2014 Financing Transactions (Details) (USD $)	0 Months Ended	3 Months Ended		1 Months Ended	0 Months Ended
	Jan. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Feb. 28, 2014	Feb. 13, 2014	Dec. 31, 2014
2014 Financing Transactions [Line Items]
Issuance of equity, net	$ 250,000,000	$ 0	$ 250,000,000
Repayments of Long-term Debt		4,500,000	789,500,000
Issuance of long-term debt		0	693,000,000
Payments of financing costs		43,800,000
Long-term Debt		1,088,200,000				1,109,900,000
(Gain) loss on extinguishment of debt		(600,000)	11,200,000
Acceleration of net premiums on old debt		16,300,000
Expense related to fair value of incremental shares converted		600,000	5,100,000
Payments of Debt Issuance Costs		26,700,000
Equity issuance costs		0	17,100,000
Previous maximum ownership percentage		19.99%
Amortization of Beneficial Conversion Feature on Preferred Stock		0	18,100,000
Preferred Stock [Member]
2014 Financing Transactions [Line Items]
Issuance of common stock	583,334
Common Stock [Member]
2014 Financing Transactions [Line Items]
Issuance of common stock	14,333,334
Secured CDA [Domain]
2014 Financing Transactions [Line Items]
Long-term Debt					51,000,000
AR CDA [Member]
2014 Financing Transactions [Line Items]
Long-term Debt					124,200,000
Series A Note [Member]
2014 Financing Transactions [Line Items]
Future Repayments of Series A Notes				89,600,000
2014 Term Loan [Member] | 2014 Financing [Member]
2014 Financing Transactions [Line Items]
Face amount					700,000,000
Senior Notes [Member] | Unsecured Second A&R CD [Member]
2014 Financing Transactions [Line Items]
Long-term Debt					73,200,000
Senior Notes [Member] | 10% Convertible Senior Notes
2014 Financing Transactions [Line Items]
Stated Interest Rate		10.00%
Senior Notes [Member] | Senior B Notes [Domain]
2014 Financing Transactions [Line Items]
Debt conversion price, future period	$ 15.00	$ 18.5334
Debt Conversion, Converted Instrument, Amount			1,200,000		50,600,000
Long-term Debt						47,000,000
Make whole interest		8,000,000
Senior Notes [Member] | Unsecured CDA [Domain]
2014 Financing Transactions [Line Items]
Debt Conversion, Converted Instrument, Amount					50,600,000
Senior Notes [Member] | 6% Senior Convertible Notes [Member]
2014 Financing Transactions [Line Items]
Stated Interest Rate		6.00%
2014 ABL Facility Credit Agreement [Member] | 2014 Financing [Member]
2014 Financing Transactions [Line Items]
Face amount					450,000,000
2014 Financing [Member]
2014 Financing Transactions [Line Items]
Non Cash Sources of Funds					174,800,000
Non Cash Uses of Funds					174,800,000
Issuance of common stock					215,000,000
Issuance of preferred stock					35,000,000
Payments for Fees, Expenses and Original Issue Discount					50,800,000
Cash, Period Increase (Decrease)					16,500,000
Sources of Funds					1,040,000,000
Uses of Funds					1,040,000,000
2014 Financing [Member] | 2014 ABL Facility Credit Agreement [Member]
2014 Financing Transactions [Line Items]
Issuance of long-term debt					0
Increase (Decrease) in Restricted Cash					92,000,000
2014 Financing [Member] | 2014 Term Loan [Member]
2014 Financing Transactions [Line Items]
Issuance of long-term debt					700,000,000
2014 Financing [Member] | ABL Facility [Member]
2014 Financing Transactions [Line Items]
Repayments of Long-term Debt					326,000,000
Increase (Decrease) in Restricted Cash					90,000,000
2014 Financing [Member] | Series A Note [Member]
2014 Financing Transactions [Line Items]
Repayments of Long-term Debt	90,900,000
Future Repayments of Series A Notes					89,600,000
Repayments of debt, including accrued interest					93,900,000
2014 Financing [Member] | Restructured Term Loan [Member]
2014 Financing Transactions [Line Items]
Repayments of Long-term Debt					299,700,000
2014 Financing [Member] | 6% Notes [Member]
2014 Financing Transactions [Line Items]
Repayments of Long-term Debt					$ 71,500,000