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Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Oct. 07, 2015
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Subsequent Event [Line Items]          
Cash distribution [1]     $ 0.445 $ 0.070 $ 1.335
Distribution arrearages outstanding   $ 36.5   $ 36.5  
New York Stock Exchange [Member]          
Subsequent Event [Line Items]          
Minimum per unit closing price $ 1.00        
Minimum per unit closing price threshold of consecutive days 30 days        
Common Units [Member]          
Subsequent Event [Line Items]          
Minimum required distributions per unit       $ 0.445  
Subordinated Units [Member]          
Subsequent Event [Line Items]          
Cash distribution   $ 0 $ 0 $ 0 $ 0
[1] No distributions were paid on the subordinated units for the three and nine months ended September 30, 2015 and 2014