Segments of Business and Geographic Areas (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Sales by geographic area
Total	$ 18,467	$ 17,575	$ 56,077	$ 52,957
Percentage Change In Sales By Geographic Area	5.10%		5.90%
UNITED STATES
Sales by geographic area
Total	8,842	7,925	26,178	23,896
Percentage Change In Sales By Geographic Area	11.60%		9.50%
Europe
Sales by geographic area
Total	4,446	4,478	14,387	13,631
Percentage Change In Sales By Geographic Area	(0.70%)		5.50%
Western Hemisphere, excluding U.S.
Sales by geographic area
Total	1,820	1,842	5,378	5,530
Percentage Change In Sales By Geographic Area	(1.20%)		(2.70%)
Asia-Pacific, Africa
Sales by geographic area
Total	$ 3,359	$ 3,330	$ 10,134	$ 9,900
Percentage Change In Sales By Geographic Area	0.90%		2.40%