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v3.10.0.1

Fair Value Measurements - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Mar. 31, 2018 | Jul. 01, 2017 | Jun. 30, 2018 | Jul. 01, 2017 | Sep. 30, 2017 | Mar. 22, 2017
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |
Impairment of indefinite intangible assets | $ 0 |  | $ 0 | $ 46,000,000 | $ 0 |  |
Goodwill impairment charge | 0 |  | $ 0 | 685,700,000 | $ 0 |  |
Carrying value of goodwill | 2,493,400,000 |  |  | 2,493,400,000 |  | $ 3,171,200,000 |
Borrowed principal | 1,000,000,000 |  |  | 1,000,000,000 |  |  |
Credit Agreement |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |
Borrowed principal | 1,700,000,000 |  |  | 1,700,000,000 |  |  |
Securitization Program |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |
Borrowed principal | 219,800,000 |  |  | 219,800,000 |  |  |
2025 Senior Notes |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |
Fair value of debt instrument | 907,800,000 |  |  | 907,800,000 |  |  |
2028 Senior Notes |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |
Fair value of debt instrument | 377,300,000 |  |  | 377,300,000 |  |  |
Medical Aesthetics |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |
Goodwill impairment charge |  | $ 685,700,000 |  |  |  |  |
Carrying value of goodwill | 0 |  |  | 0 |  |  |
Carrying value of indefinite-lived intangibles | $ 0 |  |  | $ 0 |  |  |
In-process research and development | Medical Aesthetics |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |
Impairment of indefinite intangible assets |  | 46,000,000 |  |  |  |  |
Cynosure |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |
Carrying value of goodwill |  |  |  |  |  |  | $ 685,700,000
Cynosure | Medical Aesthetics |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |
Goodwill impairment charge |  | $ 685,700,000 |  |  |  |  |

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