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Percentage-Of-Completion Contracts (Tables)
 3 Months Ended
Mar. 31, 2015
Contractors [Abstract]  
Schedule Of Unapproved Claims And Change Orders
The amounts of unapproved change orders and claims included in determining the profit or loss on contracts are as follows:
Dollars in millions
2015
 
2014
Amounts included in project estimates-at-completion at January 1,
$
31

 
$
115

Changes in estimates-at-completion
11

 
(20
)
Approved
(3
)
 
(30
)
Amounts included in project estimates-at-completion at March 31,
$
39

 
$
65

 
 
 
 
Amounts recorded in revenues on a percentage-of-completion basis at March 31,
$
37

 
$
50