Earnings Per Share (Details) - $ / shares	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Reconciliation of basic net earnings per share to diluted net earnings per share
Basic net earnings per share	$ 1.56	$ 1.21	$ 4.64	$ 4.39
Average shares outstanding — basic	2,731,600,000	2,768,400,000	2,744,900,000	2,774,800,000
Potential shares exercisable under stock option plans	140,800,000	129,400,000	144,000,000	129,100,000
Less: shares which could be repurchased under treasury stock method	(88,400,000)	(92,800,000)	(93,700,000)	(89,000,000)
Convertible debt shares	1,400,000	2,200,000	1,400,000	2,200,000
Average shares outstanding — diluted	2,785,400,000	2,807,200,000	2,796,600,000	2,817,100,000
Diluted net earnings per share	$ 1.53	$ 1.20	$ 4.55	$ 4.33
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	20,000,000	0	20,000,000