Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net sales:
Products	$ 6,909	$ 7,189	$ 7,586
Services	5,215	5,433	5,521
Total net sales	12,124	12,622	13,107
Cost of sales:
Products	(6,219)	(6,409)	(6,782)
Services	(4,820)	(5,001)	(5,017)
Total cost of sales	(11,039)	(11,410)	(11,799)
Operating income	1,085	1,212	1,308
Interest expense	(178)	(177)	(184)
Interest and other income, net	18	20	11
Debt Retirement Charge			(13)
Income from continuing operations before income taxes	925	1,055	1,122
Provision for income taxes	(248)	(295)	(360)
Income from continuing operations	677	760	762
Income from discontinued operations, net of income tax			32
Net income	677	760	794
Net income attributable to noncontrolling interests	(13)	(9)	(10)
Net income attributable to L-3	$ 664	$ 751	$ 784
Basic earnings per share attributable to L-3 Holdings' common shareholders:
Continuing operations	$ 7.78	$ 8.40	$ 7.85
Discontinued operations			$ 0.29
Basic earnings per share	$ 7.78	$ 8.40	$ 8.14
Diluted earnings per share attributable to L-3 Holdings' common shareholders:
Continuing operations	$ 7.56	$ 8.24	$ 7.74
Discontinued operations			$ 0.29
Diluted earnings per share	$ 7.56	$ 8.24	$ 8.03
Cash dividends declared per common share	$ 2.40	$ 2.20	$ 2.00
L-3 Holdings' weighted average common shares outstanding:
Basic	85.4	89.4	96.3
Diluted	87.8	91.1	97.6