Segment Information (Operating Business Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Business Segments Information
Net Sales	$ 1,956	$ 1,834
Operating earnings	232	169
Total other income (expense)	12	3
Earnings from continuing operations before income taxes	244	172
Government [Member]
Business Segments Information
Net Sales	1,301	1,167
Operating earnings	150	99
Enterprise Mobility Solutions [Member]
Business Segments Information
Net Sales	655	667
Operating earnings	$ 82	$ 70