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Intangible Assets and Goodwill -Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 28, 2020 | Dec. 28, 2019 | Mar. 30, 2019 | Mar. 28, 2020 | Mar. 30, 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 | 30.2 | $ 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 |  |

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