Acquisitions and Dispositions (Tables)

6 Months Ended

Jul. 01, 2011

Acquisition and Dispositions (Tables) [Abstract]

Unaudited Pro Forma Statements of Operations Data

	Second Quarter Ended		First Half Ended
	June 25, 2010		June 25, 2010
	(in millions, except per share data)
Pro forma net sales	$	4,002	$	7,720
Pro forma net income attributable to L-3	$	234	$	462
Pro forma diluted earnings per share	$	2.00	$	3.93