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Fair Value Measurements - Additional Information (Detail) - USD ($) | 3 Months Ended |
--- | --- | ---
Sep. 25, 2021 | Dec. 26, 2020 | Dec. 28, 2019 | Mar. 30, 2019 | Sep. 26, 2020
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Investments, fair value | $ 1,700,000 |  |  |  | $ 11,200,000
Borrowed principal under credit agreement | 1,000,000,000 |  |  |  |
Impairment charge | 1,800,000 | $ 30,200,000 | $ 30,200,000 | $ 685,400,000 |
Medical Aesthetics Business | Acquired intangible assets [Member] |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Impairment charge |  |  |  | 675,600,000 |
Medical Aesthetics Business | Equipment [Member] |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Impairment charge |  |  |  | $ 9,800,000 |
Credit Agreement |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Borrowed principal under credit agreement | 1,390,000,000 |  |  |  |
Significant Unobservable Inputs (Level 3) |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Investments, fair value | 0 |  |  |  | $ 0
2028 Senior Notes |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Fair value of debt instrument | 424,500,000 |  |  |  |
2029 Senior Notes |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Fair value of debt instrument | $ 964,700,000 |  |  |  |

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