Summarized Financial Information of Segments (Detail) (USD $) In Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010		Dec. 31, 2010
Segment Reporting Information [Line Items]
Revenues	$ 879,894		$ 732,095		$ 2,628,935		$ 1,864,121
Eliminations			(9,181)		(297)		(18,553)
Total adjustments and eliminations
Operating income (Loss)	35,216		84,303		219,293		255,632
Capital expenditures	90,190	[1]	38,939	[1]	231,872	[1]	136,555	[1]
Depreciation and amortization	19,801		19,601		59,900		57,424
Assets, continuing operations	2,662,856				2,662,856				2,511,377
Total assets held for sale	96,945				96,945				87,311
Total Assets	2,759,801				2,759,801				2,598,688
Asia Pacific
Segment Reporting Information [Line Items]
Revenues	528,453		277,394		1,551,099		722,338
Operating income (Loss)	44,960		23,054		142,350		98,159
Capital expenditures	20,924		8,071		59,341		15,255
Depreciation and amortization	6,621		3,829		18,973		12,912
Assets, continuing operations	699,366				699,366				564,403
Atlantic
Segment Reporting Information [Line Items]
Revenues	74,683		32,818		167,129		135,412
Intersegment transfers and eliminations			9,181		297		18,223
Operating income (Loss)	(37,020)		(41,459)		(71,264)		(68,175)
Capital expenditures	46,649		24,009		129,549		56,690
Depreciation and amortization	3,494		4,295		10,735		14,042
Assets, continuing operations	380,249				380,249				265,607
Middle East
Segment Reporting Information [Line Items]
Revenues	276,758		421,883		910,707		1,006,371
Intersegment transfers and eliminations							330
Operating income (Loss)	27,276		102,708		148,207		225,648
Capital expenditures	17,522		3,007		31,014		54,600
Depreciation and amortization	7,600		7,361		21,529		18,765
Assets, continuing operations	967,082				967,082				1,302,398
Corporate
Segment Reporting Information [Line Items]
Capital expenditures	5,095		3,852		11,968		10,010
Depreciation and amortization	2,086		4,116		8,663		11,705
Assets, continuing operations	$ 616,159				$ 616,159				$ 378,969

[1] Total capital expenditures exclude $9.5 million and $4.9 million in accrued capital expenditures for the nine months ended September 30, 2011 and 2010, respectively.