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]
Total service cost	$ (9.9)	$ (9.8)	$ (29.5)	$ (31.9)
Other income, net	4.4	9.1	15.9	25.2
Net periodic benefit (cost)	(5.5)	(0.7)	(13.6)	(6.7)
Cost of sales
Defined Benefit Plan Disclosure [Line Items]
Total service cost	(2.0)	(1.6)	(6.2)	(7.0)
Selling, general and administrative expenses
Defined Benefit Plan Disclosure [Line Items]
Total service cost	$ (7.9)	$ (8.2)	$ (23.3)	$ (24.9)