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Income Taxes - Additional Information (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 25, 2021 | Mar. 30, 2019 | Sep. 25, 2021 | Sep. 26, 2020
Income Taxes [Line Items] |  |  |  |
Decrease in valuation allowance |  |  | $ (2,800,000) |
Net operating losses | $ 33,000,000 |  | 33,000,000 |
Federal net operating loss expected to be expired unutilized | 1,700,000 |  | 1,700,000 |
State net operating loss expected to be expired unutilized | 48,000,000 |  | 48,000,000 |
Foreign net operating loss expected to be expired unutilized | 900,000 |  | 900,000 |
Gross unrecognized tax benefits, excluding interest | 212,800,000 |  | 212,800,000 | $ 197,100,000
Unrecognized tax benefit that would impact effective tax rate | 197,000,000 |  | 197,000,000 | 184,900,000
Change in gross unrecognized tax benefits |  |  |  | 15,700,000
Interest accrued on unrecognized tax benefits | 13,700,000 |  | 13,700,000 | 11,900,000
Increase to income tax expense adoption of ASU 2016-16 |  |  | 27,800,000 |
Decrease in deferred tax liabilities due to ASU 2016-16 |  |  | 37,700,000 |
Increase to Net Income resulted from adoption of ASU 2016-16 |  |  | $ 9,900,000 |
Increase to Earnings per Share resulted from adoption of ASU 2016-16 |  |  | $ 0.04 |
state loss carryforward expected to unutilize | 26,200,000 |  | $ 26,200,000 |
Capital losses | 52,000,000.0 |  | 52,000,000.0 | $ 57,000,000.0
Gross state loss carryforwards | 26,200,000 |  | 26,200,000 |
Gross foreign loss carryforwards | 33,000,000 |  | 33,000,000 |
Medical Aesthetics |  |  |  |
Income Taxes [Line Items] |  |  |  |
Other Tax Expense (Benefit) |  |  | 313,400,000 |
General and Administrative Expense |  |  |  |
Income Taxes [Line Items] |  |  |  |
Non-income tax loss |  | $ (11,200,000) |  |
Other Noncurrent Assets |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income Tax Receivable Reclassification | 310,000,000 |  |  |
Prepaid Expenses and Other Current Assets |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income Tax Receivable Reclassification | (404,900,000) |  |  |
Net Operating Losses Carryforwards |  |  |  |
Income Taxes [Line Items] |  |  |  |
Amount with unlimited carry forward periods |  |  | 235,400,000 |
Tax Credit Carryforward |  |  |  |
Income Taxes [Line Items] |  |  |  |
Amount with unlimited carry forward periods |  |  | 2,300,000 |
Maximum |  |  |  |
Income Taxes [Line Items] |  |  |  |
Decrease in unrecognized tax benefits is reasonably possible | 13,000,000 |  | 13,000,000 |
Domestic Tax Authority |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating losses | 89,100,000 |  | 89,100,000 |
Credit carry forwards | 4,300,000 |  | 4,300,000 |
State and Local Jurisdiction |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating losses | 135,000,000 |  | 135,000,000 |
Credit carry forwards | 6,000,000 |  | 6,000,000 |
Foreign Tax Authority |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating losses | 263,200,000 |  | 263,200,000 |
Credit carry forwards | $ 500,000 |  | $ 500,000 |

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