Debt (Schedule of Borrowings) (Details) - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019	Sep. 28, 2019
Debt Instrument [Line Items]
Borrowings under revolving credit agreements	$ 0.0	$ 360.0	$ 493.3
Debt Issuance Costs, Noncurrent, Net	(8.4)	(4.1)	(4.3)
Total debt	876.6	798.4	934.0
Term Loan A [Member] \| December Sixth Two Thousand Twenty Three [Domain]
Debt Instrument [Line Items]
Long-term debt	185.0	192.5	195.0
Term Loan A [Member] \| May Fourth Two Thousand Twenty One [Domain]
Debt Instrument [Line Items]
Long-term debt	150.0	0.0	0.0
Senior Notes [Member] \| September First Two Thousand Twenty Six [Member]
Debt Instrument [Line Items]
Long-term debt	250.0	250.0	250.0
Senior Notes [Member] \| May Fifteenth Two Thousand Twenty Five [Domain]
Debt Instrument [Line Items]
Long-term debt	$ 300.0	$ 0.0	$ 0.0

Amount of short-term and long-term debt and lease obligation.

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