Information about Segment Assets and Property, Plant and Equipment by Country (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Segment Reporting Information [Line Items]
Assets, continuing operations	$ 3,333,627		$ 2,934,046		$ 2,511,377
Total assets attributable to discontinued operations			58,768		87,311
Total assets	3,333,627		2,992,814		2,598,688
Net Property, Plant and Equipment	1,281,791	[1]	1,101,865	[1]
Asia Pacific
Segment Reporting Information [Line Items]
Assets, continuing operations	1,402,923		934,134		564,403
Atlantic
Segment Reporting Information [Line Items]
Assets, continuing operations	536,734		419,258		265,607
Middle East
Segment Reporting Information [Line Items]
Assets, continuing operations	1,006,284		1,065,478		1,302,398
Corporate and Other
Segment Reporting Information [Line Items]
Assets, continuing operations	387,686		515,176		378,969
Singapore
Segment Reporting Information [Line Items]
Net Property, Plant and Equipment	324,106		139,258
Australia
Segment Reporting Information [Line Items]
Net Property, Plant and Equipment	212,955		63,065
United States
Segment Reporting Information [Line Items]
Net Property, Plant and Equipment	201,815		69,552
Indonesia
Segment Reporting Information [Line Items]
Net Property, Plant and Equipment	144,322		144,274
United Arab Emirates
Segment Reporting Information [Line Items]
Net Property, Plant and Equipment	110,292		322,233
Saudi Arabia
Segment Reporting Information [Line Items]
Net Property, Plant and Equipment	102,334		131,637
Mexico
Segment Reporting Information [Line Items]
Net Property, Plant and Equipment	61,390		65,039
Brazil
Segment Reporting Information [Line Items]
Net Property, Plant and Equipment	52,955		58,780
Spain
Segment Reporting Information [Line Items]
Net Property, Plant and Equipment	15,159		89,539
Other Countries
Segment Reporting Information [Line Items]
Net Property, Plant and Equipment	$ 56,463		$ 18,488

[1] Our marine vessels are included in the country in which they were located as of year-end.