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Intangible Assets -Narrative (Details) - USD ($) number in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 30, 2019 | Mar. 31, 2018 | Mar. 30, 2019 | Mar. 31, 2018 | Sep. 29, 2018 | Jul. 31, 2018
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible asset and equipment impairment charges | $ 443,800,000 |  | $ 443,800,000 | $ 46,000,000 |  |
Goodwill impairment charge | 0 | $ 685,700,000 | 0 | $ 685,700,000 |  |
Goodwill | 2,564,500,000 |  | 2,564,500,000 |  | $ 2,533,200,000 |
Medical Aesthetics [Domain] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible asset and equipment impairment charges | $ 443,800,000 |  |  |  |  |
Impairment discount rate | 0.00% |  |  |  |  |
Goodwill impairment charge |  | $ 685,700,000 |  |  |  |
Goodwill | $ 0 |  | $ 0 |  |  |
Developed Technology [Member] | Medical Aesthetics [Domain] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible asset and equipment impairment charges | 373,300,000 |  |  |  |  |
Customer Relationships [Member] | Medical Aesthetics [Domain] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible asset and equipment impairment charges | 14,400,000 |  |  |  |  |
Trade Names [Member] | Medical Aesthetics [Domain] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible asset and equipment impairment charges | 31,500,000 |  |  |  |  |
Distribution agreement [Member] | Medical Aesthetics [Domain] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible asset and equipment impairment charges | 17,800,000 |  |  |  |  |
Property, Plant and Equipment [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible asset and equipment impairment charges | 6,800,000 |  |  |  |  |
Property, Plant and Equipment [Member] | Medical Aesthetics [Domain] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible asset and equipment impairment charges | 6,800,000 |  |  |  |  |
Goodwill [Member] | Medical Aesthetics [Domain] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Impairment discount rate |  | 0.00% |  |  |  |
Faxitron [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Research and Development in Process | $ 2,600,000 |  |  |  |  |
Goodwill |  |  |  |  |  | $ 42,400,000

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