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

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Increase for accrued, but unpaid interest on the debt instrument for the period.

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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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Fair value amount of debt instrument that was repurchased.

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Amount, after accumulated amortization, of debt premium.

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

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

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Debt - Issuance of 6.5% Senior Secured Notes due 2025 (Details) - USD ($)	1 Months Ended
	Nov. 30, 2017	Sep. 26, 2021	Dec. 27, 2020
Debt Instrument [Line Items]
Principal		$ 300,000,000.0	$ 305,600,000
Carrying Amount		$ 296,500,000	$ 301,500,000
Senior notes \| 6.5% Notes
Debt Instrument [Line Items]
Stated interest rate	6.50%	6.50%
Principal	$ 300,000,000
Debt issuance costs	$ 6,600,000
Carrying Amount		$ 300,000,000
Senior notes \| 7% Senior Notes due 2019
Debt Instrument [Line Items]
Stated interest rate	7.00%
Reacquisition price	$ 385,200,000
Premium	12,000,000
Accrued interest	$ 300,000