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
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Total service cost	$ (11.2)	$ (10.0)	$ (22.1)	$ (19.8)
Other income, net	8.3	7.0	16.1	13.9
Net periodic pension benefit (cost)	(2.9)	(3.0)	(6.0)	(5.9)
Cost of sales
Defined Benefit Plan Disclosure [Line Items]
Total service cost	(3.3)	(2.1)	(5.4)	(4.1)
Selling, general and administrative expenses
Defined Benefit Plan Disclosure [Line Items]
Total service cost	$ (7.9)	$ (7.9)	$ (16.7)	$ (15.7)