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- Definition

Cash Performance Award Units Performance Period

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- Definition

Expense For Cash Performance Awards

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- Definition

Number Of Cash Performance Based Award Units Forfeited

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- Definition

Number Of Cash Performance Based Award Units Granted

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- Definition

Number Of Cash Performance Based Award Units Outstanding

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- Definition

Percentage Of Average Total Shareholder Return

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- Definition

Percentage Of Job Income Sold

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- Definition

The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

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No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- 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.

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
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-Topic 505
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-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

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- Definition

The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

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Share-based Compensation And Incentive Plans (Narrative) (Details) - USD ($)	1 Months Ended	12 Months Ended
	May. 31, 2012	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense		$ 7,000,000	$ 8,000,000	$ 6,000,000
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	2,000,000
Common stock reserved for issuance	12,000,000	2,300,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of discount on stock price		5.00%
ESPP stock issued (shares)		204,000	159,000
Maximum withhold percentage		10.00%
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant-date fair value per share		$ 4.91	$ 9.57
Total intrinsic values of options exercised		$ 300,000	$ 3,000,000	7,000,000
Weighted average recognizing period of unrecognized compensation cost (in years)		1 year 9 months
Stock option compensation expense		$ 5,000,000	6,000,000	9,000,000
Unrecognized compensation cost, net of estimated forfeitures		5,000,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense		$ 2,000,000	$ 2,000,000	$ 3,000,000
KBR Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant-date fair value per share		$ 16.66	$ 28.46	$ 30.64
Weighted average recognizing period of unrecognized compensation cost (in years)		1 year 9 months 26 days
Unrecognized compensation cost, net of estimated forfeitures		$ 18,000,000
Restricted stock compensation expense		13,000,000	$ 16,000,000	$ 7,000,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense		5,000,000	6,000,000	3,000,000
Weighted-Average Fair Value On Vesting Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of shares vested based on the weighted-average fair value		9,000,000	6,000,000	8,000,000
Weighted-Average Fair Value On Grant Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of shares vested based on the weighted-average fair value		$ 14,000,000	$ 11,000,000	$ 7,000,000
Cash Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of average total shareholder return		50.00%	100.00%	100.00%
Percentage of job income sold		50.00%
Expense for cash performance awards		$ 3,000,000	$ 0	$ 8,000,000
Liability for awards		5,000,000	$ 1,000,000
Liability for awards due within one year		$ 0
Restricted Stock Units (RSUs) [Member] \| Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	2,000,000
Common stock reserved for issuance	5,500,000	700,000
Cash Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, granted		22,000,000	27,000,000	30,000,000
Cash performance award units period, years		3 years	3 years	3 years
Number of cash performance based award units forfeited		15,000,000	17,000,000	10,000,000
Outstanding awards balance		70,800,000