Variable Interest Entities (Details) (USD $) In Millions	3 Months Ended	6 Months Ended
Jun. 30, 2011	Sep. 30, 2010	Jun. 30, 2011	Dec. 31, 2010
Variable Interest Entities (Textuals) [Abstract]
Interests in borrowers qualifying as variable interest entities	$ 359.7		$ 359.7	$ 493.7
Maximum exposure to loss as a result of our involvement with bowrrowers qualifying as VIEs	452.8		452.8	610.6
Total outstanding balances of commercial term debt securitizations	721.4		721.4	1,000.0
Notes and certificates held by company included in commercial term debt securitizations	310.8		310.8	328.2
Sold equity interest and certain notes issued by the 2006-A Trust		7.0
Removal of carrying amounts of loans due to deconsolidation of trust from our consolidated balance sheet		801.9
Removal of carrying amounts of restricted cash due to deconsolidation of trust from our consolidated balance sheet		55.7
Removal of carrying amounts of term debt due to deconsolidation of trust from our consolidated balance sheet		891.3
Gain on deconsolidation of 2006-A Trust		16.7
Fair value of beneficial interests of the 2006-A trust repurchased the market	20.4		20.4
Fair value of guarantee to swap counterparty	13.8		13.8
Gain recognized on sale of certain interests in 2006-A Trust			13.3
Gross unrealized gains included as component of other comprehensive income on securities held in trust on balance sheet date	1.9		10.2
Carrying amounts of the consolidated liabilities related to the securitization issuers	411.1		411.1	697.5
Carrying amounts of the consolidated assets related to the securitization issuers	$ 679.9		$ 679.9	$ 901.9

Carrying amounts of the consolidated assets related to the securitization issuers.

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- Definition

Carrying amounts of the consolidated liabilities related to the securitization issuers.

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Fair value of beneficial interests of the 2006-A trust repurchased the market.

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The fair value of a guarantee to a swap counterparty, representing only form of financial support to a deconsolidated securitization trust.

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- Definition

Gain Loss recognized on sale of certain interests in securitization trust.

+ Details

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- Definition

Interests in borrowers qualifying as variable interest entities.

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- Definition

Notes and certificates held by company included in commercial term debt securitizations

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- Definition

Total outstanding balances of commercial term debt securitizations.

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- Definition

Removal of carrying amounts of loans due to deconsolidation of securitization trust.

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- Definition

Removal of carrying amounts of restricted cash due to deconsolidation of securitization trust.

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- Definition

Removal of carrying amounts of term debt due to deconsolidation of securitization trust.

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- Definition

Unrealized Gain Loss included as component of Other Comprehensive Income on securities held in securitization trust on balance sheet date.

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Variable Interest Entities.

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The amount of the gain (loss) recognized by the parent and included in its attributable portion of net income for the period due to deconsolidation of a subsidiary or derecognition of a group of assets. The gain (loss) recognized and included in the net income attributable to the parent for the period is generally computed as the difference between: (a) the aggregate of: (1) the fair value of any consideration received; (2) the fair value of any retained noncontrolling investment in the former subsidiary at the date the subsidiary was deconsolidated; and (3) the carrying amount of any noncontrolling interest in the former subsidiary (including any accumulated other comprehensive income attributable to the noncontrolling interest) at the date the subsidiary was deconsolidated and (b) the carrying amount of the former subsidiary's assets and liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
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-Paragraph 36
-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 cash inflow associated with the amount received from the sale of a business segment or subsidiary or sale of an entity that is related to it but not strictly controlled during the period (for example, an unconsolidated subsidiary, affiliate, joint venture or equity method investment).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 15, 16
-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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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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