Financial Instruments and Risk Management (Derivative Notional Amounts) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 26, 2020	Dec. 28, 2019	Sep. 28, 2019
Foreign exchange contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Net Hedge Ineffectiveness Gain (Loss)	$ 1.3
Foreign exchange contracts [Member] | Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	188.3	$ 246.3	$ 237.7
Foreign exchange contracts [Member] | Non-hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	0.0	7.3	0.0
Interest rate swaps [Member] | Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	293.9	355.8	366.2
Cross currency swap [Member] | Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	$ 79.8	$ 79.8	$ 79.8