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Assets and Liabilities in and Results of Discontinued Operations - Textual (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2007
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Option Contract, Annual Premium			15.00%
Option Contract, Exercisable			30.00%
Fair value, Derivative Asset, Noncurrent	$ 6.7	$ 6.7
Derivative, Gain	$ 6.7	$ 6.7
Maximum [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Option Contract, Equity Opportunity			5.00%

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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