Goodwill and Identifiable Intangible Assets (Tables)

9 Months Ended

Sep. 25, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Goodwill by Segment

The table below presents the changes in goodwill by segment for the year-to-date period ended September 25, 2015.

	Electronic Systems			Aerospace Systems			Communication Systems		NSS			Consolidated Total
	(in millions)
Balance at December 31, 2014	$	3,773		$	1,730		$	992	$	1,006		$	7,501
Business acquisitions(1)		177			—			11		—			188
Business divestitures(2)		(12	)		—			—		—			(12	)
Impairment loss		—			—			—		(491	)		(491	)
Foreign currency translation adjustments(3)		(43	)		(31	)		—		—			(74	)
Balance at September 25, 2015	$	3,895		$	1,699		$	1,003	$	515		$	7,112

⁽¹⁾  The increase in goodwill for the Electronic Systems segment was due to the L-3 CTC business acquisition. The increase in goodwill for the Communication Systems segment was due to the Miteq business acquisition.

⁽²⁾  The decrease in goodwill for the Electronic Systems segment was due to the divestitures of BSI and the Tinsley Product Line.

⁽³⁾  The decrease in goodwill presented in the Electronic Systems segment was due to the strengthening of the U.S. dollar against the Canadian dollar, the British pound, the Euro and the Australian dollar during the year-to-date period ended September 25, 2015. The decrease in goodwill presented in the Aerospace Systems segment was due to the strengthening of the U.S. dollar against the Canadian dollar during the year-to-date period ended September 25, 2015.

Identifiable Intangible Assets

The table below presents information for the Company’s identifiable intangible assets that are subject to amortization.

			September 25, 2015						December 31, 2014
	Weighted Average Amortization Period		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	(in years)		(in millions)
Customer contractual relationships		19	$	461	$	283	$	178	$	440	$	262	$	178
Technology		11		186		118		68		165		111		54
Other		18		27		17		10		27		16		11
Total		17	$	674	$	418	$	256	$	632	$	389	$	243

Amortization Expense

The table below presents amortization expense recorded by the Company for its identifiable intangible assets.

	Third Quarter Ended				Year-to-Date  Ended
	September 25, 2015		September 26, 2014		September 25, 2015		September 26, 2014
	(in millions)
Amortization Expense	$	10	$	11	$	29	$	32

Estimated Amortization Expense

Based on gross carrying amounts at September 25, 2015, the Company’s estimate of amortization expense for identifiable intangible assets for the years ending December 31, 2015 through 2019 is presented in the table below.

	Year Ending December 31,
	2015		2016		2017		2018		2019
	(in millions)
Estimated amortization expense	$	38	$	38	$	35	$	30	$	27