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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 Issuance Costs, Reallocated Upon Debt Modification

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Debt instrument remaining to be redeemed

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Deferred Taxes, Reacquisition of Equity Component

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Direct Third Party Costs interest Expense

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Leverage Ratio Maximum

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Make Whole Provision

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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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Offering Price of Principal Amount

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Percentage Price of Principal Amount for Repurchase of Senior Notes

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Represents the aggregate outstanding principal of amounts borrowed under the Credit Agreement.

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Redemption price as percentage of principal amount plus accrued and unpaid interest.

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Term Accounts Receivable Securitization Program

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Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.

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

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The price per share of the conversion feature embedded in the debt instrument.

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

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

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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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Fair value amount of debt instrument that was repurchased.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Borrowings and Credit Arrangements - Additional Information (Detail)						3 Months Ended							6 Months Ended	12 Months Ended
	Jun. 25, 2022	Dec. 17, 2018 USD ($)	Jan. 19, 2018 USD ($)	Dec. 19, 2016	Nov. 09, 2016	Dec. 29, 2018 USD ($) debt_instrument	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 30, 2017 USD ($) $ / shares	Sep. 30, 2017 USD ($)	Jul. 01, 2017 USD ($) $ / shares	Dec. 31, 2016 USD ($)	Apr. 01, 2017 USD ($)	Sep. 28, 2019 USD ($)	Sep. 29, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jun. 29, 2019 USD ($)	Mar. 30, 2019 USD ($)	Feb. 15, 2018 USD ($)	Oct. 10, 2017 USD ($)	Oct. 03, 2017 USD ($)	Sep. 24, 2016	Feb. 14, 2013 USD ($)	Feb. 29, 2012 USD ($)	Nov. 18, 2010 USD ($)	Dec. 10, 2007 USD ($)
Debt Instrument [Line Items]
Debt instrument face amount											$ 100,000,000.0
Proceeds from amounts borrowed under revolving credit line														$ 480,000,000.0	$ 1,150,000,000.0	$ 345,000,000.0
Debt extinguishment loss								$ 44,900,000			2,600,000			800,000	45,900,000	3,200,000
Payment of debt issuance costs														2,700,000	23,500,000	0
Principal amount of borrowings														1,000,000,000.0
Repayments of convertible debt											269,100,000	$ 12,300,000		0	546,200,000	396,200,000
Current portion of long-term debt														$ 271,400,000	599,700,000
Conversion premium													$ 8,700,000
Deferred taxes, reacquisition of equity component									$ 3,800,000
Adjustments to APIC, equity component of convertible debt									13,400,000						$ (40,700,000)	$ (33,900,000)
Accretion expense											$ 18,500,000
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%
Third-party costs recorded as interest						$ 800,000
Payment of debt issuance costs						$ 1,900,000
Proceeds from issuance of debt														$ 1,800,000,000
Weighted-average interest rate (percent)															3.23%
Interest rate at end of period															3.74%
2017 Revolver
Debt Instrument [Line Items]
Proceeds from amounts borrowed under revolving credit line							$ 250,000,000.0
Prior Credit Agreement
Debt Instrument [Line Items]
Debt extinguishment loss									$ 1,000,000.0
Maximum range of present value of cash flow (percent)									10.00%
Third-party costs recorded as interest									$ 1,700,000
Payment of debt issuance costs									4,900,000
Repayments of secured debt														$ 1,320,000,000
Weighted-average interest rate (percent)																2.39%
Interest rate at end of period																						2.73%
2022 Senior Notes
Debt Instrument [Line Items]
Debt extinguishment loss								$ 44,900,000
Maximum range of present value of cash flow (percent)								10.00%
Third-party costs recorded as interest								$ 2,600,000
Debt issuance costs reallocated upon debt modification								1,500,000
Debt discount reallocated upon debt modification								1,500,000
Convertible Notes \| 2007 Notes
Debt Instrument [Line Items]
Debt instrument face amount																							$ 370,000,000.0	$ 500,000,000.0	$ 450,000,000.0	$ 1,725,000,000
Interest rate (percent)																										2.00%
2012 Notes
Debt Instrument [Line Items]
Debt instrument face amount									39,300,000
Repayments of convertible debt							$ 243,300,000		52,800,000
Repurchase amount								200,500,000
Deferred taxes, reacquisition of equity component								12,000,000.0
Debt instrument remaining to be redeemed									$ 5,500,000
Adjustments to APIC, equity component of convertible debt								$ 42,800,000
Conversion price (in dollars per share) \| $ / shares									$ 31.175
