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Other Operating Credits and Charges, Net severance (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]      
Reserves For Timber Obligations $ 0 $ 0.8 $ 1.5
Addition to environmental related contingency reserves (1.0) 0 (0.9)
Restructuring Reserve [Roll Forward]      
Reductions, net of additions, to product related contingency reserves 0 (5.0) (11.5)
Severance
     
Restructuring Reserve [Roll Forward]      
Beginning Balance 0.7 1.5 0.6
Charged to expense, continuing operations 0.8 1.0 1.9
Payments (0.8) (1.8) (1.0)
Ending Balance $ 0.7 $ 0.7 $ 1.5