Acquisitions and Investments in Joint Ventures - Fair Assets and Liabilities Acquired (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 24, 2022	Sep. 25, 2021	Jun. 30, 2021	Feb. 11, 2021	Dec. 31, 2020	Dec. 18, 2020	Sep. 26, 2020
Business Acquisition [Line Items]
Goodwill	$ 546,436	$ 546,436	$ 369,391					$ 289,955
Green Garden Products
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired					$ 150,247
Fixed assets					2,340
Goodwill		143,000			142,582
Operating lease right-of-use assets					14,577
Other intangible assets, net		393,000			392,929
Other assets		$ 487,000			161
Current liabilities					(26,507)
Long-term lease liabilities					(10,912)
Deferred income taxes and other long-term obligations					(94,907)
Net assets acquired, less cash and cash equivalents					570,510
Green Garden Products | Amounts Previously Recognized as of Acquisition Date
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired					118,421
Fixed assets					2,340
Goodwill					0
Operating lease right-of-use assets					14,577
Other intangible assets, net					0
Other assets					487,420
Current liabilities					(26,507)
Long-term lease liabilities					(10,912)
Deferred income taxes and other long-term obligations					(14,829)
Net assets acquired, less cash and cash equivalents					570,510
Green Garden Products | Measurement Period Adjustments
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired					31,826
Fixed assets					0
Goodwill					142,582
Operating lease right-of-use assets					0
Other intangible assets, net					392,929
Other assets					(487,259)
Current liabilities					0
Long-term lease liabilities					0
Deferred income taxes and other long-term obligations					(80,078)
Net assets acquired, less cash and cash equivalents					$ 0
D&D Commodities Limited
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired				$ 17,648
Fixed assets				8,730
Goodwill	$ 34,000			34,463
Other intangible assets, net				64,300
Other assets				167
Current liabilities				(7,183)
Long-term debt				(30,000)
Net assets acquired, less cash and cash equivalents				88,125
D&D Commodities Limited | Amounts Previously Recognized as of Acquisition Date
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired				17,183
Fixed assets				6,907
Goodwill				0
Other intangible assets, net				0
Other assets				101,218
Current liabilities				(7,183)
Long-term debt				(30,000)
Net assets acquired, less cash and cash equivalents				88,125
D&D Commodities Limited | Measurement Period Adjustments
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired				465
Fixed assets				1,823
Goodwill				34,463
Other intangible assets, net				64,300
Other assets				(101,051)
Current liabilities				0
Long-term debt				0
Net assets acquired, less cash and cash equivalents				$ 0
DoMyOwn
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired							$ 3,922
Fixed assets							3,047
Goodwill			68,500				68,512
Other intangible assets, net							11,900
Other assets							0
Current liabilities							(6,446)
Net assets acquired, less cash and cash equivalents							80,935
DoMyOwn | Amounts Previously Recognized as of Acquisition Date
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired							3,922
Fixed assets							3,047
Goodwill							0
Other intangible assets, net							0
Other assets							80,412
Current liabilities							(6,446)
Net assets acquired, less cash and cash equivalents							80,935
DoMyOwn | Measurement Period Adjustments
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired							0
Fixed assets							0
Goodwill							68,512
Other intangible assets, net							11,900
Other assets							(80,412)
Current liabilities							0
Net assets acquired, less cash and cash equivalents							$ 0
Hopewell Nursery
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired						$ 42,788
Fixed assets						31,614
Goodwill			$ 10,900			10,924
Other intangible assets, net						4,130
Other assets						0
Current liabilities						(6,767)
Other long-term liabilities						(1,301)
Net assets acquired, less cash and cash equivalents						81,388
Hopewell Nursery | Amounts Previously Recognized as of Acquisition Date
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired						39,046
Fixed assets						31,940
Goodwill						0
Other intangible assets, net						0
Other assets						18,470
Current liabilities						(6,767)
Other long-term liabilities						(1,301)
Net assets acquired, less cash and cash equivalents						81,388
Hopewell Nursery | Measurement Period Adjustments
Business Acquisition [Line Items]
Current assets, net of cash and cash equivalents acquired						3,742
Fixed assets						(326)
Goodwill						10,924
Other intangible assets, net						4,130
Other assets						(18,470)
Current liabilities						0
Other long-term liabilities						0
Net assets acquired, less cash and cash equivalents						$ 0