Supplemental Financial Information - Accrued Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Rig operating expenses	$ 40,157	$ 47,426
Payroll and benefits	44,331	59,787
Deferred revenue	14,922	31,542
Accrued capital project/upgrade costs	65,286	84,146
Interest payable	44,130	18,365
Personal injury and other claims	6,243	8,320
Other	9,321	4,183
Total	$ 224,390	$ 253,769