XML 77 R41.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Business Segment Information Schedule of Changes in Estimates (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013
Change in Accounting Estimate [Line Items] |  |  |  |  |  |
Reserve for estimated losses on uncompleted contracts | $ 73 | $ 127 | $ 73 | $ 127 | $ 159 | $ 109
Changes in Estimates at Completion |  |  | 42 | 3 |  |
Initial Changes [Member] |  |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |  |
Reserve for estimated losses on uncompleted contracts | (6) | 50 | (6) | 50 |  |
Amortization of Loss Provision [Member] |  |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |  |
Reserve for estimated losses on uncompleted contracts | (80) | (32) | (80) | (32) |  |
Canadian Pipe Fabrication And Module Assembly Projects [Member] |  |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |  |
Reserve for estimated losses on uncompleted contracts | 11 |  | 11 |  | 53 |
Changes in Estimates at Completion | 18 | $ 41 | 16 | $ 82 |  |
Power Projects [Member] |  |  |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |  |  |
Reserve for estimated losses on uncompleted contracts | $ 52 |  | $ 52 |  | $ 80 |

X
- Definition Changes in Estimates at Completion + References No definition available. + Details
Name: | kbr_ChangesinEstimatesatCompletion
Namespace Prefix: | kbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ChangeInAccountingEstimateLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cumulative provision for contract losses not offset against related costs accumulated on the balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=51671739&loc=d3e57777-111642 + Details
Name: | us-gaap_ProvisionForLossOnContracts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ChangeInAccountingEstimateByTypeAxis=kbr_InitialChangesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ChangeInAccountingEstimateByTypeAxis=kbr_AmortizationofLossProvisionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=kbr_CanadianPipeFabricationAndModuleAssemblyProjectsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=kbr_PowerProjectsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |