Debt And Financing - Total Debt (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014		Feb. 13, 2014
Debt Instrument [Line Items]
Par value	1,361,300,000	$ 1,116,200,000
Premium/(Discount), Debt	2,100,000	(6,300,000)
Long-term debt	1,363,400,000	1,109,900,000
Long-term Debt, Current Maturities	(8,600,000)	(31,100,000)
Par value, excluding current maturities	1,352,700,000	1,084,500,000
Premium/(Discount), Noncurrent Maturities	2,100,000	(5,700,000)
Long-term debt, less current portion	1,354,800,000	1,078,800,000
A&R CDA
Debt Instrument [Line Items]
Long-term debt		124,200,000
Secured Second A&R CDA
Debt Instrument [Line Items]
Long-term debt				51,000,000
Amended and Restated Contribution Deferral Agreement [Member]
Debt Instrument [Line Items]
Stated interest rate, minimum	3.25%
Stated interest rate, floor	18.25%
Senior B Notes [Domain]
Debt Instrument [Line Items]
Par value		693,000,000
Premium/(Discount), Debt		(5,700,000)
Long-term debt		687,300,000
Interest rate		8.25%
Effective Interest Rate		8.45%
Par Value, Current Maturities		(7,000,000)
Premium/(Discount), Current Maturities		0
Long-term Debt, Current Maturities		(7,000,000)
Other Debt Obligations [Member]
Debt Instrument [Line Items]
Par value	200,000	200,000
Premium/(Discount), Debt	0	0
Long-term debt	200,000	200,000
Par Value, Current Maturities	(200,000)	(200,000)
Premium/(Discount), Current Maturities	0	0
Long-term Debt, Current Maturities	(200,000)	(200,000)
Lease financing obligations [Member]
Debt Instrument [Line Items]
Par value	297,500,000	285,100,000
Premium/(Discount), Debt	0	0
Long-term debt	297,500,000	285,100,000
Stated interest rate, minimum	10.00%	10.00%
Stated interest rate, floor	18.20%	18.20%
Effective Interest Rate	11.90%	12.00%
Par Value, Current Maturities	(8,400,000)	(6,800,000)
Premium/(Discount), Current Maturities	0	0
Long-term Debt, Current Maturities	(8,400,000)	(6,800,000)
Restructured Term Loan [Member]
Debt Instrument [Line Items]
Par value	298,100,000	693,000,000
Premium/(Discount), Debt	37,700,000
Long-term debt	335,800,000
Interest rate	10.00%
Effective Interest Rate	0.00%
Series B Note [Member]
Debt Instrument [Line Items]
Par value		17,700,000	[1]
Line of Credit [Member] | 2014 ABL Facility Credit Agreement [Member]
Debt Instrument [Line Items]
Par value		0
Premium/(Discount), Debt		0
Long-term debt		0
Interest rate		2.50%
Borrowing Base		445,500,000
Line of Credit [Member] | ABL facility - Term B [Member]
Debt Instrument [Line Items]
Par value	219,900,000
Premium/(Discount), Debt	(3,900,000)
Long-term debt	216,000,000
Interest rate	11.25%
Effective Interest Rate	15.00%
Maximum borrowing capacity	219,900,000.0
Borrowing Base	219,900,000.0
Availability	0
Line of Credit [Member] | ABL facility - Term A [Member]
Debt Instrument [Line Items]
Par value	105,000,000
Premium/(Discount), Debt	(2,100,000)
Long-term debt	102,900,000
Interest rate	8.50%
Effective Interest Rate	15.80%
Maximum borrowing capacity	175,000,000
Borrowing Base	156,500,000.0
Availability	51,500,000.0
Senior Notes [Member] | Senior B Notes
Debt Instrument [Line Items]
Par value	69,200,000	17,700,000.0
Premium/(Discount), Debt	(10,500,000)	(600,000)
Long-term debt	58,700,000	17,100,000
Interest rate	10.00%	10.00%
Effective Interest Rate	25.60%	25.60%
Senior Notes [Member] | Series B Note [Member]
Debt Instrument [Line Items]
Par Value, Current Maturities		(17,700,000)
Premium/(Discount), Current Maturities		600,000
Long-term Debt, Current Maturities		(17,100,000)
Senior Notes [Member] | Senior B Notes [Domain]
Debt Instrument [Line Items]
Par value	69,200,000	17,700,000
Interest rate		10.00%
Senior Notes [Member] | Unsecured Second A&R CDA
Debt Instrument [Line Items]
Long-term debt				73,200,000
Senior Notes [Member] | 6% convertible senior notes [Domain]
Debt Instrument [Line Items]
Interest rate		6.00%
Senior Notes [Member] | Senior A Notes [Member]
Debt Instrument [Line Items]
Par value	177,800,000
Premium/(Discount), Debt	(17,800,000)
Long-term debt	160,000,000
Interest rate	10.00%	10.00%
Effective Interest Rate	18.30%
Senior Notes [Member] | Six Percent Senior Convertible Notes [Member]
Debt Instrument [Line Items]
Par value	69,400,000
Premium/(Discount), Debt	(1,100,000)
Long-term debt	68,300,000
Interest rate	6.00%
Effective Interest Rate	15.50%
Pension Contribution Deferral Obligation [Member]
Debt Instrument [Line Items]
Par value	124,200,000
Premium/(Discount), Debt	(200,000)
Long-term debt	124,000,000
Effective Interest Rate	7.30%
Secured Second A&R CDA [Member]
Debt Instrument [Line Items]
Par value		47,000,000
Premium/(Discount), Debt		0
Long-term debt		47,000,000
Stated interest rate, minimum		3.30%
Stated interest rate, floor		18.30%
Effective Interest Rate		7.30%
Unsecured Second A&R CD [Member]
Debt Instrument [Line Items]
Par value		73,200,000
Premium/(Discount), Debt		0
Long-term debt		$ 73,200,000
Stated interest rate, minimum		3.30%
Stated interest rate, floor		18.30%
Effective Interest Rate		7.30%

[1] The Series B Notes exclude $0.4 million of in-kind interest payments that will be payable when the notes are redeemed.