Debt Schedule of Outstanding Borrowings and Applicable Rates (Details) - USD ($) $ in Millions	Dec. 27, 2019	Dec. 28, 2018
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 5,422.8	$ 6,156.7
Secured Debt \| Term Loan due Sept 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	4.85%
Loans Payable	$ 1,520.8	1,613.8
Secured Debt \| Term Loan due 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	4.91%
Loans Payable	$ 403.6	597.0
Debentures \| 2017 Revolving Credit Facility
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	4.23%
Debt, Long-term and Short-term, Combined Amount	$ 900.0	$ 220.0

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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