Segment Information (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Summary Of Financial Information For Each Of Our Segments

Identifiable assets for each of our segments follows:

	September 30, 2018		December 31, 2017
Aerospace	$	11,444	$	10,126
Combat Systems	10,584		9,846
Information Technology	14,674		3,021
Mission Systems	6,093		5,856
Marine Systems	2,945		2,906
Corporate*	1,223		3,291
Total	$	46,963	$	35,046

* Corporate identifiable assets are primarily cash and equivalents.

Summary financial information for each of our segments follows:

	Revenue				Operating Earnings					Revenue from U.S. Government
Three Months Ended	September 30, 2018		October 1, 2017		September 30, 2018			October 1, 2017		September 30, 2018		October 1, 2017
Aerospace	$	2,031	$	1,995	$	376		$	381	$	48	$	48
Combat Systems	1,523		1,500		241			247		765		754
Information     Technology	2,307		1,068		157			101		2,245		1,011
Mission Systems	1,230		1,086		179			152		994		892
Marine Systems	2,003		1,931		169			179		1,932		1,921
Corporate	—		—		13			3		—		—
Total	$	9,094	$	7,580	$	1,135		$	1,063	$	5,984	$	4,626
Nine Months Ended
Aerospace	$	5,751	$	6,147	$	1,108		$	1,241	$	213	$	138
Combat Systems	4,497		4,201		701			677		2,188		2,217
Information     Technology	5,887		3,178		414			278		5,693		2,985
Mission Systems	3,475		3,226		478			451		2,769		2,591
Marine Systems	6,205		5,944		548			518		5,983		5,872
Corporate	—		—		(18		)	11		—		—
Total	$	25,815	$	22,696	$	3,231		$	3,176	$	16,846	$	13,803

The following is additional summary financial information for each of our segments:

	Capital Expenditures				Depreciation and Amortization
Nine Months Ended	September 30, 2018		October 1, 2017		September 30, 2018		October 1, 2017
Aerospace	$	142	$	87	$	112	$	112
Combat Systems	47		49		64		63
Information Technology	36		9		229		23
Mission Systems	39		34		49		43
Marine Systems	147		71		83		79
Corporate	36		23		5		6
Total	$	447	$	273	$	542	$	326