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
	Oct. 02, 2020	Sep. 27, 2019	Oct. 02, 2020	Sep. 27, 2019
Defined Benefit Plan Disclosure [Line Items]
Total service cost	$ (11.0)	$ (7.7)	$ (28.0)	$ (22.7)
Other (expense) income, net	3.4	4.2	13.8	14.3
Net periodic benefit (cost)	(7.6)	(3.5)	(14.2)	(8.4)
Cost of sales
Defined Benefit Plan Disclosure [Line Items]
Total service cost	(2.9)	(2.0)	(7.2)	(6.2)
Selling, general and administrative expenses
Defined Benefit Plan Disclosure [Line Items]
Total service cost	$ (8.1)	$ (5.7)	$ (20.8)	$ (16.5)