Goodwill - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023	Sep. 24, 2022
Goodwill [Roll Forward]
Goodwill	$ 964,253	$ 960,922	$ 955,997	$ 955,997
Accumulated impairment losses	(409,561)	(409,561)	(409,561)	(409,561)
Balance as of beginning of period	551,361	546,436	546,436
Additions in fiscal year	3,331	4,925	0
Balance as of end of period	554,692	551,361	546,436
Garden Products Segment
Goodwill [Roll Forward]
Goodwill	482,952	482,952	482,952	482,952
Accumulated impairment losses	(213,583)	(213,583)	(213,583)	(213,583)
Balance as of beginning of period	269,369	269,369	269,369
Additions in fiscal year	0	0	0
Balance as of end of period	269,369	269,369	269,369
Pet Products Segment
Goodwill [Roll Forward]
Goodwill	481,301	477,970	473,045	473,045
Accumulated impairment losses	(195,978)	(195,978)	(195,978)	$ (195,978)
Balance as of beginning of period	281,992	277,067	277,067
Additions in fiscal year	3,331	4,925	0
Balance as of end of period	$ 285,323	$ 281,992	$ 277,067