Commitments and Contingencies, Liquidity Option Agreement (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Dec. 31, 2015
Liquidity Option Agreement [Abstract]
Liquidity Option Agreement	$ 242.9	$ 245.1
Business Acquisition [Line Items]
Change in fair value of Liquidity Option Agreement	$ (2.2)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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