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Additional Accounting Policy and Balance Sheet Disclosures (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Advertising [Abstract]      
Capitalized Direct-response Advertising Costs $ 1.9 $ 5.7  
Advertising Expense 39.5 29.6 27.2
Catalog Amortization Expense Included in Advertising Expense 5.6 7.2 6.8
Direct-response Advertising Costs, Expected Period of Benefit generally one to three years    
Asset Retirement Obligation [Abstract]      
Asset Retirement Obligation 28.3 23.7  
Derivative Contracts [Abstract]      
Notional Amount of Cash Flow Hedge Instruments 0    
Notional Amount of Fair Value Hedge Instruments 0    
Schedule of Equity Method Investments [Line Items]      
Purchases of Products for Resale from Joint Venture 48.3 45.1 44.0
Foreign Currency Transaction Gain (Loss) [Abstract]      
Foreign Currency Transaction Gain (Loss), before Tax (11.0) (1.0) (6.4)
Investments [Abstract]      
Available-for-Sale Investments, Maximum Ownership Percentage 20.00%    
Cost Method Investments $ 12.2 $ 11.9  
Minimum [Member]
     
Schedule of Equity Method Investments [Line Items]      
Equity Method Investment, Ownership Percentage 20.00%    
Maximum [Member]
     
Schedule of Equity Method Investments [Line Items]      
Equity Method Investment, Ownership Percentage 50.00%    
Joint Ventures [Member] | Minimum [Member]
     
Schedule of Equity Method Investments [Line Items]      
Equity Method Investment, Ownership Percentage 49.00%    
Joint Ventures [Member] | Maximum [Member]
     
Schedule of Equity Method Investments [Line Items]      
Equity Method Investment, Ownership Percentage 50.00%