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v3.23.3

Fair Value Measurements - Additional Information (Detail) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Jul. 01, 2023 | Sep. 24, 2022 | Jun. 25, 2022 | Mar. 26, 2022 | Sep. 25, 2021 | Sep. 30, 2023 | Sep. 24, 2022 | Sep. 25, 2021 | Jul. 02, 2023
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Investments, fair value | $ 35,300,000 |  | $ 65,300,000 |  |  |  | $ 35,300,000 | $ 65,300,000 |  |
Impairment charge |  | $ 186,900,000 |  |  |  |  |  |  |  |
Loss on assets held-for-sale | 51,700,000 |  |  |  |  |  | 51,700,000 | 0 | $ 0 |
Property, plant and equipment, net | 517,000,000.0 |  | 481,600,000 |  |  | $ 564,700,000 | 517,000,000.0 | 481,600,000 | 564,700,000 |
Impairment of intangible assets and equipment |  | 174,800,000 |  |  |  |  | 44,300,000 | 27,700,000 | $ 0 |
ultrasound imaging assets |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment charge |  | 26,400,000 |  |  |  |  |  |  |  |
ultrasound imaging assets, developed technology |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment charge |  | 20,600,000 |  |  |  |  |  |  |  |
ultrasound imaging assets, equipment |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment charge |  | 5,800,000 |  |  |  |  |  |  |  |
In Process Research and Development [Member] |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment charge |  | 10,500,000 | 27,700,000 |  |  |  |  |  |  |
Developed Technology Rights [Member] |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment charge |  |  | 8,200,000 | $ 9,200,000 |  |  |  |  |  |
Equity Securities, Investment Summary |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment charge |  |  | 4,000,000 |  | $ 4,300,000 | $ 1,800,000 |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net |  | 65,800,000 |  |  |  |  |  |  |  | $ 0
Property, Plant and Equipment [Member] |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment charge |  | 12,100,000 |  |  |  |  |  |  |  |
Property, plant and equipment, net |  | 4,600,000 |  |  |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) |  | $ 26,500,000 |  |  |  |  |  |  |  |
Credit Agreement |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Borrowed principal under credit agreement | 1,490,000,000 |  |  |  |  |  | 1,490,000,000 |  |  |
Significant Unobservable Inputs (Level 3) |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Investments, fair value | 0 |  | $ 0 |  |  |  | 0 | $ 0 |  |
2028 Senior Notes |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of debt instrument | 368,000,000 |  |  |  |  |  | 368,000,000 |  |  |
2029 Senior Notes |  |  |  |  |  |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of debt instrument | $ 803,100,000 |  |  |  |  |  | $ 803,100,000 |  |  |

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