Annual report pursuant to Section 13 and 15(d)

Concentrations of Credit Risk (Detail)

v2.4.0.6
Concentrations of Credit Risk (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Dec. 25, 2010
Customer Concentration Risk [Member]
     
Concentration Risk [Line Items]      
Concentration Risk, Percentage 43.00% 43.00% 46.00%
Accounts Receivable Customer Concentration Risk [Member] | Accounts Receivable [Member]
     
Concentration Risk [Line Items]      
Concentration Risk, Percentage 33.00% 36.00%  
Total Credit Exposure To Any Single Counterparty, Excluding U.S. And Japan Government Bonds [Member]
     
Concentration Risk [Line Items]      
Concentration Risk, Credit Risk, Maximum Exposure End of Period 750