Business Acquisition Contingent Consideration Amount Potential Cash Payment Additional Information

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- Definition

Amount represents the measurement criteria for determining the potential earn out cash payment.

+ Details

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- Definition

Increase in maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ Details

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Period Type:	instant

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ Details

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- Definition

Long term commitment terminated original amount

+ Details

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- Definition

Long Term Purchase Commitment Term

+ Details

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- Definition

LongTermPurchaseCommitmentTermBeforeTermination

+ Details

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- Definition

Amount represents the management fees that will be reduced

+ Details

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- Definition

The company's investment may take the form of the general partner or a limited partner, and the entities are structured such that each partner makes capital commitments that may be drawn down over the life of the partnership as investment opportunities are identified.

+ Details

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- Definition

Amount of potential cash payments that could result from the contingent consideration arrangement.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-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.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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 the amount of contractual guarantees to which the Company is obligated as of the balance sheet date.

+ References

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

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 45

-Paragraph 3, 8, 15

-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 460

-SubTopic 10

-Section 50

-Paragraph 5

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12201-110248

+ Details

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- Definition

Expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services. Costs of public relations and corporate promotions are typically considered to be marketing costs.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.4)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

+ Details

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Commitments And Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Undrawn capital commitments			$ 168.9		$ 136.4
Total committed support	36.0		36.0
Guarantor obligations, increase in maximum exposure, undiscounted	66.0		66.0
Support agreements, estimated value	1.0		1.0		2.0
Marketing expenses	(13.1)	(19.6)	(64.9)	(52.9)
CAGR required for contingent payment, percent			100.00%
Acquisition costs, contingent	500		500
Stadium sponsorship and naming rights [Member]
Marketing expenses	10.4
Long term commitment terminated original amount	120.0
Long Term Purchase Commitment Term Before Termination	10 years
Long Term Purchase Commitment Term	20 years
Powershares [Member] \| Maximum Amount [Member]
Business acquisition, cost of acquired entity, purchase price, total	500.0		500.0
Minimum [Member]
Business acquisition contingent consideration amount potential cash payment additional information			17.5
Annual Maximum, W.L. Ross [Member]
Acquisition costs, contingent	55		55
Powershares, 1st Breakpoint [Member]
CAGR required for contingent payment, percent			15.00%
Powershares, 2nd Breakpoint [Member]
CAGR required for contingent payment, percent			75.00%
Powershares, 3rd Breakpoint [Member]
CAGR required for contingent payment, percent			100.00%
Upper Powershares [Member]
Business acquisition contingent consideration amount potential cash payment additional information			300.0
Breakpoint Over 15% [Member]
Business acquisition contingent consideration amount potential cash payment additional information			5.0
Contingent Consideration Payment Measurement Base [Member]
Reduction of management fees			50
Acquisition Cost, Contingent, 2nd Breakpoint, Per Percent Over 75% [Member]
Business acquisition contingent consideration amount potential cash payment additional information			$ 8.0