Acquisitions/Dispositions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 FirstAgain,LLC [Member]	Dec. 31, 2011 CSI Capital Management [Member]	Dec. 31, 2010 Money Market Funds [Member]
Business Acquisition [Line Items]
Significant Acquisitions and Disposals, Type			Acquisition of assets of FirstAgain, LLC	Acquisition of certain additional assets of CSI Capital Management	Disposition of certain money market fund management business
Acquisitions And Disposals Date Of Transaction For Acquisition Or Disposal			6/22/2012	5/9/2011	various
Payments for (Proceeds from) Businesses and Interest in Affiliates			$ (12)	$ (19)	$ 7
Goodwill, Acquired During Period	32	20	32	20	0
Finite-lived Intangible Assets Acquired			0	7	11
Gain Loss On Acquisitions And Disposals Of Business			$ 0	$ 0	$ 18
Acquisitions And Disposals Additional Comments			Goodwill recorded is tax-deductible.	Goodwill and intangibles recorded are tax-deductible.

Acquisitions and Disposals, Additional Comments

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- Definition

Acquisitions and Disposals, Date of Transaction for Acquisition or Disposal

+ References

No definition available.

+ Details

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- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance with a finite life acquired.

+ References

No definition available.

+ Details

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- Definition

Amount of the excess of the fair value of acquired net assets over the cost of an acquired business after pro rata reduction of the amounts that otherwise would have been assigned to acquired assets except financial assets other than investments accounted for by the equity method, assets to be disposed of by sale, deferred tax assets, prepaid assets relating to pension and postretirement benefit plans, and other current assets. This amount is considered an extraordinary item and often referred to as negative goodwill. This element is gross of the related tax effect.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 44, 45, 46

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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- Definition

The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 72

-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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph e

-Clause 2

-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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- Definition

The net cash outflow or inflow associated with the acquisition or sale of a business segment during the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 15, 16, 17

-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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- Definition

A single word or group of words that defines whether a transaction is an acquisition or a disposal.

+ References

No definition available.

+ Details

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