Unaudited Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 24, 2010	Sep. 24, 2010	Sep. 30, 2011
Net sales:
Products	$ 1,856	$ 1,769	$ 5,404	$ 5,473
Services	1,931	2,066	6,021	5,681
Total net sales	3,787	3,835	11,425	11,154
Cost of sales:
Products	1,644	1,540	4,702	4,824
Services	1,737	1,858	5,434	5,130
Total cost of sales	3,381	3,398	10,136	9,954
Operating income	406	437	1,289	1,200
Interest and other income, net	3	3	15	10
Interest expense	57	64	200	176
Debt retirement charge		5	18	18
Income before income taxes	352	371	1,086	1,016
Provision for income taxes	114	130	392	325
Net income	238	241	694	691
Less: Net income attributable to noncontrolling interests	3	3	7	9
Net income attributable to L-3	235	238	687	682
Less: Net income allocable to participating securities		1	4	2
Net income allocable to L-3 Holdings' common shareholders	$ 235	$ 237	$ 683	$ 680
Earnings per share allocable to L-3 Holdings' common shareholders:
Basic	$ 2.27	$ 2.08	$ 5.93	$ 6.42
Diluted	$ 2.24	$ 2.07	$ 5.89	$ 6.34
Cash dividends paid per common share	$ 0.45	$ 0.40	$ 1.20	$ 1.35
L-3 Holdings' weighted average common shares outstanding:
Basic	103.5	114.0	115.1	106.0
Diluted	104.8	114.7	116.0	107.2