Defined Benefit Plans (Components of Net Periodic Benefit Cost Reflected in the Consolidated Condensed Statement of Earnings) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2020	Jun. 28, 2019	Jul. 03, 2020	Jun. 28, 2019
Defined Benefit Plan Disclosure [Line Items]
Total service cost	$ (10.9)	$ (7.5)	$ (17.0)	$ (15.0)
Other (expense) income, net	5.1	5.0	10.4	10.1
Net periodic benefit (cost)	(5.8)	(2.5)	(6.6)	(4.9)
Cost of sales
Defined Benefit Plan Disclosure [Line Items]
Total service cost	(2.8)	(2.2)	(4.3)	(4.2)
Selling, general and administrative expenses
Defined Benefit Plan Disclosure [Line Items]
Total service cost	$ (8.1)	$ (5.3)	$ (12.7)	$ (10.8)