- Reconciliation of Basic Net Earnings per Share to Diluted Net Earnings per Share (Details) - $ / shares shares in Millions	3 Months Ended								12 Months Ended
	Jan. 01, 2017	Oct. 02, 2016	Jul. 03, 2016	Apr. 03, 2016	Jan. 03, 2016	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Reconciliation of basic net earnings per share to diluted net earnings per share
Basic net earnings per share	$ 1.41	$ 1.56	$ 1.46	$ 1.62	$ 1.16	$ 1.21	$ 1.63	$ 1.55	$ 6.04	$ 5.56	$ 5.80
Average shares outstanding — basic									2,737.3	2,771.8	2,815.2
Potential shares exercisable under stock option plans									142.4	141.5	142.6
Less: shares repurchased under treasury stock method									(92.1)	(102.6)	(96.5)
Convertible debt shares									1.3	2.2	2.6
Average shares outstanding - diluted									2,788.9	2,812.9	2,863.9
Diluted net earnings per share	$ 1.38	$ 1.53	$ 1.43	$ 1.59	$ 1.15	$ 1.20	$ 1.61	$ 1.53	$ 5.93	$ 5.48	$ 5.70