Debt And Financing (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 1,374.1	1,381.0
Premium/(Discount), Debt	(4.4)	(5.6)
Book Value	1,369.7	1,375.4
Book Value, Current Maturities	(73.7)	(9.1)
Par Value, Excluding Current Maturities	1,295.3	1,371.9
Debt Instrument, Unamortized Discount (Premium), Net, Noncurrent Maturities	(0.7)	5.6
Book Value, Excluding Current Maturities	1,296.0	1,366.3
Carrying Amount [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	1,369.7	1,375.4
Fair Value [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	1,168.6	1,011.2
Restructured Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	298.7	298.7
Premium/(Discount), Debt	60.1	67.6
Book Value	358.8	366.3
Stated Interest Rate	10.00%	10.00%
Effective Interest Rate	0.00%	0.00%
Restructured Term Loan [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	358.8	366.3
Restructured Term Loan [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	263.5	197.5
Line of Credit [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	315.0	313.9
Line of Credit [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	330.4	325.8
Line of Credit [Member] | ABL facility - Term A [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	105.0	105.0
Premium/(Discount), Debt	(4.2)	(4.8)
Book Value	100.8	100.2
Stated Interest Rate	8.50%	8.50%
Effective Interest Rate	15.80%	15.80%
Borrowing Base	137.4	147.6
Capacity	175.0	175.0
Availability	32.4	42.6
Line of Credit [Member] | ABL facility - Term B [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	221.6	222.2
Premium/(Discount), Debt	(7.4)	(8.5)
Book Value	214.2	213.7
Debt Instrument, Gross, Current Maturities	(2.3)	(2.3)
Premium/(Discount), Current Maturities	0	0
Book Value, Current Maturities	(2.3)	(2.3)
Stated Interest Rate	11.25%	11.25%
Effective Interest Rate	15.00%	15.00%
Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Gross, Current Maturities	(6.8)	(6.5)
Premium/(Discount), Current Maturities	0	0
Book Value, Current Maturities	(6.8)	(6.5)
Senior Notes [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	205.7	199.5
Senior Notes [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	132.1	81.5
Senior Notes [Member] | Senior A Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	165.2	161.2
Premium/(Discount), Debt	(25.6)	(27.8)
Book Value	139.6	133.4
Stated Interest Rate	10.00%	10.00%
Effective Interest Rate	18.30%	18.30%
Debt Instrument, Convertible, Conversion Price, Future Period	$ 34.0059
Debt Instrument, Face Amount, Including One Extra Month	166.5
Common Stock, Shares, Issued	5,900,000
Debt Instrument, Convertible, Conversion Ratio, Future Period	29.4067
Senior Notes [Member] | Senior B Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	87.9	91.5
Premium/(Discount), Debt	(21.8)	(25.4)
Book Value	66.1	66.1
Stated Interest Rate	10.00%	10.00%
Effective Interest Rate	25.60%	25.60%
Debt Instrument, Convertible, Conversion Price	$ 15.2475
Debt Instrument, Face Amount, Converted	5.8
Common Stock, Shares, Issued	398,000
Interest Expense, Debt	3.4
Debt Instrument, Unamortized Premium	1.6
Amortization of Debt Discount (Premium)	1.8
Debt Instrument, Convertible, Number Of Equity Instruments, Outstanding	5,800,000
Debt Conversion, Convertible, Number of Equity Instruments, Subsequent Month	0
Debt Instrument, Convertible, Conversion Ratio, Future Period	0.0340059
Debt Instrument, Convertible, Conversion Ratio	0.0655847
Senior Notes [Member] | Senior B Notes [Domain]
Debt Instrument [Line Items]
Long-term Debt, Gross	69.4	69.4
Premium/(Discount), Debt	(5.1)	(6.3)
Book Value	64.3	63.1
Debt Instrument, Gross, Current Maturities	(69.4)
Premium/(Discount), Current Maturities	5.1
Book Value, Current Maturities	(64.3)
Stated Interest Rate	6.00%	6.00%
Effective Interest Rate	15.50%	15.50%
Debt Instrument, Convertible, Conversion Ratio, Future Period	0.0003101
Common Stock, Capital Shares Reserved for Future Issuance	17,600
Common Stock, Capital Shares Reserved For Future Issuance, Future Period	17,616
Senior Notes [Member] | 5.0% and 3.375% Contingent Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	0.3
Premium/(Discount), Debt	0
Book Value	0.3
Stated Interest Rate, Minimum	5.00%	5.00%
Stated Interest Rate, Maximum	3.375%	3.375%
Pension Contribution Deferral Obligation [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	125.0	125.8
Premium/(Discount), Debt	(0.4)	(0.4)
Book Value	124.6	125.4
Effective Interest Rate	7.00%	7.10%
Stated Interest Rate, Minimum	3.00%	3.00%
Stated Interest Rate, Maximum	18.00%	18.00%
Lease Financing Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	301.0	306.9
Premium/(Discount), Debt	0	0
Book Value	301.0	306.9
Debt Instrument, Gross, Current Maturities	(0.3)	(0.3)
Premium/(Discount), Current Maturities	0	0
Book Value, Current Maturities	(0.3)	(0.3)
Effective Interest Rate	11.90%	11.90%
Stated Interest Rate, Minimum	10.00%	10.00%
Stated Interest Rate, Maximum	18.20%	18.20%
Lease Financing Obligations [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	301.0	306.9
Lease Financing Obligations [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	301.0	306.9
Other Debt Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		0.3
Premium/(Discount), Debt		0
Book Value		0.3
Other Debt Obligations [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	189.2	188.8
Other Debt Obligations [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	$ 141.6	99.5