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Fair Value Measurements - Additional Information (Details) - USD ($)	3 Months Ended								12 Months Ended
	Sep. 27, 2025	Mar. 29, 2025	Dec. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Dec. 30, 2023	Sep. 30, 2023	Jul. 01, 2023	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Intangible asset impairment charges		$ 204,000,000
Impairment of intangible assets and equipment									$ 42,500,000	$ 5,600,000	$ 44,300,000
Loss on assets held-for-sale									0	0	(51,700,000)
Property, plant and equipment, net	$ 559,600,000						$ 517,000,000.0		559,600,000	$ 537,800,000	$ 517,000,000.0
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]		Impairment of intangible assets and equipment, Impairment of intangible assets and equipment
In-process research and development
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Impairment of intangible assets and equipment								$ 10,500,000
Acessa
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Intangible asset impairment charges		$ 61,900,000
Finite-lived intangible assets, net		7,200,000
Impairment of intangible assets and equipment		61,900,000
Bolder
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Intangible asset impairment charges		64,500,000
Finite-lived intangible assets, net		0
Impairment of intangible assets and equipment		64,500,000
Diagenode
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Intangible asset impairment charges		38,600,000
Finite-lived intangible assets, net		3,000,000
Impairment of intangible assets and equipment		38,600,000
Mobidiag
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Intangible asset impairment charges		39,000,000
Finite-lived intangible assets, net		6,700,000
Impairment of intangible assets and equipment								186,900,000
Impairment of intangible assets and equipment		39,000,000						$ 174,800,000
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]								Impairment of intangible assets and equipment
Mobidiag \| In-process research and development
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Impairment of intangible assets and equipment	5,000,000	16,900,000				$ 4,300,000
Other Intangible Assets, Net	0								0
Impairment of intangible assets and equipment		$ 16,900,000	$ 4,300,000
Intangible assets, current						22,400,000
SSI Ultrasound Imaging Business
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loss on assets held-for-sale							$ 51,700,000
Ultrasound Imaging Assets
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Impairment of intangible assets and equipment								$ 26,400,000
Ultrasound Imaging Assets \| SSI Ultrasound Imaging Business
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Impairment of intangible assets and equipment								26,400,000
Ultrasound Imaging Assets, Developed Technology \| SSI Ultrasound Imaging Business
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Impairment of intangible assets and equipment								20,600,000
Ultrasound Imaging Assets, Equipment
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Impairment of intangible assets and equipment								5,800,000
Ultrasound Imaging Assets, Equipment \| SSI Ultrasound Imaging Business
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Impairment of intangible assets and equipment								5,800,000
In-process research and development \| Mobidiag
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Impairment of intangible assets and equipment								10,500,000
Finite-Lived Intangible Assets \| Mobidiag
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Finite-lived intangible assets, net								65,800,000
Finite-Lived Intangible Assets \| SSI Ultrasound Imaging Business
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Finite-lived intangible assets, net								0
Property, Plant and Equipment \| Mobidiag
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Impairment of intangible assets and equipment								12,100,000
Property, plant and equipment, net								4,600,000
Indefinite-Lived Intangible Assets \| Mobidiag
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Indefinite-lived intangible assets								$ 26,500,000
Right-of-Use Asset \| Mobidiag
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Impairment of intangible assets and equipment						$ 12,500,000
Credit Agreement
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Borrowed principal under credit agreement	1,169,000,000								1,169,000,000
2028 Senior Notes
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value of debt instrument	397,900,000								397,900,000
2029 Senior Notes
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value of debt instrument	$ 916,800,000								$ 916,800,000
Developed technology
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Intangible asset impairment charges				$ 13,300,000	$ 25,900,000
Finite-lived intangible assets, net				0	13,900,000
Trade names
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Intangible asset impairment charges				400,000	900,000
Finite-lived intangible assets, net				$ 0	$ 500,000