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Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended					12 Months Ended
	Sep. 24, 2022 USD ($) Customer	Sep. 25, 2021 USD ($)	Dec. 26, 2020 USD ($)	Sep. 26, 2020	Dec. 28, 2019 USD ($)	Sep. 24, 2022 USD ($) Customer	Sep. 25, 2021 USD ($)	Sep. 26, 2020 USD ($)	Dec. 25, 2021 USD ($)	Nov. 29, 2021 USD ($)	Aug. 23, 2020 USD ($)
Significant Accounting Policies [Line Items]
Impairment charge		$ 1,800,000	$ 30,200,000		$ 30,200,000
Cash Equivalents Maturity Period						three months or less
Gross Carrying Value	$ 5,518,200,000	5,578,100,000				$ 5,518,200,000	$ 5,578,100,000
Accumulated Amortization	4,237,600,000	3,918,900,000				4,237,600,000	3,918,900,000
Goodwill	3,236,500,000	3,281,600,000				3,236,500,000	3,281,600,000
Principal amount of borrowings	1,000,000,000					1,000,000,000
Notional Amount	458,100,000					$ 458,100,000
Product Warranty Term						1 year
Advertising cost						$ 78,100,000	9,800,000	$ 15,600,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax						0	500,000
Notional amount	1,000,000,000					1,000,000,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax						0	500,000	2,300,000
Grants Receivable, Current	$ 20,500,000					$ 20,500,000
Customer Concentration Risk
Significant Accounting Policies [Line Items]
Number of customers with balance greater than specified percentage | Customer	0					0
Trade Names [Member]
Significant Accounting Policies [Line Items]
Gross Carrying Value	$ 265,200,000	268,100,000				$ 265,200,000	268,100,000
Accumulated Amortization	203,300,000	191,800,000				203,300,000	191,800,000
Developed Technology Rights [Member]
Significant Accounting Policies [Line Items]
Gross Carrying Value	4,565,600,000	4,597,700,000				4,565,600,000	4,597,700,000
Accumulated Amortization	3,458,200,000	3,184,200,000				3,458,200,000	3,184,200,000
In Process Research and Development [Member]
Significant Accounting Policies [Line Items]
Gross Carrying Value	33,000,000.0	71,600,000				33,000,000.0	71,600,000
Accumulated Amortization	0	$ 0				$ 0	$ 0
In Process Research and Development [Member]
Significant Accounting Policies [Line Items]
Impairment charge	27,700,000
Minimum
Significant Accounting Policies [Line Items]
Intangible assets useful life						5 years
Minimum | Accounts receivable [Member] | Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, percentage						10.00%
Minimum | Total revenues [Member] | Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, percentage				10.00%		10.00%	10.00%
Maximum
Significant Accounting Policies [Line Items]
Intangible assets useful life						30 years
Interest rate caps - derivative
Significant Accounting Policies [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax							$ 500,000
Interest Rate Swap
Significant Accounting Policies [Line Items]
Interest rate caps - derivative	$ 38,900,000					$ 38,900,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax						0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax						$ 44,000,000	9,400,000	(27,600,000)
Acessa Health
Significant Accounting Policies [Line Items]
Goodwill											$ 49,100,000
Bolder Surgical
Significant Accounting Policies [Line Items]
Goodwill										$ 68,800,000
Bolder Surgical | Trade Names [Member]
Significant Accounting Policies [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill									$ 1,400,000
Foreign Exchange Forward [Member]
Significant Accounting Policies [Line Items]
Derivative contract period, or less						1 year
Interest rate caps - derivative
Significant Accounting Policies [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax							500,000	2,300,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax						$ 0	$ 400,000	$ (500,000)

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