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Debt Instrument, Estimated Due At Maturity After Scheduled Principal Payments

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Debt Instrument, Number Of Instruments

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Debt Instrument, Offering Price, Percent Of Face Value

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- Definition

Debt Instrument Percentage Of Redemption Price Fifth Period

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Debt Instrument Percentage Of Redemption Price Fourth Period

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Debt Instrument Percentage Of Redemption Price Third Period

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Debt Instrument Percentage Redemption Price Sixth Period

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Debt Instrument, Periodic Payment, Principal Per Quarter

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Debt Redemption, Premium Paid

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Interest Coverage Ratio

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Leverage Ratio Maximum

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Maximum borrowing under securitization program

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Maximum Range of Present Value of Cash Flow Percentage

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Percentage Price of Principal Amount for Repurchase of Senior Notes

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Term Accounts Receivable Securitization Program

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The amount owed to the reporting entity by counterparties in securitized loan transactions.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Amount, after accumulated amortization, of debt discount.

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Weighted average interest rate of debt outstanding.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Gross amount of debt extinguished.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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The effective interest rate at the end of the reporting period.

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The effective interest rate during the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Borrowings and Credit Arrangements - Additional Information (Detail)								3 Months Ended			12 Months Ended
	Jun. 25, 2022	Sep. 27, 2021 USD ($)	Oct. 15, 2020 USD ($)	Sep. 28, 2020	Dec. 17, 2018 USD ($)	Jan. 19, 2018 USD ($)	Apr. 25, 2016 USD ($)	Sep. 25, 2021 USD ($)	Mar. 27, 2021 USD ($)	Dec. 26, 2020 USD ($) debt_instrument	Sep. 25, 2021 USD ($)	Sep. 26, 2020 USD ($)	Sep. 28, 2019 USD ($)	Jun. 17, 2021	Jun. 11, 2021 USD ($)	Sep. 29, 2018
Debt Instrument [Line Items]
Debt extinguishment loss											$ 21,600,000	$ 0	$ 800,000
Redemption price, percentage				40.00%
Current debt obligations, net of debt discount								$ 313,000,000.0			313,000,000.0	324,900,000
Proceeds from revolving credit line											$ 0	$ 750,000,000.0	$ 480,000,000.0
Minimum \| Mobidiag Oy
Debt Instrument [Line Items]
Interest rate (percent)														6.00%
Maximum \| Mobidiag Oy
Debt Instrument [Line Items]
Interest rate (percent)														7.00%
2018 Amended Credit Facility
Debt Instrument [Line Items]
Leverage ratio maximum											5.00
Interest coverage ratio											3.75
2018 Amended Credit Facility \| Forecast
Debt Instrument [Line Items]
Leverage ratio maximum	4.50
2017 Credit Agreement
Debt Instrument [Line Items]
Debt extinguishment loss										$ (800,000)
Number of debt instruments \| debt_instrument										2
Maximum range of present value of cash flow (percent)										10.00%
Weighted-average interest rate (percent)												2.25%
Interest rate at end of period												1.40%
Prior Credit Agreement
Debt Instrument [Line Items]
Weighted-average interest rate (percent)													3.79%
Interest rate at end of period																3.43%
Securitization Program
Debt Instrument [Line Items]
Basis spread on variable rate							0.80%				0.70%
Interest expense											$ 900,000	$ 3,100,000	$ 7,100,000
Term of accounts receivable securitization program							1 year
Accounts receivable from securitization							$ 200,000,000
