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Chapter 11 Filing Chapter 11 Filing (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2014
Dec. 31, 2013
Chapter 11 Filing [Abstract]      
Convertible senior notes $ 530 $ 530  
Convertible Noteholders, Percent of New Common Stock 79.04% 79.04%  
Convertible Noteholders, New Notes 200 200  
Preferred Stock, Dividend Rate, Percentage 12.75%    
Preferred Stock, Shares Outstanding 85,903 85,903  
Convertible preferred stock 113.9 113.9 113.9
Class of Warrant or Right, Outstanding 250,000 250,000  
Preferred Investors, Each, Percent of New Common Stock 7.98% 7.98%  
Preferred Investors, Aggregate, Percent of New Common Stock 15.96% 15.96%  
Preferred Investors, Each, New Notes 20.19 20.19  
Preferred Investors, Aggregate, New Notes 40.38 40.38  
Stockholders, Percent of New Common Stock 5.00% 5.00%  
Debtor-in-Possession Financing, Amount Arranged 50 50  
Debtor-in-Possession Financing, Interest Rate on Borrowings 10.50% 10.50%  
Debtor in possession financing borrowings   42.3  
Debtor in possession financing repayments   $ 30.8