Unaudited Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jul. 01, 2011	Jun. 25, 2010	Jul. 01, 2011	Jun. 25, 2010
Net sales:
Products	$ 1,886	$ 1,921	$ 3,617	$ 3,635
Services	1,880	2,045	3,750	3,955
Total net sales	3,766	3,966	7,367	7,590
Cost of sales:
Products	1,668	1,674	3,180	3,162
Services	1,694	1,850	3,393	3,576
Total cost of sales	3,362	3,524	6,573	6,738
Operating income	404	442	794	852
Interest and other income, net	5	8	7	12
Interest expense	56	72	119	136
Debt retirement charge		13	18	13
Income before income taxes	353	365	664	715
Provision for income taxes	107	134	211	262
Net income	246	231	453	453
Less: Net income attributable to noncontrolling interests	3	3	6	4
Net income attributable to L-3	243	228	447	449
Less: Net income allocable to participating securities	1	1	2	3
Net income allocable to L-3 Holdings' common shareholders	$ 242	$ 227	$ 445	$ 446
Earnings per share allocable to L-3 Holdings' common shareholders:
Basic	$ 2.28	$ 1.97	$ 4.15	$ 3.85
Diluted	$ 2.26	$ 1.95	$ 4.11	$ 3.82
Cash dividends paid per common share	$ 0.45	$ 0.40	$ 0.90	$ 0.80
L-3 Holdings' weighted average common shares outstanding:
Basic	106.1	115.4	107.3	115.7
Diluted	107.2	116.5	108.4	116.7