Summary of Property Plant Equipment by Asset Category (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	$ 2,367,686		$ 2,115,176
Accumulated Depreciation	(889,009)		(833,385)
Net Book Value	1,478,677	[1]	1,281,791	[1]
Marine Vessels
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	1,089,121		882,921
Construction Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	576,855		546,305
Construction in Progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	408,705		395,949
Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	161,407		165,853
All other
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	$ 131,598		$ 124,148

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