2012 Notes \| March 1, 2018
Debt Instrument [Line Items]
Redemption price as percentage of principle amount plus accrued and unpaid interest														100.00%
2012 Notes \| March 6, 2018
Debt Instrument [Line Items]
Redemption price as percentage of principle amount plus accrued and unpaid interest														100.00%
2013 Notes
Debt Instrument [Line Items]
Debt instrument face amount									$ 300,000
Repayments of convertible debt									244,100,000
Repurchase amount									$ 201,700,000
2012 Notes
Debt Instrument [Line Items]
Debt instrument face amount														$ 17,900,000
Debt extinguishment loss														(900,000)
Repayments of convertible debt										$ 23,100,000
Conversion price (in dollars per share) \| $ / shares											$ 31.175
2013 Notes
Debt Instrument [Line Items]
Debt instrument face amount														68,000,000.0
Debt extinguishment loss														(2,300,000)
Repayments of convertible debt										82,900,000
Conversion price (in dollars per share) \| $ / shares											$ 38.59
Accretion expense										13,300,000
Securitization Program
Debt Instrument [Line Items]
Line of credit borrowing capacity														$ 250,000,000.0				$ 225,000,000.0
Basis spread on variable rate														0.70%
Weighted-average interest rate (percent)														3.08%
Interest expense														$ 7,100,000	$ 5,400,000	$ 3,300,000
Principal amount of borrowings														$ 234,000,000.0
Term of accounts receivable securitization program														1 year
Accounts receivable from securitization														$ 200,000,000.0
Maximum borrowing under securitization program														$ 200,000,000.0
Interest rate at end of period														2.76%
2012 and 2013 Notes
Debt Instrument [Line Items]
Debt extinguishment loss										$ (600,000)
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
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		1.375%
Secured Term Loan \| 2017 Term Loan
Debt Instrument [Line Items]
Debt instrument face amount																					$ 1,500,000,000
Line of Credit \| 2018 Amended Revolver
Debt Instrument [Line Items]
Line of credit borrowing capacity		$ 1,500,000,000
Proceeds from amounts borrowed under revolving credit line		$ 350,000,000
Line of Credit \| 2018 Amended Revolver \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate		1.375%
Line of Credit \| 2017 Revolver
Debt Instrument [Line Items]
Line of credit borrowing capacity																					$ 1,500,000,000
Senior Notes \| 2025 Senior Notes
Debt Instrument [Line Items]
Interest rate (percent)														4.375%
Senior notes principal amount			$ 600,000,000																	$ 350,000,000
Principal amount of borrowings														$ 950,000,000
Offering price, percent of face value			100.00%											100.00%						100.00%
Redemption price, percentage														35.00%
Percentage of redemption price, second period														104.375%
Percentage of redemption price, third period														102.188%
Percentage of redemption price, fourth period														101.094%
Percentage redemption price, sixth period														100.00%
Percentage price of principal amount for repurchase of senior notes														101.00%
Senior Notes \| 2028 Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount														$ 400,000,000
Interest rate (percent)														4.625%
Proceeds from issuance of senior long-term debt			$ 1,000,000,000.0
Offering price, percent of face value														100.00%
Redemption price, percentage														35.00%
Percentage of redemption price, second period														104.625%
Percentage of redemption price, third period														102.312%
Percentage of redemption price, fourth period														101.541%
Percentage of redemption price, fifth period														100.77%
Percentage redemption price, sixth period														100.00%
Percentage price of principal amount for repurchase of senior notes														101.00%
Senior Notes \| 2022 Senior Notes
Debt Instrument [Line Items]
Interest rate (percent)															5.25%
Senior notes principal amount																			$ 1,000,000,000.0
Offering price of principal amount																			1,040,000,000.00
Make whole provision																			$ 37,700,000
November 18, 2010 Original Notes \| Convertible Notes
Debt Instrument [Line Items]
Debt instrument face amount																									$ 450,000,000.0
Interest rate (percent)																									2.00%
February 29, 2012 Original Notes \| Convertible Notes
Debt Instrument [Line Items]
Debt instrument face amount																								$ 500,000,000.0
Interest rate (percent)																								2.00%
February 14, 2013 Original Notes \| Convertible Notes
Debt Instrument [Line Items]
Debt instrument face amount																							$ 370,000,000.0
Interest rate (percent)																							2.00%
Convertible Notes Payable
Debt Instrument [Line Items]
Interest expense															$ 7,100,000	$ 41,000,000.0
Convertible Notes Payable \| 2012 and 2013 Notes
Debt Instrument [Line Items]
Deferred taxes, reacquisition of equity component														$ 31,100,000
Adjustments to APIC, equity component of convertible debt														58,600,000
Securitization Program
Debt Instrument [Line Items]
Current portion of long-term debt														$ 234,000,000.0	$ 225,000,000.0		$ 234,000,000.0
Convertible Debt \| 2042 Notes
Debt Instrument [Line Items]
Interest rate (percent)							2.00%
Convertible Debt \| 2010 Notes
Debt Instrument [Line Items]
Redemption price, percentage				100.00%	100.00%