Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2019

Revenue Recognition

Summary of revenue is disaggregation by geographical region

	Three Months Ended
	March 31, 2019
		U.S. Drilling		Canada Drilling		International Drilling		Drilling Solutions		Rig Technologies		Other		Total
	(In thousands)
Lower 48	$	258,871	$	—	$	—	$	44,052	$	54,735	$	—	$	357,658
U.S. Offshore Gulf of Mexico		41,481		—		—		4,244		—		—		45,725
Alaska		19,857		—		—		1,728		303		—		21,888
Canada		—		25,315		—		673		2,628		—		28,616
Middle East & Asia		—		—		187,969		10,505		10,601		—		209,075
Latin America		—		—		92,366		3,231		920		—		96,517
Europe, Africa & CIS		—		—		56,921		989		2,566		—		60,476
Eliminations & other		—		—		—		—		—		(20,315)		(20,315)
Total	$	320,209	$	25,315	$	337,256	$	65,422	$	71,753	$	(20,315)	$	799,640

	Three Months Ended
	March 31, 2018
		U.S. Drilling		Canada Drilling		International Drilling		Drilling Solutions		Rig Technologies		Other		Total
	(In thousands)
Lower 48	$	204,592	$	—	$	—	$	44,273	$	50,597	$	—	$	299,462
U.S. Offshore Gulf of Mexico		20,991		—		—		3,299		—		—		24,290
Alaska		15,419		—		—		566		136		—		16,121
Canada		—		31,887		—		2,290		3,391		—		37,568
Middle East & Asia		—		—		233,857		7,725		5,208		—		246,790
Latin America		—		—		83,883		3,984		1,658		—		89,525
Europe, Africa & CIS		—		—		51,105		511		3,679		—		55,295
Eliminations & other		—		—		—		—		—		(34,857)		(34,857)
Total	$	241,002	$	31,887	$	368,845	$	62,648	$	64,669	$	(34,857)	$	734,194

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

The opening and closing balances of our receivables, contract assets and current and long-term contract liabilities are as follows:

			Contract		Contract		Contract		Contract
	Contract		Assets		Assets		Liabilities		Liabilities
	Receivables		(Current)		(Long-term)		(Current)		(Long-term)
	(In millions)
As of December 31, 2018	$	791.2	$	55.8	$	32.3	$	116.7	$	69.7
As of March 31, 2019	$	776.5	$	48.0	$	27.7	$	95.1	$	66.7