Liquidity (Risks and Uncertainties) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Risks and Uncertainties [Line Items]
Net cash used in operating activities	$ 56,200,000	$ 13,900,000
Long-term Debt, Gross	1,221,000,000		1,361,300,000
Operating Leases, Future Minimum Payments, Due Remainder of Fiscal Year	40,900,000
Operating Leases, Future Minimum Payments Due	149,300,000
Payments to Acquire Property, Plant, and Equipment	11,700,000	17,200,000
Other Postretirement Benefit Plans, Defined Benefit [Member]
Risks and Uncertainties [Line Items]
Defined Benefit Plan, Estimated Benefit Obligation for Remaining Fiscal Year	66,100,000
Multiemployer Plans, Pension [Member]
Risks and Uncertainties [Line Items]
Defined Benefit Plan, Estimated Benefit Obligation for Remaining Fiscal Year	63,700,000
2014 ABL Facility Credit Agreement [Member] [Member]
Risks and Uncertainties [Line Items]
Total availability	223,000,000
Revenue Equipment [Member]
Risks and Uncertainties [Line Items]
Operating lease commitment	$ 6,400,000
Operating lease term	3 years