Loss per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Earnings Per Share [Abstract]
Net (Loss) Income, Basic	$ (324,107)	$ (1,045,834)
Weighted Average Shares, Basic	689,784	478,165
Loss Per Share, Basic (in dollars per share)	$ (0.47)	$ (2.19)
Effect of dilutive securities
Restricted stock	$ 0	$ 0
Restricted stock (in shares)	0	0
Convertible preferred stock	$ 0	$ 0
Convertible preferred stock (in shares)	0	0
Convertible senior unsecured notes	$ 0
Convertible senior unsecured notes (in shares)	0
Net Loss, Diluted	$ (324,107)	$ (1,045,834)
Weighted average shares, diluted	689,784	478,165
(Loss) Earnings Per Share, Diluted (in usd per share)	$ (0.47)	$ (2.19)
8.125% Convertible Senior Notes due 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Long-term debt, fixed interest rate	8.125%
7.5% Convertible Senior Notes due 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Long-term debt, fixed interest rate	7.50%
Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	67,600	71,700
Convertible Debt Securities
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	58,300
8.5% Convertible perpetual preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred stock, dividend rate, percentage	8.50%
7.0% Convertible perpetual preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred stock, dividend rate, percentage	7.00%

Dilutive Securities, Effect On Basic EPS, Convertible Debt Securities

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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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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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