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Adoption of ASC Topic 606, Revenue From Contracts With Customers, Effective January 1, 2017 (Tables)
12 Months Ended
Dec. 31, 2016
Accounting Changes and Error Corrections [Abstract]  
Assessment of Operating Results under ASC Topic 606
Summary financial information for each of our business groups follows:
 
Revenue Recognition Accounting Change as of January 1, 2017
 
Restated Revenue
Restated Operating Earnings
Year Ended December 31
2016
2015
2016
2015
Aerospace
$
7,815

$
9,177

$
1,407

$
1,807

Combat Systems
5,530

5,643

831

886

Information Systems and Technology
9,144

8,929

941

895

Marine Systems
8,072

8,032

595

748

Corporate*


(40
)
(41
)
Total
$
30,561

$
31,781

$
3,734

$
4,295

* Corporate operating results consist primarily of stock option expense.