Increase (decrease) in estimated costs to complete projects.

No definition available.

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- Definition

Number of projects.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Details

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- Definition

The amount that will be offset against future earnings by anticipated increases or decreases in other expenses or revenues.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4)

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The gains and losses included in earning resulting from the sale of a project.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Use of Estimates - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Project	Mar. 31, 2014 Project
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Increase (decrease) in project estimated costs	$ 21.6
AEA [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Changes in project estimates	6.6
MEA [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Changes in project estimates	9.1
ASA [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Changes in project estimates	5.9
Brazil [Member] \| AEA [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Increase (decrease) in project estimated costs	(4.4)
SAUDI ARABIA \| MEA [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Changes in project estimates		31.9
Number of project	2	3
Partial offset on estimated costs on project	4.5
SAUDI ARABIA \| MEA [Member] \| Project One [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Changes in project estimates	6.9
SAUDI ARABIA \| MEA [Member] \| Project Two [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Increase (decrease) in project estimated costs		24.3
Changes in project estimates	6.3
SAUDI ARABIA \| MEA [Member] \| Project Three
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Increase (decrease) in project estimated costs		7.6
Mexico [Member] \| AEA [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Changes in project estimates		35.4
Malaysia [Member] \| ASA [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Changes in project estimates		$ 20.6