Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended			6 Months Ended		12 Months Ended	3 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended		6 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended			3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended		6 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended				6 Months Ended
	Jun. 30, 2014 Country Employee	Mar. 31, 2014 Segment	Jun. 30, 2013	Jun. 30, 2014 Project Country Employee	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Middle East [Member]	Jun. 30, 2013 Middle East [Member]	Jun. 30, 2014 Asia Pacific [Member]	Jun. 30, 2014 Asia Pacific [Member]	Jun. 30, 2014 Americas [Member]	Jun. 30, 2014 Americas [Member] Project	Jun. 30, 2013 Americas [Member]	Jun. 30, 2014 Middle East [Member] Project	Jun. 30, 2013 Malaysia [Member] Project	Jun. 30, 2014 EPCI projects [Member] Middle East [Member]	Jun. 30, 2014 EPCI projects [Member] Americas [Member]	Jun. 30, 2014 Project One of Three [Member]	Jun. 30, 2013 Project One [Member] Asia Pacific [Member]	Jun. 30, 2013 Project One of Two [Member] Asia Pacific [Member]	Jun. 30, 2013 Project One of Two [Member] Americas [Member]	Jun. 30, 2013 Project One of Two [Member] Americas [Member]	Jun. 30, 2013 Project One of Two [Member] Middle East [Member]	Mar. 31, 2013 Project One of Two [Member] Malaysia [Member]	Jun. 30, 2013 Project One of Two [Member] Malaysia [Member] Project	Jun. 30, 2013 Morgan City environmental reserve [Member] Project One of Two [Member] Americas [Member] Project	Jun. 30, 2014 Altamira [Member]	Jun. 30, 2014 Brazil [Member]	Jun. 30, 2014 U.S. Gulf of Mexico [Member]	Jun. 30, 2014 U.S. Gulf of Mexico [Member] Americas [Member]	Jun. 30, 2014 Saudi Arabia [Member] Project	Jun. 30, 2014 Saudi Arabia [Member] Middle East [Member]	Jun. 30, 2013 Saudi Arabia [Member] Middle East [Member] Project	Jun. 30, 2014 Saudi Arabia [Member] EPCI projects [Member] Project	Jun. 30, 2013 Saudi Arabia [Member] Project One [Member] Middle East [Member]	Jun. 30, 2013 Saudi Arabia [Member] Project One of Two [Member] Project	Jun. 30, 2014 North Ocean 102 [Member] U.S. Gulf of Mexico [Member] Americas [Member]	Jun. 30, 2014 Claims Revenue [Member] Middle East [Member]	Jun. 30, 2013 Claims Revenue [Member] Middle East [Member]	Jun. 30, 2014 Consolidated Entities [Member] Middle East [Member]	Jun. 30, 2013 Consolidated Entities [Member] Middle East [Member]	Jun. 30, 2014 Consolidated Entities [Member] Middle East [Member]	Jun. 30, 2013 Consolidated Entities [Member] Middle East [Member]	Jun. 30, 2013 Consolidated Entities [Member] Asia Pacific [Member]	Jun. 30, 2014 Unconsolidated joint ventures [Member] Middle East [Member]	Jun. 30, 2013 Unconsolidated joint ventures [Member] Middle East [Member]	Jun. 30, 2014 Unconsolidated joint ventures [Member] Middle East [Member]	Jun. 30, 2013 Unconsolidated joint ventures [Member] Middle East [Member]	Jun. 30, 2014 Backlog [Member]	Jun. 30, 2013 Backlog [Member]	Jun. 30, 2014 Active Projects [Member]	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Maximum [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of countries	20			20
Number of employees	14,000			14,000
Number of operating segments		4
Unapproved change orders	$ 297,000,000		$ 445,000,000	$ 297,000,000	$ 445,000,000																																												$ 44,000,000	$ 170,000,000
Revenue	476,083,000		647,250,000	1,079,894,000	1,454,738,000																																	6,500,000		0	11,000,000	0	11,000,000		0	0	0	0
Cost of operations	432,298,000		723,259,000	1,023,791,000	1,436,073,000																																		173,400,000	0	39,400,000	0	39,400,000		0	3,700,000	0	3,700,000
Claim amounts								46.00%					10.00%																															44.00%
Percentage of completion to recognize expected profit	70.00%			70.00%
Number of projects accounted under deferred profit recognition policy				0																											4
Loss on contracts																											169,700,000	133,000,000	33,100,000		90,600,000																				426,400,000
Project completion year							2014		2014		2015								2013	2013	2013	2013										2016
Backlog loss position, percent																																																	100.00%
Changes in project estimates							22,000,000		15,800,000	30,800,000	13,400,000	(39,300,000)		(12,700,000)							7,000,000	14,000,000				3,000,000
Reduced cost estimates									10,200,000	10,200,000
Project close-out savings									5,600,000															14,000,000
Changes in project estimated costs							29,200,000				20,000,000	20,000,000		29,100,000			55,400,000	6,600,000	62,000,000	66,000,000			43,000,000							23,300,000				35,300,000	38,000,000		22,500,000
Partial offset on estimated costs on project												4,900,000				7,200,000	33,700,000													30,000,000
Number of project												4		5	1										1	2							1	3		1
Equity method of accounting investment ownership																																																				20.00%	50.00%
Allowance for doubtful accounts	0			0		0
Contracts in progress				440,345,000		425,986,000
Advance billing on contracts				$ 204,536,000		$ 278,929,000