The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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Restructuring (Details) $ in Millions	3 Months Ended				6 Months Ended
Restructuring (Details) $ in Millions	Mar. 29, 2025 USD ($) position	Mar. 30, 2024 USD ($) position	Dec. 30, 2023 USD ($)	Dec. 25, 2021 project	Mar. 29, 2025 USD ($)	Mar. 30, 2024 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of positions eliminated	50			117
Severance costs	$ 5.0
Mobidiag
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of positions eliminated \| position		190
Severance costs			$ 1.8		$ 11.9
Accelerated depreciation			7.2
Lease asset impairment charges			$ 12.5
Expected cost	15.7				15.7
Mobidiag \| Facility Closing
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Severance costs	0.7				2.4
Danbury closure
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Severance costs	0.3	$ 1.3			1.4	$ 1.8
Expected cost	9.0				$ 9.0
Danbury closure \| Facility Closing
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring costs	$ 1.1