Segment Information (Tables)

6 Months Ended

Jun. 30, 2019

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	June 30, 2019		July 1, 2018		June 30, 2019		July 1, 2018
Aerospace	$	2,136	$	1,895	$	331	$	386
Combat Systems	1,659		1,534		242		236
Information Technology	2,158		2,442		154		156
Mission Systems	1,277		1,147		162		153
Marine Systems	2,325		2,168		197		195
Corporate	—		—		4		(38		)
Total	$	9,555	$	9,186	$	1,090	$	1,088
Six Months Ended
Aerospace	$	4,376	$	3,720	$	659	$	732
Combat Systems	3,295		2,974		448		460
Information Technology	4,327		3,580		310		257
Mission Systems	2,435		2,245		310		299
Marine Systems	4,383		4,202		377		379
Corporate	—		—		—		(31		)
Total	$	18,816	$	16,721	$	2,104	$	2,096