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Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts and Billings in Excess of Costs and Estimated Earnings on Uncompleted Contracts BIE (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Billings in Excess of Cost	$ 537	$ 509
Operating Segments [Member]
Billings in Excess of Cost	466	448
Operating Segments [Member] | Technology and Consulting [Member]
Billings in Excess of Cost	52	72
Operating Segments [Member] | Engineering and Construction [Member]
Billings in Excess of Cost	347	307
Operating Segments [Member] | Government Services [Member]
Billings in Excess of Cost	67	69
Operating Segments [Member] | Non-strategic Business [Member]
Billings in Excess of Cost	$ 71	$ 61

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- Definition

Liability attributable to (i) billings in excess of costs under the percentage of completion contract accounting method representing the difference between contractually invoiced amounts (billings) and revenue recognized based, for example, on costs incurred to estimated total costs at period end or (ii) contractually invoiced amounts (billings) in excess of costs incurred and accumulated under the completed contract accounting method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 35
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57807-111642

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 35
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57788-111642

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 35
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57795-111642

+ Details

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