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U.S. Government Matters (Details) $ in Millions |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Mar. 24, 2015 USD ($) | Apr. 30, 2008 USD ($) | Jun. 30, 2015 USD ($) lawsuits | Dec. 31, 2014 USD ($) | Sep. 30, 2014 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2013 USD ($) | Dec. 31, 2012 USD ($) | Jun. 30, 2015 USD ($) lawsuits defendent | Jun. 30, 2014 USD ($) | Jun. 30, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2009 lawsuits
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contracts Revenue |  |  | $ 1,381 |  |  | $ 1,659 |  |  | $ 2,817 | $ 3,292 |  |  |
Retainage payable |  |  | 67 | $ 88 |  |  |  |  | 67 |  |  |  |
Unapproved claims included in accounts receivables related to various government contracts where costs have exceeded the customer's funded value of task orders |  |  | 576 | 570 |  |  |  |  | 576 |  |  |  |
Amount of unapproved claims related to de-obligation of funding |  |  | 332 | 490 |  |  |  |  | 332 |  |  |  |
All Defense Contract Audit Agency Audit Issues [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contract Termination Claims, US Federal Government |  |  | 174 | 188 |  |  |  |  | 174 |  |  |  |
Government Contract Receivable |  |  | 84 | 96 |  |  |  |  | 84 |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  | 27 | 25 |  |  |  |  | 27 |  |  |  |
Total Amount Of Payments Withheld From Subcontractors As Result Of Disapproved Costs Related To Dcaa Form 1 Issued To Enterprise |  |  | 32 | 32 |  |  |  |  | 32 |  |  |  |
Private Security [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contract Termination Claims, US Federal Government |  |  | 56 |  |  |  |  |  | 56 |  |  |  |
Contracts Revenue |  |  |  |  |  |  |  |  | 11 |  |  |  |
Government Contract Receivable |  |  | 45 |  |  |  |  |  | 45 |  |  |  |
Containers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contract Termination Claims, US Federal Government |  |  | 51 |  |  |  |  |  | 51 |  |  |  |
Contracts Revenue |  |  |  |  |  |  |  |  | 25 |  |  |  |
Government Contract Receivable |  |  | 26 |  |  |  |  |  | 26 |  |  |  |
Retainage payable |  |  | 30 |  |  |  |  |  | 30 |  |  |  |
CONCAP III [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contract Termination Claims, US Federal Government |  |  | 25 |  |  |  |  |  | 25 |  |  |  |
Contracts Revenue |  |  |  |  |  |  |  |  | 15 |  |  |  |
Government Contract Receivable |  |  | 10 |  |  |  |  |  | 10 |  |  |  |
Amount Of Costs Deemed Unallowable |  |  |  |  |  |  |  |  | 15 |  |  |  |
All Other Issues [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contract Termination Claims, US Federal Government |  |  | 42 |  |  |  |  |  | 42 |  |  |  |
Contracts Revenue |  |  |  |  |  |  |  |  | 39 |  |  |  |
Government Contract Receivable |  |  | 3 |  |  |  |  |  | 3 |  |  |  |
NonForm1Issues [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contract Termination Claims, US Federal Government |  |  | 11 |  |  |  |  |  | 11 |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  | 4 |  |  |  |  |  | 4 |  |  |  |
Audits [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contract Termination Claims, US Federal Government |  |  | 44,000 |  |  |  |  |  | 44,000 |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  | 25 |  |  |  |  |  | $ 25 |  |  |  |
DisallowanceRate |  |  |  |  |  |  |  |  | 0.00% |  |  |  |
Litigation Settlement, Amount |  |  |  |  |  |  |  |  | $ (41) |  |  |  |
OpenAudits [Member] [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contract Termination Claims, US Federal Government |  |  | 3,000 |  |  |  |  |  | 3,000 |  |  |  |
NegotiationsOpen [Member] [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount |  |  |  |  |  |  |  |  | (42) |  |  |  |
First Kuwaiti Trading Company Arbitration [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Total judgment on Sodium Dichromate | $ 3 | $ 134 |  |  |  |  |  |  |  |  |  |  |
AmountOwedToSubcontractor |  |  | $ 30 |  |  |  |  |  | 30 |  |  |  |
PaymentsOnContractWork |  |  |  | $ 4 | $ 15 |  |  |  | 3 |  |  |  |
Damages awarded, value |  |  |  |  |  |  |  |  | $ 17 |  |  |  |
Burn Pit Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Pending Claims, Number | lawsuits |  |  | 50 |  |  |  |  |  | 50 |  |  |  |
Sodium Dichromate Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contract Termination Claims, US Federal Government |  |  | $ 30 |  |  |  |  |  | $ 30 |  |  |  |
Total judgment on Sodium Dichromate |  |  |  |  |  |  |  |  |  |  | $ 81 |  |
Loss Contingency, Pending Claims, Number | lawsuits |  |  | 2 |  |  |  |  |  | 2 |  |  |  | 5
Loss Contingency, Number of Plaintiffs |  |  |  |  |  |  |  |  | 170 |  |  |  |
Damages awarded, value |  |  |  |  |  |  | $ 6 | $ 10 |  |  | $ 75 | $ 75 |
qui tams [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
qui tam government joined | lawsuits |  |  | 1 |  |  |  |  |  | 1 |  |  |  |
Legal Fees |  |  |  |  |  |  |  |  | $ 12 |  |  |  |
DOJFCA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Number of Defendants | defendent |  |  |  |  |  |  |  |  | 3 |  |  |  |
Claims [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
United States Government Contract Work [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Government Contract Receivable |  |  | $ 180 |  |  |  |  |  | $ 180 |  |  |  |
Unapproved claims included in accounts receivables related to various government contracts where costs have exceeded the customer's funded value of task orders |  |  | 151 |  |  |  |  |  | 151 |  |  |  |
Amount of unapproved claims related to de-obligation of funding |  |  | $ 29 |  |  |  |  |  | $ 29 |  |  |  |

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