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Assets and Liabilities in and Results of Discontinued Operations - Textual (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Dec. 31, 2007
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Option Contract, Annual Premium     15.00%
Option Contract, Exercisable     30.00%
Fair value, Derivative Asset, Noncurrent $ 5.1 $ 5.1  
Derivative, Loss (1.6)    
Derivative, Gain   $ 5.1  
Maximum [Member]
     
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Option Contract, Equity Opportunity     5.00%