Net Earnings Per Share Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 30, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Basic EPS	$ 261.2	$ 199.7
Incremental shares from assumed exercise of dilutive options and vesting of dilutive Stock Awards	0.0	0.0
Diluted EPS	$ 261.2	$ 199.7
Basic EPS (in shares)	348.6	347.0
Incremental shares from assumed exercise of dilutive options and vesting of dilutive RSUs and PSUs (in shares)	5.8	4.5
Diluted EPS (in shares)	354.4	351.5
Basic EPS (in dollars per share)	$ 0.75	$ 0.58
Diluted EPS (in dollars per share)	$ 0.74	$ 0.57