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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 $ / bbl
Goodwill [Line Items]
Goodwill	$ 276.1
Accumulated impairment of goodwill	$ (3,000.0)
Price per barrel | $ / bbl	15	35
Floaters [Member]
Goodwill [Line Items]
Goodwill, impairment loss	$ (83.5)
Jackups [Member]
Goodwill [Line Items]
Goodwill, impairment loss	$ (192.6)

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Price Per Barrel

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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