Fair Value Disclosure (Details 3) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Assets
Loans	$ 18.6	$ 0.5
Carrying Value of Assets [Member]
Assets
Investment Funds	4.4	6.8
Loans	18.6	0.5
Liabilities
Recourse fixed rate debt	2,653.9	2,459.3
Recourse floating rate debt	491.7	342.5
Nonrecourse debt	157.8	217.2
Fair Value [Member]
Assets
Investment Funds	7.3	10.2
Loans	18.7	0.5
Liabilities
Recourse fixed rate debt	2,784.7	2,615.9
Recourse floating rate debt	487.5	341.5
Nonrecourse debt	$ 168.0	$ 233.0

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 investments accounted for under the cost method of accounting as of the balance sheet date.

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 6

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 325

-SubTopic 20

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6383815&loc=d3e39828-111592

Name:	us-gaap_CostMethodInvestmentsFairValueDisclosure
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant