Quarterly report pursuant to Section 13 or 15(d)

Sale Of Accounts Receivable (Details)

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Sale Of Accounts Receivable (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Dec. 31, 2011
Apr. 02, 2011
Sale Of Accounts Receivable [Abstract]      
Maximum amount of accounts receivable sold at any point in time $ 237.5    
Decrease in receivables related to balances sold 156.6 115.4 140.1
Sale of accounts receivable 299.6    
Funding fee $ 0.5