Defined Benefit Plans (Components of Net Periodic Benefit Cost Reflected in the Consolidated Condensed Statement of Earnings) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2019	Mar. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Total service cost	$ (9.8)	$ (10.9)
Other income, net	5.2	7.8
Net periodic benefit cost	(4.6)	(3.1)
Cost of sales
Defined Benefit Plan Disclosure [Line Items]
Total service cost	(2.0)	(2.1)
Selling, general and administrative expenses
Defined Benefit Plan Disclosure [Line Items]
Total service cost	$ (7.8)	$ (8.8)