Supplemental Financial Information (Details 2) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Accrued Liabilities
Accrued capital project/upgrade costs	$ 6,848	$ 28,947
Payroll and benefits	87,522	76,041
Deferred revenue	55,933	69,825
Rig operating expenses	71,901	81,820
Interest payable	21,219	21,219
Personal injury and other claims	8,563	11,758
Accrued drillship construction installment		154,427
Other	26,911	25,153
Total	$ 278,897	$ 469,190