Defined Benefit Plans (Components of Net Periodic Benefit Cost Reflected in the Consolidated Condensed Statement of Earnings) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2019	Sep. 28, 2018	Sep. 27, 2019	Sep. 28, 2018
Defined Benefit Plan Disclosure [Line Items]
Other income, net	$ 0.2	$ 1.5	$ 1.6	$ 1.9
Net periodic pension cost	(2.0)	(1.1)	(5.2)	(5.6)
Selling, general and administrative expenses
Defined Benefit Plan Disclosure [Line Items]
Total service cost	$ (2.2)	$ (2.6)	$ (6.8)	$ (7.5)