UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 24, 2016	Jun. 30, 2017	Jun. 24, 2016
Net sales:
Products	$ 1,678	$ 1,638	$ 3,278	$ 3,061
Services	1,054	1,026	2,123	1,956
Total net sales	2,732	2,664	5,401	5,017
Cost of sales:
Products	(1,439)	(1,474)	(2,865)	(2,740)
Services	(981)	(943)	(1,971)	(1,778)
Total cost of sales	(2,420)	(2,417)	(4,836)	(4,518)
Operating income	312	247	565	499
Interest expense	(43)	(43)	(85)	(84)
Interest and other income, net	4	5	9	9
Debt retirement charge	0	(5)	0	(5)
Income from continuing operations before income taxes	273	204	489	419
Provision for income taxes	(66)	(53)	(114)	(101)
Income from continuing operations			375	318
Income from discontinued operations, net of income taxes			0	63
Net income	207	151	375	381
Net income from continuing operations attributable to noncontrolling interests	(5)	(4)	(9)	(7)
Net income attributable to L3	$ 202	$ 147	$ 366	$ 374
Basic earnings per share attributable to common shareholders:
Continuing operations (in dollars per share)	$ 2.59	$ 1.90	$ 4.70	$ 4.02
Discontinued operations (in dollars per share)	0	0	0	0.81
Basic earnings per share (in dollars per share)	2.59	1.90	4.70	4.83
Diluted earnings per share attributable to common shareholders:
Continuing operations (in dollars per share)	2.54	1.88	4.61	3.95
Discontinued operations (in dollars per share)	0	0	0	0.80
Diluted earnings per share (in dollars per share)	2.54	1.88	4.61	4.75
Cash dividends declared per common share (in dollars per share)	$ 0.75	$ 0.70	$ 1.50	$ 1.40
Weighted average common shares outstanding:
Basic (in shares)	78.0	77.2	77.8	77.5
Diluted (in shares)	79.5	78.4	79.4	78.7