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Goodwill and Other Intangible Assets and Liabilities (Details)
$ in Millions
12 Months Ended
Dec. 31, 2015
USD ($)
$ / bbl
Dec. 31, 2014
USD ($)
$ / bbl
Mar. 31, 2014
$ / bbl
Goodwill [Line Items]      
Goodwill   $ 276.1  
Goodwill, Impaired, Accumulated Impairment Loss   $ (2,997.9)  
Price Per Barrel | $ / bbl 15 35 50
Asset Impairment Charges, Assumptions Used, Terminal Growth Rate 3.00%    
Asset Impairment Charges, Assumptions Used, Weighted Average Capital Cost 11.50% 11.00%  
Floaters [Member]      
Goodwill [Line Items]      
Goodwill, Impairment Loss $ 83.5 $ (2,997.9)  
Jackups [Member]      
Goodwill [Line Items]      
Goodwill, Impairment Loss $ 192.6