Intangible Assets and Goodwill -Narrative (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Dec. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Jun. 27, 2020	Jun. 29, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible asset and equipment impairment charges	$ 30.2			$ 30.2	$ 443.8
Medical Aesthetics
Finite-Lived Intangible Assets [Line Items]
Intangible asset and equipment impairment charges	30.2	$ 443.8	$ 443.8
Developed technology | Medical Aesthetics
Finite-Lived Intangible Assets [Line Items]
Intangible asset and equipment impairment charges	24.1		373.3
Customer relationships | Medical Aesthetics
Finite-Lived Intangible Assets [Line Items]
Intangible asset and equipment impairment charges	0.9		14.4
Trade names | Medical Aesthetics
Finite-Lived Intangible Assets [Line Items]
Intangible asset and equipment impairment charges	2.0		31.5
Distribution agreement | Medical Aesthetics
Finite-Lived Intangible Assets [Line Items]
Intangible asset and equipment impairment charges	$ 1.2		17.8
Equipment [Member] | Medical Aesthetics
Finite-Lived Intangible Assets [Line Items]
Intangible asset and equipment impairment charges		$ 6.8	$ 6.8