Variable Interest Entities And Noncontrolling Interests (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2013
Joint_Ventures
Noncontrolling Interest [Line Items]    
Percentage of profits and cash flows receivable from joint ventures 50.00%  
Number Of Joint Ventures   2
Consolidated variable interest entities, assets $ 24.7 $ 66.4
Consolidated variable interest entities, liabilities 6.4 27.1
Valuation adjustment to the noncontrolling interest 1.6  
Real Estate [Member]
   
Noncontrolling Interest [Line Items]    
Consolidated variable interest entities, assets 20.4 56.8
Cash [Member]
   
Noncontrolling Interest [Line Items]    
Consolidated variable interest entities, assets $ 1.1 $ 4.7