Commitments and Contingencies (Details 2) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Limited Life Partnerships
Approximate settlement values of noncontrolling interest	$ 125.0	$ 143.0
Joint Venture Mortgage and Indebtedness
Guarantees of Joint Venture Indebtedness:
Loan guarantee	190.8	84.9
Loan guarantees recoverable	$ 83.0	$ 38.6

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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant