Summary of Significant Accounting Policies (Summary of Significant Accounting Policies) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2019	Dec. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset	$ 82.0	$ 0.0
Net Monetary Assets (Liabilities) in Argentine Peso	1.7
Operating Lease, Liability	83.3
Accounting Standards Update 2016-02 [Member] | Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	7.1
Accounting Standards Update 2017-12 [Member] | Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 5.0