Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014
Net sales:
Products	$ 1,612	$ 1,644	$ 4,761	$ 4,991
Services	1,205	1,296	3,562	3,925
Total net sales	2,817	2,940	8,323	8,916
Cost of sales:
Products	(1,417)	(1,480)	(4,335)	(4,498)
Services	(1,114)	(1,203)	(3,316)	(3,636)
Total cost of sales	(2,531)	(2,683)	(7,651)	(8,134)
Loss related to business divestitures	(9)		(29)
Impairment charge	(491)		(491)
Operating (loss) income	(214)	257	152	782
Interest expense	(47)	(47)	(139)	(129)
Interest and other income, net	3	5	11	14
(Loss) income before income taxes	(258)	215	24	667
Provision for income taxes	(38)	(58)	(87)	(197)
Net (loss) income	(296)	157	(63)	470
Net income attributable to noncontrolling interests	(3)	(3)	(11)	(9)
Net (loss) income attributable to L-3	$ (299)	$ 154	$ (74)	$ 461
(Loss) earnings per share attributable to L-3 Holdings' common shareholders:
Basic	$ (3.74)	$ 1.81	$ (0.91)	$ 5.38
Diluted	(3.74)	1.78	(0.91)	5.21
Cash dividends paid per common share	$ 0.65	$ 0.60	$ 1.95	$ 1.80
L-3 Holdings' weighted average common shares outstanding:
Basic	80.0	85.1	81.5	85.7
Diluted	80.0	86.6	81.5	88.4