Supplemental Financial Information (Details 2) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Accrued Liabilities
Accrued capital project/upgrade costs	$ 11,905	$ 28,947
Payroll and benefits	69,741	76,041
Deferred revenue	47,149	69,825
Rig operating expenses	92,944	81,820
Interest payable	29,617	21,219
Personal injury and other claims	8,955	11,758
Accrued drillship construction installment	0	154,427
Other	18,898	25,153
Total	$ 279,209	$ 469,190