Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 27, 2015	Mar. 28, 2014
Net sales:
Products	$ 1,547	$ 1,649
Services	1,166	1,308
Total net sales	2,713	2,957
Cost of sales:
Products	(1,388)	(1,466)
Services	(1,103)	(1,205)
Total cost of sales	(2,491)	(2,671)
Loss related to business divestiture	(22)
Operating income	200	286
Interest expense	(44)	(43)
Interest and other income, net	3	5
Income before income taxes	159	248
Provision for income taxes	(50)	(76)
Net income	109	172
Net income attributable to noncontrolling interests	(4)	(2)
Net income attributable to L-3	$ 105	$ 170
Earnings per share attributable to L-3 Holdings' common shareholders:
Basic	$ 1.28	$ 1.97
Diluted	$ 1.25	$ 1.90
Cash dividends paid per common share	$ 0.65	$ 0.60
L-3 Holdings' weighted average common shares outstanding:
Basic	82.3	86.1
Diluted	83.8	89.4