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Business Segments and Geographic Information - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended
Mar. 30, 2013
Customer
Mar. 24, 2012
Customer
Mar. 30, 2013
Customer
Segment
Mar. 24, 2012
Customer
Sep. 29, 2012
Customer
Segment Reporting [Abstract]          
Number of reportable segments     4    
Intersegment revenues $ 0 $ 0 $ 0 $ 0  
Customers with balances greater than 10% of accounts receivable 0   0   0
Customer represented greater than 10% of consolidated revenues 0 0 0 0  
Total revenue attributed to foreign countries $ 153,500,000 $ 117,500,000 $ 323,600,000 $ 235,000,000  
More than 10% country wise revenue, description     Other than the United States, no single country accounted for more than 10% of consolidated revenues.