Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Revenue	$ 1,064	$ 903	$ 2,002	$ 1,735
Total Revenues	1,064	903	2,002	1,735
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	24	(58)	(22)	(145)
Depreciation, Depletion and Amortization	(90)	(114)	(177)	(225)
Share-based Payment Arrangement, Expense	(6)	(5)	(13)	(9)
Other Cost and Expense, Operating	14	8	(25)	8
Operating Income (Loss)	104	25	122	12
Restructuring Charges	0	0	(20)	0
UKRAINE
Segment Reporting Information [Line Items]
Other Cost and Expense, Operating			(17)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	1,045	880	1,967	1,698
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	204	147	369	267
Operating Segments | Drilling and Evaluation [Member]
Segment Reporting Information [Line Items]
Revenue	317	265	609	501
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	69	46	128	75
Operating Segments | Well Construction And Completion
Segment Reporting Information [Line Items]
Revenue	383	337	727	660
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	67	55	134	105
Operating Segments | Production And Intervention
Segment Reporting Information [Line Items]
Revenue	345	278	631	537
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	68	46	107	87
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Revenue	19	23	35	37
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ (18)	$ (11)	$ (32)	$ (29)