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Earnings (Loss) Per Share (Details 1) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Compensation Plan
Earnings (Loss) Per Share [Line Items]
Antidilutive securities excluded from computation of diluted (earnings (loss) per share	2.1	2.2	7.9
Convertible Debt Securities \| 10% convertible senior notes due 2018
Earnings (Loss) Per Share [Line Items]
Shares issuable upon conversion of convertible senior notes not included in computation of diluted loss per share	0	6.6	35.1

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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