Information by Segment and Geographic Region (Operating Business Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Business Segments Information Abstract
Net Sales	$ 2,504	$ 2,112	$ 2,107	$ 1,973	$ 2,441	$ 2,153	$ 2,148	$ 1,956	$ 8,696	$ 8,698	$ 8,203
Operating earnings	413	320	266	216	423	324	278	232	1,215	1,256	858
Total other expense									(70)	(41)	(120)
Earnings from continuing operations before income taxes									1,145	1,215	738
Government
Business Segments Information Abstract
Net Sales									6,030	5,989	5,358
Operating earnings									979	965	616
Enterprise
Business Segments Information Abstract
Net Sales									2,666	2,709	2,845
Operating earnings									$ 236	$ 291	$ 242