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Summary of Significant Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 25, 2012
Dec. 30, 2012
Significant Accounting Policies Disclosure [Line Items]      
Fiscal year duration 52 weeks   53 weeks
First quarter duration 13 weeks 13 weeks  
Accured interest reclassified out of accrued expenses to a discrete line item $ 15.3 $ 15.6  
Commission expense reclassified out of Product Sales to Selling, General and Administrative Expense 49.2 44.2  
Reclassification adjustment
     
Significant Accounting Policies Disclosure [Line Items]      
Accured interest reclassified out of accrued expenses to a discrete line item   15.6  
Commission expense reclassified out of Product Sales to Selling, General and Administrative Expense   $ 0.4  
Minimum
     
Significant Accounting Policies Disclosure [Line Items]      
Fiscal year duration 52 weeks    
Maximum
     
Significant Accounting Policies Disclosure [Line Items]      
Fiscal year duration 53 weeks