v2.4.0.8
Stockholders' Equity and Stock-Based Compensation - Additional Information (Detail) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Sep. 24, 2011
Sep. 28, 2013
Series A Preferred Stock [Member]
Sep. 28, 2013
Stock Options [Member]
Sep. 29, 2012
Stock Options [Member]
Sep. 24, 2011
Stock Options [Member]
Sep. 28, 2013
Restricted Stock Units [Member]
Sep. 29, 2012
Restricted Stock Units [Member]
Sep. 24, 2011
Restricted Stock Units [Member]
Sep. 28, 2013
2008 Equity Plan [Member]
Mar. 31, 2012
2012 Employee Stock Purchase Plan [Member]
Sep. 29, 2012
2008 Employee Stock Purchase Plan [Member]
Sep. 28, 2013
2012 Employee Stock Purchase Plan [Member]
Sep. 29, 2012
2012 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                
Share portion entitled to purchase by right         One ten-thousandth                      
Preferred stock, par value   $ 0.01 $ 0.01   $ 0.01                      
Common stock, par value   $ 0.01 $ 0.01                          
Purchase price of each right   $ 107                            
Dividend record date   Dec. 02, 2013                            
Authorized value of common shares to be repurchased   $ 250,000,000                            
Period available for common stock to be repurchased   3 years                            
Common stock, shares authorized                       31.5   0.4    
Shares available for grant                       13.6        
Market stock units granted during the period 0.1                              
Valuation of MSUs using Monte Carlo simulation model $ 18.49                              
Minimum eligible percentage to receive target number of shares of company's common stock   0.00%                            
Maximum eligible percentage to receive target number of shares of company's common stock   200.00%                            
Stock-based compensation, period of vest term granted to employees, years           5 years                    
Percentage of vesting for stock granted to employees           20.00%                    
Percentage of vesting for stock granted to employees                 25.00%              
RSU, period of vest term granted to employees, years                 4 years              
Percentage of forfeiture rates, minimum   0.00%                            
Percentage of forfeiture rates, maximum   6.00%                            
Stock-based compensation expense           23,700,000 18,700,000 15,200,000 26,000,000 21,400,000 20,300,000          
Tax benefit related to stock based compensation   17,200,000 12,200,000 14,800,000                        
Expense related to the acceleration of vesting for certain options assumed in acquisition   7,900,000 3,500,000                          
Unrecognized compensation expense           30,000,000     41,600,000              
Weighted average period of unrecognized stock-based compensation, years           2 years 8 months 12 days     2 years 7 months 6 days              
Intrinsic value of option exercised   37,609,000 20,400,000 12,300,000                        
Fair value of RSUs vested                 27,300,000 15,700,000 43,200,000          
Number of shares that may be issued under Employee Stock Purchase Plan                         2.5      
Percentage of common stock price for ESPP                         85.00%      
Percent of exercise price to last reported closing price                           95.00%    
Stock-based compensation expense   $ 52,307,000 $ 40,572,000 $ 35,472,000                     $ 2,700,000 $ 400,000