Fair Value Measurement (Financial Assets And Liabilities Categorized Based Upon The Fair Value Hierarchy) (Detail) (USD $)
Jul. 01, 2012
Dec. 25, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial assets $ 32,613,000 $ 26,155,000
Total financial liabilities 1,030,000 1,443,000
Cash excluded from short-term investments and cash equivalents 260,000,000 236,500,000
Money Market Funds [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial assets 7,385,000 [1] 1,172,000 [1]
Commercial Paper [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial assets 24,964,000 [1] 24,963,000 [1]
Foreign Currency Forward Contracts [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial assets 264,000 20,000
Interest Rate Swaps [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial liabilities 1,030,000 1,443,000
Fair Value, Inputs, Level 1 [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial assets 7,385,000 1,172,000
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial assets 7,385,000 1,172,000
Fair Value, Inputs, Level 2 [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial assets 25,228,000 24,983,000
Total financial liabilities 1,030,000 1,443,000
Fair Value, Inputs, Level 2 [Member] | Commercial Paper [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial assets 24,964,000 24,963,000
Fair Value, Inputs, Level 2 [Member] | Foreign Currency Forward Contracts [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial assets 264,000 20,000
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swaps [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total financial liabilities $ 1,030,000 $ 1,443,000
[1] Total short-term investments and cash equivalents excludes cash of $260.0 million and $236.5 million as of July 1, 2012 and December 25, 2011 held in operating accounts, respectively.