XML 76 R61.htm IDEA: XBRL DOCUMENT v3.3.1.900

Business Segment Information Changes in Estimates (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in Accounting Estimate [Line Items]
Provision for Loss on Contracts	$ 60,000,000	$ 159,000,000	$ 109,000,000	$ 56,000,000
Changes in estimates at completion	71,000,000	87,000,000
Initial Changes [Member]
Change in Accounting Estimate [Line Items]
Provision for Loss on Contracts	14,000,000	177,000,000	106,000,000
Amortization of Loss Provision [Member]
Change in Accounting Estimate [Line Items]
Provision for Loss on Contracts	(113,000,000)	(127,000,000)	(53,000,000)
Power Projects [Member]
Change in Accounting Estimate [Line Items]
Provision for Loss on Contracts	47,000,000	80,000,000
Changes in estimates at completion	16,000,000	80,000,000
Canadian Pipe Fabrication And Module Assembly Projects [Member]
Change in Accounting Estimate [Line Items]
Provision for Loss on Contracts	0	53,000,000
Canadian Pipe Fabrication And Module Assembly Projects [Member] | Favorable [Member]
Change in Accounting Estimate [Line Items]
Changes in estimates at completion	$ 21,000,000
Canadian Pipe Fabrication And Module Assembly Projects [Member] | Unfavorable [Member]
Change in Accounting Estimate [Line Items]
Changes in estimates at completion		$ (72,000,000)	$ (132,000,000)

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_PowerProjectsMember
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_ChangeInAccountingEstimateByTypeAxis=kbr_FavorableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ChangeInAccountingEstimateByTypeAxis=kbr_UnfavorableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: