Net Earnings Per Share Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Net earnings	$ 295.0	$ 240.1	$ 556.2	$ 439.8
Mandatory convertible preferred stock cumulative dividends	(0.2)	0.0	(0.2)	0.0
Net earnings attributable to common stockholders	$ 294.8	$ 240.1	$ 556.0	$ 439.8
Weighted average common shares outstanding used in basic earnings per share	349.2	347.2	348.9	347.1
Assumed exercise of dilutive options and vesting of dilutive Stock Awards	5.6	5.0	5.7	4.7
Assumed conversion of outstanding mandatory convertible preferred stock	0.2	0.0	0.1	0.0
Weighted average common shares outstanding used in diluted earnings per share	355.0	352.2	354.7	351.8
Net earnings per common share, Basic	$ 0.84	$ 0.69	$ 1.59	$ 1.27
Net earnings per share - Diluted	$ 0.83	$ 0.68	$ 1.57	$ 1.25