Segments of Business and Geographic Areas - Narrative (Details) - USD ($) $ 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
Segment of Business and Geographic Areas (Textuals) [Abstract]
Restructuring charges									$ 491	$ 509	$ 0
Asset write-downs									283	624	410
Integration costs					$ 83
Recall program								$ 139
In-process research and development					214				29	224	178
Litigation expense	$ 96	$ 55	$ 600	$ 66		$ 409	$ 134			141	1,253
Gain from divestiture									563	2,583	2,383
Positive adjustment											100
Medical Devices
Segment of Business and Geographic Areas (Textuals) [Abstract]
Restructuring charges	298	$ 109	$ 141	$ 137	590				685	590
Asset write-downs										346
Integration costs										196	754
Recall program										148	126
In-process research and development										10	31
Litigation expense									806	5	907
Gain on litigation settlement								$ 402		600
Gain from divestiture										1,300	1,899
Consumer
Segment of Business and Geographic Areas (Textuals) [Abstract]
Litigation expense											87
Gain from divestiture										229
Pharmaceutical
Segment of Business and Geographic Areas (Textuals) [Abstract]
In-process research and development									29	214	147
Litigation expense										136	259
Gain from divestiture										981
Positive adjustment									500	500
Other marketing fee											$ 220
Property, Plant and Equipment
Segment of Business and Geographic Areas (Textuals) [Abstract]
Long-Lived Assets	15,912				15,905				15,912	15,905
Other Intangible Assets
Segment of Business and Geographic Areas (Textuals) [Abstract]
Long-Lived Assets	$ 49,681				$ 47,393				$ 49,681	$ 47,393
Sales Revenue, Net
Segment of Business and Geographic Areas (Textuals) [Abstract]
Concentration risk (as a percent)										12.50%	11.00%