Annual report pursuant to Section 13 and 15(d)

Organization and Significant Accounting Policies - Long-Lived Assets, Additional Information (Details)

v3.20.2
Organization and Significant Accounting Policies - Long-Lived Assets, Additional Information (Details) - USD ($)
12 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 29, 2018
Impaired Long-Lived Assets Held and Used [Line Items]      
Impairment charge $ 0   $ 0
Pet Segment      
Impaired Long-Lived Assets Held and Used [Line Items]      
Impairment charge $ 0 $ 2,500,000