Net Earnings Per Share Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Earnings Per Share [Abstract]
Basic EPS	$ 240.1		$ 439.8
Incremental shares from assumed exercise of dilutive options and vesting of dilutive Stock Awards	0.0		0.0
Diluted EPS	$ 240.1		$ 439.8
Basic EPS (in shares)	347.2	345.2	347.1	345.2
Incremental shares from assumed exercise of dilutive options and vesting of dilutive RSUs and PSUs (in shares)	5.0		4.7
Diluted EPS (in shares)	352.2	345.2	351.8	345.2
Basic EPS (in dollars per share)	$ 0.69	$ 0.69	$ 1.27	$ 1.22
Diluted EPS (in dollars per share)	$ 0.68	$ 0.69	$ 1.25	$ 1.22
Basic and diluted EPS		$ 238.9		$ 420.9
Basic and diluted EPS (in shares)		345.2		345.2
Basic and Diluted EPS (in dollars per share)		$ 0.69		$ 1.22