Other Intangible Assets - Additional Information (Details) - USD ($)	6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 25, 2023	Sep. 25, 2021	Sep. 30, 2023	Sep. 24, 2022	Sep. 25, 2021
Finite-Lived Intangible Assets [Line Items]
Impairment charge			$ 11,500,000	$ 0	$ 0
Useful life (in years)			5 years
Amortization expense for intangibles			$ 34,500,000	$ 35,100,000	$ 16,500,000
Intangible asset, expected amortization, year one			29,000,000
Intangible asset, expected amortization, year two			29,000,000
Intangible asset, expected amortization, year three			29,000,000
Intangible asset, expected amortization, year four			25,000,000
Intangible asset, expected amortization, year five			25,000,000
Pet Products Segment
Finite-Lived Intangible Assets [Line Items]
Impairment charge			7,500,000
Garden Products Segment
Finite-Lived Intangible Assets [Line Items]
Impairment charge			$ 3,900,000
Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)			2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)			25 years
Marketing-Related Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, net		$ 181,900,000
Marketing-Related Intangible Assets | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)			1 year
Customer-Related Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, net		272,800,000
Customer-Related Intangible Assets | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)			11 years
Other Acquired Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, net		$ 2,500,000
Other Acquired Intangible Assets | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)			5 years
Do My Own & Hopewell Nursery | Marketing-Related Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, net	$ 1,500,000
Do My Own & Hopewell Nursery | Customer-Related Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, net	3,300,000
Do My Own & Hopewell Nursery | Other Acquired Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, net	$ 11,200,000