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v3.21.2

Summary of Significant Accounting Policies - Schedule of Intangible Assets (Detail) - USD ($) | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 25, 2021 | Dec. 26, 2020 | Dec. 28, 2019 | Mar. 30, 2019 | Sep. 28, 2019 | Jun. 26, 2021 | Mar. 27, 2021 | Sep. 26, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Gross Carrying Value | $ 5,582,100,000 |  |  |  |  |  |  | $ 4,931,100,000
Accumulated Amortization | 3,922,900,000 |  |  |  |  |  |  | 3,623,600,000
Impairment charge | 1,800,000 | $ 30,200,000 | $ 30,200,000 | $ 685,400,000 |  |  |  |
Developed technology |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Gross Carrying Value | 4,597,700,000 |  |  |  |  |  |  | 4,054,000,000
Accumulated Amortization | 3,184,200,000 |  |  |  |  |  |  | 2,907,200,000
In-process research and development |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Gross Carrying Value | 71,600,000 |  |  |  |  |  |  | 0
Accumulated Amortization | 0 |  |  |  |  |  |  | 0
Customer relationships |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Gross Carrying Value | 591,700,000 |  |  |  |  |  |  | 549,100,000
Accumulated Amortization | 510,100,000 |  |  |  |  |  |  | 477,800,000
Trade names |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Gross Carrying Value | 268,100,000 |  |  |  |  |  |  | 245,500,000
Accumulated Amortization | 191,800,000 |  |  |  |  |  |  | 181,200,000
Non-competition agreements |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Gross Carrying Value | 1,500,000 |  |  |  |  |  |  | 1,500,000
Accumulated Amortization | 1,500,000 |  |  |  |  |  |  | 1,300,000
Business licenses |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Gross Carrying Value | 2,500,000 |  |  |  |  |  |  | 2,400,000
Accumulated Amortization | 2,500,000 |  |  |  |  |  |  | 2,300,000
Acquired intangible assets [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Gross Carrying Value | 5,533,100,000 |  |  |  |  |  |  | 4,852,500,000
Accumulated Amortization | 3,890,100,000 |  |  |  |  |  |  | 3,569,800,000
Internal-use software [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Gross Carrying Value | 23,500,000 |  |  |  |  |  |  | 51,800,000
Accumulated Amortization | 17,200,000 |  |  |  |  |  |  | 43,200,000
Capitalized software [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Gross Carrying Value | 25,500,000 |  |  |  |  |  |  | 26,800,000
Accumulated Amortization | $ 15,600,000 |  |  |  |  |  |  | 10,600,000
Medical Aesthetics |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Impairment charge |  |  | $ 30,200,000 |  |  |  |  |
Medical Aesthetics | Developed Technology |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Impairment charge |  |  |  |  | $ 576,900,000 |  |  |
Medical Aesthetics | Customer Relationships |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Impairment charge |  |  |  |  | 22,400,000 |  |  |
Medical Aesthetics | Trade names |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Impairment charge |  |  |  |  | 48,600,000 |  |  |
Medical Aesthetics | Property, Plant and Equipment [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Impairment charge |  |  |  |  | $ 9,800,000 |  |  |
Mobidiag Oy | In-process research and development |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  | $ 74,000,000 |  |
Mobidiag Oy | Trade names |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  | 20,000,000 |  |
Mobidiag Oy | Customer Relationships |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  | 20,900,000 |  |
Mobidiag Oy | Developed Technology |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  | $ 285,000,000 |  |
Biotheranostics | Trade names |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  |  | $ 2,100,000 |
Biotheranostics | Developed Technology |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  |  | 160,300,000 |
Diagenode | Customer Relationships |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  |  | 9,200,000 |
Diagenode | Developed Technology |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  |  | 69,800,000 |
Somatex | Customer relationships |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  |  | 1,200,000 |
Somatex | Trade names |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  |  | 900,000 |
Somatex | Developed Technology |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  |  | $ 38,000,000 |
Acessa Health | Trade names |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  |  |  | 1,200,000
Acessa Health | Developed Technology |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets: |  |  |  |  |  |  |  | $ 127,000,000

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