Annual report pursuant to Section 13 and 15(d)

Other Intangible Assets - Additional Information (Detail)

v2.4.0.8
Other Intangible Assets - Additional Information (Detail) (USD $)
 12 Months Ended 12 Months Ended 12 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 24, 2011
Sep. 28, 2013
Marketing-related intangible assets [Member]
Dec. 29, 2012
Marketing-related intangible assets [Member]
FourStar Microbial [Member]
Sep. 28, 2013
Customer-related intangible assets [Member]
Sep. 28, 2013
Other acquired intangible assets [Member]
Dec. 29, 2012
Other acquired intangible assets [Member]
FourStar Microbial [Member]
Sep. 28, 2013
Minimum [Member]
Sep. 28, 2013
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]                    
Intangible assets acquired         $ 100,000     $ 7,000,000    
Indefinite-lived intangibles assets, impairment charge 0                  
Weighted average remaining lives of acquired intangible assets       6 years   15 years 15 years   1 year 25 years
Amortization expense for intangibles 5,100,000 5,600,000 5,000,000              
Estimated annual amortization expense related to acquired intangible assets, 2014 5,000,000                  
Estimated annual amortization expense related to acquired intangible assets, 2015 5,000,000                  
Estimated annual amortization expense related to acquired intangible assets, 2016 5,000,000                  
Estimated annual amortization expense related to acquired intangible assets, 2017 5,000,000                  
Estimated annual amortization expense related to acquired intangible assets, 2018 $ 5,000,000