Segments of Business and Geographic Areas - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016
Sales by geographic area
Sales	$ 18,839	$ 18,482	$ 36,605	$ 35,964
Percentage Change In Sales By Geographic Area	1.90%		1.80%
UNITED STATES
Sales by geographic area
Sales	$ 9,726	9,572	$ 19,104	18,893
Percentage Change In Sales By Geographic Area	1.60%		1.10%
Europe
Sales by geographic area
Sales	$ 4,232	4,090	$ 8,090	7,937
Percentage Change In Sales By Geographic Area	3.50%		1.90%
Western Hemisphere, excluding U.S.
Sales by geographic area
Sales	$ 1,499	1,542	$ 2,953	2,873
Percentage Change In Sales By Geographic Area	(2.80%)		2.80%
Asia-Pacific, Africa
Sales by geographic area
Sales	$ 3,382	3,278	$ 6,458	6,261
Percentage Change In Sales By Geographic Area	3.20%		3.10%
Medical Devices [Member]
Sales by geographic area
Sales	$ 6,726	6,409	$ 13,019	12,518
Medical Devices [Member] | UNITED STATES
Sales by geographic area
Sales	$ 3,229	$ 3,044	$ 6,321	$ 6,070