Segments and Geographic Area Analysis (Tables)

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Revenues from Contract Drilling Services by Equipment Type

Revenues from contract drilling services by equipment type are listed below.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
	(In thousands)
Floaters:
Ultra-Deepwater	$	275,859	$	217,275	$	801,859	$	757,338
Deepwater		35,634		66,011		170,482		192,319
Mid-Water		39,616		56,350		124,444		160,716
Total Floaters		351,109		339,636		1,096,785		1,110,373
Jack-ups		6,574		—		16,625		30,195
Total contract drilling revenues		357,683		339,636		1,113,410		1,140,568
Revenues related to reimbursable expenses		8,340		9,542		26,128		67,900
Total revenues	$	366,023	$	349,178	$	1,139,538	$	1,208,468

Revenues by Geographic Area Presented by Attributing Revenues to Individual Country

Revenues by geographic area are presented by attributing revenues to the individual country or areas where the services were performed.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
	(In thousands)
United States	$	171,476	$	121,895	$	481,933	$	414,087
International:
South America		58,750		105,614		272,929		333,803
Australia/Asia		80,543		56,688		219,103		169,323
Europe		48,680		63,117		148,948		253,287
Mexico		6,574		1,864		16,625		37,968
Total revenues	$	366,023	$	349,178	$	1,139,538	$	1,208,468