Annual report pursuant to Section 13 and 15(d)

Goodwill - Changes in Carrying Amount of Goodwill (Detail)

v3.5.0.2
Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 24, 2016
Sep. 26, 2015
Sep. 27, 2014
Sep. 28, 2013
Goodwill [Line Items]        
Goodwill $ 640,946 $ 618,650 $ 617,794 $ 615,317
Accumulated impairment losses (409,561) (409,561) (409,561) (409,561)
Total goodwill 231,385 209,089 208,233 205,756
Additions in fiscal year 22,296 856 2,477  
Garden Products Segment [Member]        
Goodwill [Line Items]        
Goodwill 219,056 213,583 213,583 213,583
Accumulated impairment losses (213,583) (213,583) (213,583) (213,583)
Total goodwill 5,473 0 0 0
Additions in fiscal year 5,473 0 0  
Pet Products Segment [Member]        
Goodwill [Line Items]        
Goodwill 421,890 405,067 404,211 401,734
Accumulated impairment losses (195,978) (195,978) (195,978) (195,978)
Total goodwill 225,912 209,089 208,233 $ 205,756
Additions in fiscal year $ 16,823 $ 856 $ 2,477