Segments of Business and Geographic Areas (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Sales by geographic area
Total	$ 18,115	$ 17,505
Percentage Change In Sales By Geographic Area	3.50%
UNITED STATES
Sales by geographic area
Total	8,204	8,025
Percentage Change In Sales By Geographic Area	2.20%
Europe
Sales by geographic area
Total	4,885	4,481
Percentage Change In Sales By Geographic Area	9.00%
Western Hemisphere, excluding U.S.
Sales by geographic area
Total	1,695	1,783
Percentage Change In Sales By Geographic Area	(4.90%)
Asia-Pacific, Africa
Sales by geographic area
Total	$ 3,331	$ 3,216
Percentage Change In Sales By Geographic Area	3.60%