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Fair Value Measurements - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023	Apr. 30, 2021	Oct. 31, 2020	Oct. 16, 2020	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charge	$ 1,000,000.0	$ 12,800,000	$ 11,500,000
Carrying value of debt	1,191,703,000	1,190,048,000
Pet Products Segment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charge	1,000,000	12,800,000	7,500,000
Garden Products Segment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charge			$ 3,900,000
Senior notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of debt	$ 1,191,542,000	1,189,655,000
Senior notes | Senior notes, interest at 4.125%, payable semi-annually, principal due April 2031
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt, aggregate principal amount				$ 400,000,000
Debt instrument, interest rate	4.125%			4.125%
Estimated fair value of senior notes	$ 374,400,000	367,200,000
Carrying value of debt	$ 396,700,000	396,000,000
Senior notes | Senior notes, interest at 4.125%, payable semi-annually, principal due October 2030
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt, aggregate principal amount					$ 500,000,000	$ 500,000,000
Debt instrument, interest rate	4.125%				4.125%	4.125%
Estimated fair value of senior notes	$ 473,500,000	465,200,000
Carrying value of debt	496,000,000	495,200,000
Senior notes | Senior Notes Due February 2028
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt, aggregate principal amount							$ 300,000,000
Debt instrument, interest rate							5.125%
Estimated fair value of senior notes	299,400,000	299,200,000
Carrying value of debt	$ 298,900,000	$ 298,400,000

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