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Accrued Expenses (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Accrued Expenses [Abstract]    
Accrued salaries, wages and employee benefits $ 49.0 $ 43.5
Other accrued expenses 43.7 32.3
Total $ 92.7 $ 75.8