v2.4.0.8
Stockholders' Equity and Stock-Based Compensation - Stock Option Activity (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Sep. 28, 2013
Y
Sep. 29, 2012
Y
Sep. 24, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]      
Options outstanding at September 29, 2012 18,039    
Granted 2,640    
Cancelled/forfeited (1,021)    
Exercised (4,786)    
Options outstanding at September 28, 2013 14,872 18,039  
Number of Shares, Options exercisable at September 28, 2013 7,472    
Number of Shares, Options vested and expected to vest at September 28, 2013 13,780 [1]    
Weighted-Average Exercise Price, Options outstanding $ 17.40    
Weighted-Average Exercise Price, Granted $ 20.29 $ 17.21 $ 17.15
Weighted-Average Exercise Price, Cancelled/Forfeited $ 20.04    
Weighted-Average Exercise Price, Exercised $ 13.71    
Weighted-Average Exercise Price, Options outstanding $ 18.92 $ 17.40  
Weighted-Average Exercise Price, Options exercisable at September 28, 2013 $ 20.28    
Weighted-Average Exercise Price, Options vested and expected to vest at September 28, 2013 $ 19.00 [1]    
Weighted-Average Remaining Contractual Life in Years, Options outstanding 4.4    
Weighted-Average Remaining Contractual Life in Years, Options outstanding 3.9 4.4  
Weighted-Average Remaining Contractual Life in Years, Options exercisable at September 29, 2013 2 years 10 months 24 days    
Weighted-Average Remaining Contractual Life in Years, Options vested and expected to vest at September 29, 2013 3.8 [1]    
Aggregate Intrinsic Value, Options outstanding, Beginning balance $ 78,962    
Aggregate Intrinsic Value, Exercised 37,609 20,400 12,300
Aggregate Intrinsic Value, Options outstanding, Ending balance 54,956 78,962  
Aggregate Intrinsic Value, Options exercisable at September 29, 2013 29,438    
Aggregate Intrinsic Value, Options vested and expected to vest at September 29, 2013 $ 51,656 [1]    
[1] This represents the number of vested stock options as of September 28, 2013 plus the unvested outstanding options at September 28, 2013 expected to vest in the future, adjusted for estimated forfeitures.