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Income Taxes Components of Current Deferred Tax Assets and Liabilities (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Total current deferred tax assets $ 36.4 $ 34.9
Unrealized foreign exchange gain and other (0.1) (1.4)
Current deferred tax asset, net 36.3 33.5
NOL and tax credit carryforward, range of carryforward period, lower end of range 5 years  
NOL and tax credit carryforward, range of carryforward period, upper end of range 20 years  
Deferred Tax Assets, Current [Member]
    
Employee benefits 14.5 16.9
Inventory 8.0 12.6
Prepaid taxes and other 24.6 15.5
Valuation allowance (10.7) (10.1)
Total current deferred tax assets $ 36.4 $ 34.9