Liquidity (Risks and Uncertainties) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Risks and Uncertainties [Line Items]
Minimum cash balance required	$ 50,000,000
Minimum cash balance required, increase	119,400,000
Net cash used in operating activities	(25,900,000)	(26,000,000)	700,000
Net loss	(136,500,000)	(354,400,000)	(327,800,000)
Aggregate principal amount of outstanding indebtness	1,375,400,000
Future operating lease obligations	52,100,000
Capital expenditures	66,400,000	71,600,000	19,200,000
New operating lease commitments	67,100,000
Average operating lease term	3 years
Other Postretirement Benefit Plans, Defined Benefit [Member]
Risks and Uncertainties [Line Items]
Funding obligations for pension plans	62,600,000
Multiemployer Plans, Pension [Member]
Risks and Uncertainties [Line Items]
Funding obligations for pension plans	84,900,000
ABL Facility Credit Agreement [Member]
Risks and Uncertainties [Line Items]
Maximum borrowing capacity	400,000,000
Line of credit facility, total availability	251,300,000
Line of credit facility, remaining borrowing capacity	$ 369,800,000