Segment Information (Tables)

9 Months Ended

Sep. 27, 2020

Segment Reporting [Abstract]

Summary Of Financial Information For Each Of Our Segments

Summary financial information for each of our segments follows:

	Revenue				Operating Earnings
Three Months Ended	September 27, 2020		September 29, 2019		September 27, 2020			September 29, 2019
Aerospace	$	1,975	$	2,495	$	283		$	393
Combat Systems	1,801		1,740		270			264
Information Technology	2,029		2,071		146			146
Mission Systems	1,221		1,220		168			185
Marine Systems	2,405		2,235		223			209
Corporate	—		—		(6		)	19
Total	$	9,431	$	9,761	$	1,084		$	1,216
Nine Months Ended
Aerospace	$	5,640	$	6,871	$	682		$	1,052
Combat Systems	5,263		5,035		732			712
Information Technology	5,901		6,398		379			456
Mission Systems	3,518		3,655		480			495
Marine Systems	7,122		6,618		607			586
Corporate	—		—		(14		)	19
Total	$	27,444	$	28,577	$	2,866		$	3,320