Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2020

Revenue Recognition

Summary of revenue is disaggregation by geographical region

	Year Ended
	December 31, 2020
		U.S. Drilling		Canada Drilling		International Drilling		Drilling Solutions		Rig Technologies		Other		Total
	(In thousands)
Lower 48	$	548,859	$	—	$	—	$	88,919	$	54,185	$	—	$	691,963
U.S. Offshore Gulf of Mexico		126,292		—		—		9,309		—		—		135,601
Alaska		37,906		—		—		1,296		19		—		39,221
Canada		—		54,753		—		1,137		3,571		—		59,461
Middle East & Asia		—		—		728,983		40,255		58,263		—		827,501
Latin America		—		—		228,930		6,578		177		—		235,685
Europe, Africa & CIS		—		—		173,760		2,340		15,340		—		191,440
Eliminations & other		—		—		—		—		—		(46,829)		(46,829)
Total	$	713,057	$	54,753	$	1,131,673	$	149,834	$	131,555	$	(46,829)	$	2,134,043

	Year Ended
	December 31, 2019
		U.S. Drilling		Canada Drilling		International Drilling		Drilling Solutions		Rig Technologies		Other		Total
	(In thousands)
Lower 48	$	1,021,879	$	—	$	—	$	170,639	$	172,559	$	—	$	1,365,077
U.S. Offshore Gulf of Mexico		156,931		—		—		13,331		—		—		170,262
Alaska		62,126		—		—		4,787		986		—		67,899
Canada		—		68,274		—		1,749		8,852		—		78,875
Middle East & Asia		—		—		765,493		43,941		56,455		—		865,889
Latin America		—		—		355,189		15,558		2,318		—		373,065
Europe, Africa & CIS		—		—		203,460		2,785		19,056		—		225,301
Eliminations & other		—		—		—		—		—		(102,985)		(102,985)
Total	$	1,240,936	$	68,274	$	1,324,142	$	252,790	$	260,226	$	(102,985)	$	3,043,383

	Year Ended
	December 31, 2018
		U.S. Drilling		Canada Drilling		International Drilling		Drilling Solutions		Rig Technologies		Other		Total
	(In thousands)
Lower 48	$	910,819	$	—	$	—	$	173,219	$	188,550	$	—	$	1,272,588
U.S. Offshore Gulf of Mexico		122,946		—		—		13,776		—		—		136,722
Alaska		49,462		—		—		3,670		777		—		53,909
Canada		—		105,000		—		5,849		29,682		—		140,531
Middle East & Asia		—		—		888,500		35,486		26,236		—		950,222
Latin America		—		—		360,385		15,350		8,514		—		384,249
Europe, Africa & CIS		—		—		220,153		2,892		17,229		—		240,274
Eliminations & other		—		—		—		—		—		(120,876)		(120,876)
Total	$	1,083,227	$	105,000	$	1,469,038	$	250,242	$	270,988	$	(120,876)	$	3,057,619

Summary of contract assets, current and long-term contract liabilities

			Contract		Contract		Contract		Contract
	Contract		Assets		Assets		Liabilities		Liabilities
	Receivables		(Current)		(Long-term)		(Current)		(Long-term)
	(In millions)
As of December 31, 2019	$	507.0	$	48.6	$	24.9	$	66.8	$	70.5
As of December 31, 2020	$	427.2	$	23.5	$	6.8	$	42.8	$	44.2