Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Net sales:
Products	$ 1,696	$ 1,915	$ 5,319	$ 5,452
Services	1,300	1,368	4,054	4,134
Total net sales	2,996	3,283	9,373	9,586
Cost of sales:
Products	(1,486)	(1,717)	(4,729)	(4,837)
Services	(1,196)	(1,235)	(3,710)	(3,762)
Total cost of sales	(2,682)	(2,952)	(8,439)	(8,599)
Operating income	314	331	934	987
Interest expense	(44)	(48)	(131)	(138)
Interest and other income, net	3		11	6
Debt retirement charge		(8)		(8)
Income from continuing operations before income taxes	273	275	814	847
Provision for income taxes	(65)	(80)	(226)	(274)
Income from continuing operations	208	195	588	573
Income (Loss) from discontinued operations, net of income taxes		(1)		32
Net income	208	194	588	605
Net income attributable to noncontrolling interests	(4)	(2)	(6)	(7)
Net income attributable to L-3	$ 204	$ 192	$ 582	$ 598
Basic earnings (loss) per share attributable to L-3 Holdings' common shareholders:
Continuing operations	$ 2.28	$ 2.01	$ 6.47	$ 5.85
Discontinued operations		$ (0.01)		$ 0.29
Basic earnings per share	$ 2.28	$ 2.00	$ 6.47	$ 6.14
Diluted earnings (loss) per share attributable to L-3 Holdings' common shareholders:
Continuing operations	$ 2.23	$ 1.98	$ 6.37	$ 5.78
Discontinued operations		$ (0.01)		$ 0.28
Diluted earnings per share	$ 2.23	$ 1.97	$ 6.37	$ 6.06
Cash dividends paid per common share	$ 0.55	$ 0.50	$ 1.65	$ 1.50
L-3 Holdings' weighted average common shares outstanding:
Basic	89.6	96.1	89.9	97.4
Diluted	91.3	97.4	91.3	98.7