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Acquisitions, Intangible Assets And Goodwill (Tables)
 6 Months Ended
Jun. 29, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes In The Carrying Amount Of Goodwill By Reporting Unit
The changes in the carrying amount of goodwill by reporting unit for the six months ended
June 29, 2014, were as follows:

 
Aerospace
 
Combat Systems
 
Marine Systems
 
Information Systems and Technology
 
Total Goodwill
December 31, 2013 (a)
$
2,741

 
$
2,849

 
$
289

 
$
6,053

 
$
11,932

Other (b)
(2
)
 
(5
)
 
—

 
2

 
(5
)
June 29, 2014
$
2,739

 
$
2,844

 
$
289

 
$
6,055

 
$
11,927

(a)Goodwill on December 31, 2013, in the Information Systems and Technology reporting unit is net of $1,994 of accumulated impairment losses.
(b)Consists primarily of adjustments for foreign currency translation.
Intangible assets
Intangible assets consisted of the following:
 
Gross Carrying Amount
Accumulated Amortization
Net Carrying Amount
 
Gross Carrying Amount
Accumulated Amortization
Net Carrying Amount
 
December 31, 2013
 
June 29, 2014
Contract and program intangible assets*
$
1,790

$
(1,189
)
$
601

 
$
1,629

$
(1,076
)
$
553

Trade names and trademarks
507

(103
)
404

 
505

(111
)
394

Technology and software
130

(92
)
38

 
130

(95
)
35

Other intangible assets
155

(154
)
1

 
155

(154
)
1

Total intangible assets
$
2,582

$
(1,538
)
$
1,044

 
$
2,419

$
(1,436
)
$
983

* Consists of acquired backlog and probable follow-on work and related customer relationships. The decrease in the gross carrying amount and accumulated amortization of contract and program intangible assets from December 31, 2013, to June 29, 2014, is primarily due to the write-off of fully amortized assets in the Information Systems and Technology group.