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Pension And Other Post-Retirement Benefits (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Jun. 30, 2013
Defined Benefit Plan Disclosure [Line Items]    
Pension and other postretirement liabilities $ 91.2 $ 91.4
Other Post-Retirement Benefits [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Contribution to pension plans for continuing operations 0.3  
Pension Benefits [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Contribution to pension plans for continuing operations 2.3  
Expected required contributions   0.2
Additional discretionary contribution   $ 5.0