Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Revenue	$ 1,120	$ 945	$ 3,122	$ 2,680
Total Revenues	1,120	945	3,122	2,680
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	63	(61)	41	(206)
Depreciation, Depletion and Amortization	(88)	(112)	(265)	(337)
Share-based Payment Arrangement, Expense	(5)	(4)	(18)	(13)
Other Cost and Expense, Operating	0	8	(25)	16
Operating Income (Loss)	121	71	243	83
Restructuring Charges	(2)	0	(22)	0
Operating Segments
Segment Reporting Information [Line Items]
Revenue	1,096	915	3,063	2,613
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	229	192	598	459
Operating Segments | Drilling and Evaluation [Member]
Segment Reporting Information [Line Items]
Revenue	348	278	957	779
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	85	56	213	131
Operating Segments | Well Construction And Completion
Segment Reporting Information [Line Items]
Revenue	391	345	1,118	1,005
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	78	79	212	184
Operating Segments | Production And Intervention
Segment Reporting Information [Line Items]
Revenue	357	292	988	829
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	66	57	173	144
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Revenue	24	30	59	67
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ (15)	$ (13)	$ (47)	$ (42)