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Schedule II - Valuation and Qualifying Accounts (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Valuation and Qualifying Accounts Disclosure [Line Items]        
Allowance for Doubtful Accounts Receivable, Current $ 6.5 $ 5.5    
Valuation Allowance, Amount 166.1 426.9    
Inventory Valuation Reserves 21.0 26.7    
Allowance for Doubtful Accounts [Member]
        
Valuation and Qualifying Accounts Disclosure [Line Items]        
Allowance for Doubtful Accounts Receivable, Current 6.5 5.5 6.2 8.3
Valuation Allowances and Reserves, Charged to Cost and Expense 2.0 3.3 3.1  
Valuation Allowances and Reserves, Deductions 1.0 4.0 5.2  
Valuation Allowance of Deferred Tax Assets [Member]
        
Valuation and Qualifying Accounts Disclosure [Line Items]        
Valuation Allowance, Amount 166.1 426.9 560.9 559.7
Valuation Allowances and Reserves, Charged to Cost and Expense 80.9 14.6 50.9  
Valuation Allowances and Reserves, Deductions 341.7 148.6 49.7  
Inventory Valuation Reserve [Member]
        
Valuation and Qualifying Accounts Disclosure [Line Items]        
Inventory Valuation Reserves 21.0 26.7 27.7 33.7
Valuation Allowances and Reserves, Charged to Cost and Expense 7.9 6.3 7.7  
Valuation Allowances and Reserves, Deductions $ 13.6 $ 7.3 $ 13.7