Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 27, 2020	Dec. 29, 2019
Debt Instrument [Line Items]
Total debt	$ 1,274.0	$ 1,278.0
Unamortized debt issuance costs	(22.0)	(23.3)
Current portion of long-term debt	(4.0)	0.0
Long-term debt	1,248.0	1,254.7
Term Loan Facility
Debt Instrument [Line Items]
Total debt	774.0	778.0
Notes
Debt Instrument [Line Items]
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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Amount of unamortized debt discount (premium) and debt issuance costs.

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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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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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