Derivative Financial Instruments - Fair Values of Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 26, 2020	Dec. 27, 2019
Derivatives, Fair Value [Line Items]
Foreign currency forward contracts, assets	$ 1.5	$ 1.7
Interest rate swaps, asset	0.0	0.0
Total	1.5	1.7
Foreign currency forward contracts, Liability	2.3	0.7
Price Risk Derivative Liabilities, at Fair Value	3.1	0.0
Price Risk Derivative Assets, at Fair Value	0.0	0.0
Interest rate swaps, liability	56.7	30.3
Total	62.1	31.0
Cash Flow Hedge Gain (Loss) to be Reclassified during the next 8 years	57.8
Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Foreign currency forward contracts, assets	1.5	1.7
Interest rate swaps, asset	0.0	0.0
Total	1.5	1.7
Price Risk Derivative Assets, at Fair Value	0.0	0.0
Accounts payable and accrued expenses
Derivatives, Fair Value [Line Items]
Foreign currency forward contracts, Liability	2.3	0.7
Price Risk Derivative Liabilities, at Fair Value	1.6	0.0
Interest rate swaps, liability	0.0	0.0
Total	3.9	0.7
Other long-term liabilities
Derivatives, Fair Value [Line Items]
Foreign currency forward contracts, Liability	0.0	0.0
Price Risk Derivative Liabilities, at Fair Value	1.5	0.0
Interest rate swaps, liability	56.7	30.3
Total	$ 58.2	$ 30.3