Supplemental Financial Information - Accrued Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Payables And Accruals [Abstract]
Rig operating expenses	$ 87,307	$ 70,078
Payroll and benefits	121,387	88,612
Deferred revenue	26,975	71,699
Accrued capital project/upgrade costs	86,274	56,595
Interest payable	28,324	21,219
Personal injury and other claims	9,687	10,312
FOREX contracts	1,143	29
Other	9,574	5,890
Total	$ 370,671	$ 324,434