Maximum borrowing under securitization program							$ 200,000,000	250,000,000			250,000,000				$ 320,000,000
2021 Credit Agreement \| Subsequent Event
Debt Instrument [Line Items]
Proceeds from revolving credit line		$ 1,500,000,000
Secured Term Loan \| 2018 Amended Term Loan
Debt Instrument [Line Items]
Debt instrument face amount					$ 1,500,000,000
Secured Term Loan \| 2018 Amended Term Loan \| Minimum
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment, Principal Per Quarter					9,375,000
Debt Instrument, Estimated Due At Maturity After Scheduled Principal Payments								$ 1,200,000,000			$ 1,200,000,000
Secured Term Loan \| 2018 Amended Term Loan \| Maximum
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment, Principal Per Quarter					$ 28,125,000
Secured Term Loan \| 2018 Amended Term Loan \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate					1.00%
Secured Term Loan \| 2021 Term Loan \| Subsequent Event
Debt Instrument [Line Items]
Debt instrument face amount		$ 1,500,000,000
Secured Term Loan \| 2021 Term Loan \| Eurocurrency Rate \| Subsequent Event
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Debt Instrument, Periodic Payment, Principal Per Quarter		$ 1,335,000,000
Debt Instrument, Commitment Fee, Percentage		0.15%
Secured Term Loan \| 2021 Term Loan \| Eurocurrency Rate \| Minimum \| Subsequent Event
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment, Principal Per Quarter		$ 3,750,000
Secured Term Loan \| 2021 Term Loan \| Eurocurrency Rate \| Maximum \| Subsequent Event
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment, Principal Per Quarter		18,750,000
Revolver
Debt Instrument [Line Items]
Interest rate (percent)								1.08%			1.08%
Current debt obligations, net of debt discount								$ 0			$ 0	250,000,000.0
Revolver \| 2021 Revolver \| Subsequent Event
Debt Instrument [Line Items]
Line of credit borrowing capacity		$ 2,000,000,000
Line of Credit \| 2018 Amended Revolver
Debt Instrument [Line Items]
Line of credit borrowing capacity					$ 1,500,000,000
Line of Credit \| 2018 Amended Revolver \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate					1.00%
Senior Notes \| 2025 Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount								$ 950,000,000			$ 950,000,000
Debt extinguishment loss									$ (21,600,000)
Interest rate (percent)								4.375%			4.375%
Interest expense									5,800,000
Extinguishment of Debt, Amount			$ 970,800,000
Debt Redemption, Premium Paid			$ 20,800,000
Debt Issuance Costs, Net									7,900,000
Debt Instrument, Unamortized Discount									$ 6,400,000
Senior Notes \| 2028 Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount								$ 400,000,000			$ 400,000,000
Interest rate (percent)								4.625%			4.625%
Proceeds from issuance of senior long-term debt						$ 1,000,000,000
Offering price, percent of face value								100.00%			100.00%
Percentage of redemption price, third period								102.312%			102.312%
Percentage of redemption price, fourth period								101.541%			101.541%
Percentage of redemption price, fifth period								100.77%			100.77%
Percentage redemption price, sixth period								100.00%			100.00%
Percentage price of principal amount for repurchase of senior notes											101.00%
Senior Notes \| 2029 Senior Notes
Debt Instrument [Line Items]
Interest rate (percent)								3.25%			3.25%
Redemption price, percentage				100.00%
Senior notes principal amount								$ 950,000,000			$ 950,000,000
Senior Notes \| 2029 Senior Notes \| Period One
Debt Instrument [Line Items]
Redemption price, percentage				103.25%
Senior Notes \| 2029 Senior Notes \| Period Two
Debt Instrument [Line Items]
Redemption price, percentage				101.625%
Senior Notes \| 2029 Senior Notes \| Period Three
Debt Instrument [Line Items]
Redemption price, percentage				100.813%
Senior Notes \| 2029 Senior Notes \| Period Four
Debt Instrument [Line Items]
Redemption price, percentage				100.00%
Senior Notes \| 2029 Senior Notes \| Period Five
Debt Instrument [Line Items]
Redemption price, percentage				101.00%
Securitization Program
Debt Instrument [Line Items]
Repayments of Debt								250,000,000
Current debt obligations, net of debt discount								$ 248,500,000			$ 248,500,000	$ 0
Debt, Weighted Average Interest Rate								0.80%			0.80%
Debt Instrument, Interest Rate, Effective Percentage								0.80%			0.80%