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Summary of Significant Accounting Policies - Rollforward of Goodwill Activity by Reportable Segments (Details) $ in Millions	12 Months Ended
	Sep. 27, 2025 USD ($)
Goodwill [Roll Forward]
Balance at September 28, 2024	$ 3,443.1
Gynesonics acquisition	191.0
Foreign currency and other adjustments	6.5
Balance at September 27, 2025	3,640.6
Diagnostics
Goodwill [Roll Forward]
Balance at September 28, 2024	1,365.8
Gynesonics acquisition	0.0
Foreign currency and other adjustments	2.9
Balance at September 27, 2025	1,368.7
Breast Health
Goodwill [Roll Forward]
Balance at September 28, 2024	934.6
Gynesonics acquisition	0.0
Foreign currency and other adjustments	3.8
Balance at September 27, 2025	938.4
GYN Surgical
Goodwill [Roll Forward]
Balance at September 28, 2024	1,134.7
Gynesonics acquisition	191.0
Foreign currency and other adjustments	(0.2)
Balance at September 27, 2025	1,325.5
Skeletal Health
Goodwill [Roll Forward]
Balance at September 28, 2024	8.0
Gynesonics acquisition	0.0
Foreign currency and other adjustments	0.0
Balance at September 27, 2025	$ 8.0

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