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Segments and Geographic Area Analysis (Tables)

12 Months Ended

Dec. 31, 2019

Summary of Information About Disaggregated Revenue by Equipment type and Country

The following tables provide information about disaggregated revenue by equipment-type and country (in thousands):

	Year Ended December 31, 2019
	Total Contract Drilling Revenues ⁽¹⁾		Revenues Related to Reimbursable Expenses		Total
United States	$	507,759	$	7,881	$	515,640
Brazil		191,519		83		191,602
United Kingdom		149,724		14,036		163,760
Australia		85,932		23,710		109,642
Total	$	934,934	$	45,710	$	980,644

⁽¹⁾	Contract drilling revenue for 2019 was entirely attributable to our floater rigs (drillships and semisubmersibles).

	Year Ended December 31, 2018
	Floater Rigs		Jack-up Rigs ⁽¹⁾		Total Contract Drilling Revenues		Revenues Related to Reimbursable Expenses			Total
United States	$	628,574	$	8,413	$	636,987	$	7,436		$	644,423
Brazil		170,839		—		170,839		(26	)		170,813
United Kingdom		84,749		—		84,749		7,738			92,487
Australia		53,170		—		53,170		7,612			60,782
Malaysia		114,228		—		114,228		(210	)		114,018
Other countries ⁽²⁾		—		—		—		692			692
Total	$	1,051,560	$	8,413	$	1,059,973	$	23,242		$	1,083,215

⁽¹⁾	^{Loss-of-hire insurance proceeds related to early contract terminations for two jack-up rigs.}

⁽²⁾	^{This represents countries that individually comprised less than 5% of total revenues.}

	Year Ended December 31, 2017
	Floater Rigs		Jack-up Rigs		Total Contract Drilling Revenues		Revenues Related to Reimbursable Expenses			Total
United States	$	619,655	$	—	$	619,655	$	10,940		$	630,595
Brazil		280,798		—		280,798		(311	)		280,487
United Kingdom		171,146		—		171,146		6,424			177,570
Australia		125,568		—		125,568		15,385			140,953
Malaysia		164,984		—		164,984		1,988			166,972
Trinidad		67,924		—		67,924		—			67,924
Other countries ⁽¹⁾		—		21,144		21,144		101			21,245
Total	$	1,430,075	$	21,144	$	1,451,219	$	34,527		$	1,485,746

⁽¹⁾	^{This represents countries that individually comprised less than 5% of total revenues.}

Long-Lived Tangible Assets by Country

The following table presents our long-lived tangible assets by country as of December 31, 2019, 2018 and 2017. A substantial portion of our assets is comprised of rigs that are mobile, and therefore asset locations at the end of the period are not necessarily indicative of the geographic distribution of the earnings generated by such assets during the periods and may vary from period to period due to the relocation of rigs. In circumstances where our drilling rigs were in transit at the end of a calendar year, they have been presented in the tables below within the country in which they were expected to operate (in thousands).

	December 31,
	2019		2018 ⁽¹⁾		2017 ⁽¹⁾
Drilling and other property and equipment, net:
United States	$	2,227,934	$	2,245,989	$	2,300,956
International:
United Kingdom		1,061,585		1,083,540		133,525
Brazil		883,607		923,355		923,398
Australia		570,964		242,929		629,436
Singapore		404,420		366,798		17
Malaysia		2,037		318,191		1,084,793
Other countries ⁽²⁾		2,281		3,420		189,516
		2,924,894		2,938,233		2,960,685
Total	$	5,152,828	$	5,184,222	$	5,261,641

⁽¹⁾	^{During 2018 and 2017, we recorded aggregate impairment losses of $27.2 million and $99.3 million, respectively, to write down certain of our drilling rigs and related equipment with indicators of impairment to their estimated recoverable amounts.}

⁽²⁾	^{This represents countries with long-lived assets that individually comprised less than 5% of total drilling and other property and equipment, net of accumulated depreciation.}

Revenues from Major Customers that Contributed More than 10% of Total Revenues

Revenues from our major customers for the years ended December 31, 2019, 2018 and 2017 that contributed more than 10% of our total revenues are as follows:

	Year Ended December 31,
Customer	2019			2018			2017
Hess Corporation		28.9	%		25.0	%		16.0	%
Occidental (formerly Anadarko)		20.6	%		33.8	%		24.9	%
Petróleo Brasileiro S.A.		19.5	%		15.8	%		18.9	%
BP		3.1	%		10.5	%		15.8	%