Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Jun. 27, 2021	Dec. 27, 2020
Long-Term Debt
Total debt	$ 1,150.0	$ 1,274.0
Unamortized debt issuance costs	(14.4)	(22.0)
Current maturities of long-term debt	0.0	(4.0)
Long-term debt	1,135.6	1,248.0
2021 Term Loan
Long-Term Debt
Total debt	650.0	0.0
2019 Term Loan
Long-Term Debt
Total debt	0.0	774.0
Notes
Long-Term Debt
Total debt	$ 500.0	$ 500.0

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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