Summarized Financial Information (Detail) (USD $) In Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010		Dec. 31, 2010
Segment Reporting Information [Line Items]
Revenues	$ 849,801		$ 627,144		$ 1,749,041		$ 1,132,026
Eliminations	(217)		(5,564)		(297)		(9,372)
Total adjustments and eliminations
Operating income	83,779		98,142		184,077		171,329
Capital Expenditures	77,696	[1]	49,204	[1]	141,682	[1]	97,616	[1]
Depreciation and amortization	19,574		19,036		40,099		37,823
Assets, continuing operations	2,615,312				2,615,312				2,511,377
Total assets held for sale	91,985				91,985				87,311
Total Assets	2,707,297				2,707,297				2,598,688
Asia Pacific
Segment Reporting Information [Line Items]
Revenues	547,833		224,078		1,022,646		444,944
Operating income	58,511		30,484		97,390		75,105
Capital Expenditures	11,431		701		38,417		7,184
Depreciation and amortization	6,616		3,698		12,352		9,083
Assets, continuing operations	838,350				838,350				564,403
Atlantic
Segment Reporting Information [Line Items]
Revenues	52,552		48,328		92,446		102,594
Intersegment transfers and eliminations	217		5,234		297		9,042
Operating income	(16,607)		(23,369)		(34,244)		(26,716)
Capital Expenditures	54,148		22,338		82,900		32,681
Depreciation and amortization	3,448		4,658		7,241		9,747
Assets, continuing operations	362,076				362,076				265,607
Middle East
Segment Reporting Information [Line Items]
Revenues	249,416		354,738		633,949		584,488
Intersegment transfers and eliminations			330				330
Operating income	41,875		91,027		120,931		122,940
Capital Expenditures	5,781		22,016		13,492		51,593
Depreciation and amortization	6,566		6,503		13,929		11,404
Assets, continuing operations	854,925				854,925				1,302,398
Corporate
Segment Reporting Information [Line Items]
Capital Expenditures	6,336		4,149		6,873		6,158
Depreciation and amortization	2,944		4,177		6,577		7,589
Assets, continuing operations	$ 559,961				$ 559,961				$ 378,969

[1] Total capital expenditures excludes $6.9 million and $10.5 million in accrued capital expenditures for the six months ended June 30, 2011 and 2010, respectively.