The percentage of amortization rate per year under the debt instrument arrangement.

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Represents the range of consolidated interest leverage ratio, as defined in the agreement.

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Represents the issuance price as a percentage of face value of debt issued.

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Represents the debt instrument issuance price, expressed as a percentage of the principal amount (face value) of the debt instrument.

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Face (par) amount of the original debt instrument that was redeemed.

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The percentage of repayment fee on the amount repaid under the debt instrument agreement.

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Represents the number of quarter consolidated interest coverage ratio to be maintained.

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

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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Net increase or decrease in the carrying amount of the debt instrument for the period.

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

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Percentage of principal amount of debt redeemed.

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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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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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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 of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. 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 from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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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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Indebtedness divided by net capital.

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The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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Long-Term Debt, Activity (Details) $ in Thousands			3 Months Ended
Long-Term Debt, Activity (Details) $ in Thousands	Oct. 10, 2019 USD ($)	Sep. 26, 2019 USD ($)	Mar. 28, 2020 USD ($) item	Mar. 30, 2019 USD ($)	Dec. 28, 2019 USD ($)	Sep. 28, 2019	Dec. 29, 2018	Nov. 20, 2017 USD ($)	Apr. 03, 2017 USD ($)
Information related to senior notes
Net deferred debt financing costs			$ 20,102		$ 20,869
Outstanding principal			1,998,875
Long-term debt			1,974,861		1,874,158
Borrowings under revolving credit facility			160,000	$ 40,000
Repayments of long-term debt			1,125
Accrued Interest
Accrued interest			$ 26,800		21,400
Tranche B Term Loans due 2022 \| LIBOR
Information related to senior notes
Interest rate added to variable base rate (as a percent)			2.50%
Tranche B Term Loans due 2022 \| Base rate
Information related to senior notes
Interest rate added to variable base rate (as a percent)			1.00%
Revolving credit loans
Information related to senior notes
Outstanding principal			$ 100,000
Borrowings under revolving credit facility			100,000
Outstanding letters of credit			1,600
Available borrowing capacity			$ 598,400
Commitment fees (as a percent)			0.50%
Number of quarters consolidated leverage ratio to be maintained \| item			4
Number of quarters consolidated interest coverage ratio to be maintained \| item			4
Revolving credit loans \| Minimum
Information related to senior notes
Consolidated leverage ratio			1.00
Consolidated interest leverage ratio			1.00
Revolving credit loans \| Maximum
Information related to senior notes
Consolidated leverage ratio			7.00
Consolidated interest leverage ratio			1.75
Revolving credit loans \| LIBOR \| Minimum
Information related to senior notes
Interest rate added to variable base rate (as a percent)			1.25%
Revolving credit loans \| LIBOR \| Maximum
Information related to senior notes
Interest rate added to variable base rate (as a percent)			1.75%
Revolving credit loans \| Base rate \| Minimum
Information related to senior notes
Interest rate added to variable base rate (as a percent)			0.25%
Revolving credit loans \| Base rate \| Maximum
Information related to senior notes
Interest rate added to variable base rate (as a percent)			0.75%
Letters of credit facility
Information related to senior notes
Maximum capacity available			$ 50,000
Fronting fee (as a percent)			0.25%
Incremental term loan \| Minimum
Information related to senior notes
Senior secured leverage ratio			1.00
Incremental term loan \| Maximum
Information related to senior notes
Senior secured leverage ratio			4.00
4.625% Senior notes due 2021
Information related to senior notes
Interest rate (as a percent)	4.625%		4.625%
Interest rate at period end (as a percent)			4.625%
Redeemed amount	$ 700,000
5.25% Senior Notes due 2025
Information related to senior notes
Outstanding principal			$ 900,000		900,000
Interest rate (as a percent)			5.25%			5.25%	5.25%	5.25%	5.25%
Principal amount of notes								$ 400,000	$ 500,000
Debt issuance price (as a percent)								101.00%	100.00%
5.25% Senior Notes due 2025 \| Redemption period beginning April 1, 2020
Information related to senior notes
Redemption price (as a percent)			103.9375%
5.25% Senior Notes due 2025 \| Redemption period on or after April 1, 2023
Information related to senior notes
Redemption price (as a percent)			100.00%
5.25% Senior Notes due 2027
Information related to senior notes
Outstanding principal			$ 550,000		550,000
Interest rate (as a percent)	5.25%		5.25%	5.25%		5.25%
Proceeds from Issuance of Senior Long-term Debt	$ 550,000
Interest rate at period end (as a percent)			5.25%
Principal amount of notes		$ 550,000
Percentage of face value		100.00%
Percentage of principal amount redeemed or which may redeem			40.00%
5.25% Senior Notes due 2027 \| From March 1st 2022 To February 28th 2025
Information related to senior notes
Redemption price (as a percent)			103.938%
5.25% Senior Notes due 2027 \| On Or After March 1st 2025
Information related to senior notes
Redemption price (as a percent)			100.00%
Tranche B Term Loan 2026
Information related to senior notes
Outstanding principal			$ 448,875		$ 450,000
Increase in principal of debt	$ 450,000
Amortization rate	1.00%
Repayment fee percentage			1.00%