percentage of total firm liabilities at fair value.

+ References

No definition available.

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- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

No definition available.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph b

-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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

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- Definition

Amount of gain (loss) recognized in earnings, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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- Definition

Amount of gain (loss) recognized in other comprehensive income, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1a)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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- Definition

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.4)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 4

-Article 9

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Fair Value Measurement - Supplemental Caption Data (Details 1a) (USD $) In Millions, unless otherwise specified				12 Months Ended																				0 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Private Equity Funds [Member]	Dec. 31, 2011 Private Equity Funds [Member]	Dec. 31, 2010 Private Equity Funds [Member]	Dec. 31, 2012 Available-for-sale Securities [Member]	Dec. 31, 2011 Available-for-sale Securities [Member]	Dec. 31, 2010 Available-for-sale Securities [Member]	Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member]	Dec. 31, 2011 Fair Value, Measurements, Nonrecurring [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Collateralized Loan Obligations [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Collateralized Loan Obligations [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurements, Nonrecurring [Member]	Dec. 31, 2011 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurements, Nonrecurring [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurements, Nonrecurring [Member] Residential Mortgage [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2011 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurements, Recurring [Member] Credit Derivatives with Underlying Mortgage Risk [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurements, Recurring [Member] Collateralized Loan Obligations [Member]	Dec. 31, 2011 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurements, Recurring [Member] Collateralized Loan Obligations [Member]	Dec. 31, 2012 Discounted Cash Flows Valuation Technique [Member] Minimum [Member] Corporate debt securities, obligations of U.S. states and municipalities, and other [Member]	Dec. 31, 2012 Discounted Cash Flows Valuation Technique [Member] Minimum [Member] Collateralized Loan Obligations [Member]	Dec. 31, 2012 Discounted Cash Flows Valuation Technique [Member] Maximum [Member] Corporate debt securities, obligations of U.S. states and municipalities, and other [Member]	Dec. 31, 2012 Discounted Cash Flows Valuation Technique [Member] Maximum [Member] Collateralized Loan Obligations [Member]	Dec. 31, 2012 Discounted Cash Flows Valuation Technique [Member] Weighted Average [Member] Corporate debt securities, obligations of U.S. states and municipalities, and other [Member]	Dec. 31, 2012 Discounted Cash Flows Valuation Technique [Member] Weighted Average [Member] Collateralized Loan Obligations [Member]	Dec. 31, 2012 Broker Price Opinion Valuation Technique [Member] Minimum [Member] Residential Mortgage [Member]	Dec. 31, 2012 Broker Price Opinion Valuation Technique [Member] Maximum [Member] Residential Mortgage [Member]	Dec. 31, 2012 Broker Price Opinion Valuation Technique [Member] Weighted Average [Member] Residential Mortgage [Member]	Dec. 31, 2012 Private Equity Direct Investments [Member] Market Comparables Valuation Technique [Member] Minimum [Member] Private Equity Funds [Member]	Dec. 31, 2012 Private Equity Direct Investments [Member] Market Comparables Valuation Technique [Member] Maximum [Member] Private Equity Funds [Member]	Dec. 31, 2012 Private Equity Direct Investments [Member] Market Comparables Valuation Technique [Member] Weighted Average [Member] Private Equity Funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Inputs, Credit Spread																								1.30%	1.30%	2.50%	6.00%	1.53%	1630000.00%
Assets, Fair Value Disclosure, Nonrecurring										$ 5,100	$ 5,300					$ 4,400	$ 4,900	$ 4,000
Available-for-sale Securities, Fair Value Disclosure														27,896	24,861				28,916	25,486		27,896	24,745
Trading Account Assets, Fair Value Disclosure												450,028	443,963						48,897	68,008	1,300	2,100
Level Three Liabilities As Percentage Of Total Firm Liabilities At Fair Value	19.00%	22.00%	23.00%
Realized gains and losses recorded in income on AFS securities				420	943	1,038	145	(240)	(66)
Unrealized gains and losses recorded in OCI on AFS securities							$ 45	$ 145	$ (129)
Fair Value Inputs, Liquidation Value Discount																														22.00%	66.00%	29.00%
Fair Value Inputs, EBITDA Multiple																																	2.7	14.6	8,300,000.0