Annual report pursuant to Section 13 and 15(d)

Business and Credit Concentrations (Details)

v2.4.0.6
Business and Credit Concentrations (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Customer
Dec. 31, 2010
Customer
Dec. 31, 2009
Customer
Concentration Risk [Line Items]      
Total manufacturers produced 62.50% 70.60% 69.10%
Business and Credit Concentration (Textual) [Abstract]      
Domestic accounts receivable which do not require collateral from customers $ 90.9 $ 164.4  
Foreign accounts receivable which are collateralized by letters of credit 105.5 121.4  
International net sales 546.0 484.7 358.1
Losses due to company's credit write-offs 7.0 4.8 1.2
Net assets held outside the United States $ 325.3 $ 322.0  
Number of customers accounting for more than 10% of sales 0 0 0
Number of customer accountant for more than 12.5% of Accounts receivable 1    
Number of customers accounting for more than 10% of accounts receivable 1    
Number of largest customers 5    
Percentage of net sales to largest customers 17.80% 24.90% 25.10%
Companies Top Five Manufacturers Produced [Member]
      
Concentration Risk [Line Items]      
Manufacturer #1 30.80% 34.70% 29.70%
Manufacturer #2 11.50% 13.00% 12.20%
Manufacturer #3 7.70% 9.40% 11.20%
Manufacturer #4 6.60% 8.70% 10.50%
Manufacturer #5 5.90% 4.80% 5.50%