Net Earnings Per Share Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017
Earnings Per Share [Abstract]
Net earnings	$ 245.3	$ 267.8	$ 801.5	$ 707.6
Mandatory convertible preferred stock cumulative dividends	(17.4)	0.0	(17.6)	0.0
Net earnings attributable to common stockholders	$ 227.9	$ 267.8	$ 783.9	$ 707.6
Weighted average common shares outstanding used in basic earnings per share (in shares)	349.9	347.7	349.2	347.3
Incremental common shares from:
Assumed exercise of dilutive options and vesting of dilutive Stock Awards (in shares)	5.4	5.2	5.6	4.9
Weighted average common shares outstanding used in diluted earnings per share (in shares)	355.3	352.9	354.8	352.2
Net earnings per common share - Basic (in dollars per share)	$ 0.65	$ 0.77	$ 2.24	$ 2.04
Net earnings per share - Diluted (in dollars per share)	$ 0.64	$ 0.76	$ 2.21	$ 2.01