Segments and Geographic Area Analysis (Tables)

9 Months Ended

Sep. 30, 2011

Segments and Geographic Area Analysis [Abstract]

Revenues from contract drilling services by equipment-type

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2011		2010		2011		2010
			(In thousands)
High-Specification Floaters	$	464,512	$	305,335	$	1,277,867	$	1,029,510
Intermediate Semisubmersibles		350,409		380,438		1,086,748		1,150,233
Jack-ups		46,540		63,133		155,270		225,305
Other		50		92		145		127
Total contract drilling revenues		861,511		748,998		2,520,030		2,405,175
Revenues related to reimbursable expenses		16,666		50,726		54,032		76,833
Total revenues	$	878,177	$	799,724	$	2,574,062	$	2,482,008

Revenues by geographic area presented by attributing revenues to individual country

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2011		2010		2011		2010
			(In thousands)
United States	$	93,870	$	146,229	$	245,365	$	573,796
International:
South America		454,350		318,117		1,339,674		913,440
Australia/Asia/Middle East		121,450		181,550		344,572		482,942
Europe/Africa/Mediterranean		198,551		120,113		597,701		396,796
Mexico		9,956		33,715		46,750		115,034
Total revenues	$	878,177	$	799,724	$	2,574,062	$	2,482,008