Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Additional Information (Detail)

v2.4.0.8
Stock-Based Compensation - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Mar. 29, 2014
Mar. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Tax benefit associated with share-based compensation expense $ 1.7 $ 2.9
Selling, General and Administrative Expenses [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 4.6 $ 7.8