Revenues (Tables)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

The following tables disaggregate our product and service revenues from contracts with customers by major product line and geographic region for the second quarter and the first six months ended June 30, 2019 and 2018:



	Three Months Ended June 30, 2019
(Dollars in millions)	Western Hemisphere		Eastern Hemisphere		Total Revenues Excluding Rental Revenues
Product Lines:
Production	$	308	$	65	$	373
Completions	128		175		303
Drilling and Evaluation	126		173		299
Well Construction	97		153		250
Total	$	659	$	566	$	1,225



	Three Months Ended June 30, 2018
(Dollars in millions)	Western Hemisphere		Eastern Hemisphere		Total Revenues Excluding Rental Revenues
Product Lines:
Production	$	308	$	86	$	394
Completions	148		155		303
Drilling and Evaluation	141		180		321
Well Construction	87		230		317
Total	$	684	$	651	$	1,335



	Six Months Ended June 30, 2019
(Dollars in millions)	Western Hemisphere		Eastern Hemisphere		Total Revenues Excluding Rental Revenues
Product Lines:
Production	$	603	$	161	$	764
Completions	261		347		608
Drilling and Evaluation	268		357		625
Well Construction	196		300		496
Total	$	1,328	$	1,165	$	2,493



	Six Months Ended June 30, 2018
(Dollars in millions)	Western Hemisphere		Eastern Hemisphere		Total Revenues Excluding Rental Revenues
Product Lines:
Production	$	594	$	181	$	775
Completions	305		291		596
Drilling and Evaluation	297		374		671
Well Construction	188		446		634
Total	$	1,384	$	1,292	$	2,676



	Three Months Ended				Six Months Ended
	June 30,				June 30,
(Dollars in millions)	2019		2018		2019		2018
Geographic Areas:
United States	$	324	$	346	$	653	$	691
Latin America	284		270		542		496
Canada	51		68		133		197
Western Hemisphere	659		684		1,328		1,384

Middle East & North Africa	270		356		578		719
Europe/Sub-Sahara Africa/Russia	215		219		431		441
Asia	81		76		156		132
Eastern Hemisphere	566		651		1,165		1,292

Total Product and Service Revenue before Rental Revenues	1,225		1,335		2,493		2,676
Equipment Rental Revenues	84		113		162		195
Total Revenues	$	1,309	$	1,448	$	2,655	$	2,871

Schedule of Contract with Customer, Asset and Liability

Contract Balances

The following table provides information about receivables for product and services included in “Accounts Receivable, Net” at June 30, 2019 and December 31, 2018, respectively.

Changes in the contract assets and liabilities balances during the period are as follows:



(Dollars in millions)	Contract Assets			Contract Liabilities
Balance at December 31, 2018	$	4		$	64
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	—			(44		)
Increase due to consideration received, excluding amount recognized as revenue during the period	—			29
Increase due to revenue recognized during the period but contingent on future performance	12			—
Transferred to receivables from contract assets recognized at the beginning of the period	(11		)	—
Adjustments due to changes in estimates or contract modifications	—			7
Balance at June 30, 2019	$	5		$	56

Schedule of Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

In the following table, estimated revenue expected to be recognized in the future related to performance obligations that are either unsatisfied or partially unsatisfied as of June 30, 2019 primarily relate to subsea services and an artificial lift contract. All consideration from contracts with customers is included in the amounts presented in the following table.



(Dollars in millions)	2019		2020		2021		2022		Thereafter		Total
Service Revenue	$	62	$	33	$	18	$	18	$	19	$	150

(Dollars in millions)

June 30, 2019

December 31, 2018

Receivables for Product and Services in Accounts Receivable, Net