Segments and Geographic Area Analysis - Additional Information (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Construction work-in-progress	$ 1,668,211	$ 990,964
United States [Member]
Segment Reporting Information [Line Items]
Construction work-in-progress	339,100	167,400	14,600
Australia Asia Middle East [Member]
Segment Reporting Information [Line Items]
Construction work-in-progress	1,064,500	741,100	490,200
Singapore [Member]
Segment Reporting Information [Line Items]
Construction work-in-progress	$ 264,600	$ 82,500