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Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant and Equipment (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 27, 2025	Jul. 01, 2023	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,352.4		$ 1,352.4	$ 1,266.5
Less - accumulated depreciation and amortization	(792.8)		(792.8)	(728.7)
Property, plant and equipment, net	559.6		559.6	537.8	$ 517.0
Impairment of intangible assets and equipment			42.5	5.6	$ 44.3
Facility Closing
Property, Plant and Equipment [Line Items]
Accelerated depreciation	9.8
Mobidiag
Property, Plant and Equipment [Line Items]
Impairment of intangible assets and equipment		$ 12.1
Ultrasound Imaging Assets
Property, Plant and Equipment [Line Items]
Impairment of intangible assets and equipment		$ 5.8
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 383.8		$ 383.8	378.1
Equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	3 years		3 years
Equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	10 years		10 years
Equipment under customer usage agreements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 586.8		$ 586.8	523.1
Equipment under customer usage agreements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	3 years		3 years
Equipment under customer usage agreements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	8 years		8 years
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 256.1		$ 256.1	247.1
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	20 years		20 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	35 years		35 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 49.1		$ 49.1	44.0
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	40.9		40.9	40.8
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 26.5		$ 26.5	24.6
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	5 years		5 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	7 years		7 years
Finance lease right-of-use asset
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 9.2		$ 9.2	$ 8.8

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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