Segment Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) segment	Sep. 30, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			3
Revenue	$ 1,313	$ 1,120	$ 3,773	$ 3,122
Total Revenue	1,313	1,120	3,773	3,122
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	164	63	357	41
Depreciation, Depletion and Amortization	(83)	(88)	(244)	(265)
Share-based Payment Arrangement, Expense	(9)	(5)	(26)	(18)
Other Charges (Credits)	5	0	9	(25)
Operating Income (Loss)	218	121	604	243
Operating Segments | Drilling and Evaluation
Segment Reporting Information [Line Items]
Revenue	388	348	1,154	957
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	111	85	325	213
Operating Segments | Well Construction And Completion
Segment Reporting Information [Line Items]
Revenue	459	391	1,320	1,118
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	119	78	324	212
Operating Segments | Production And Intervention
Segment Reporting Information [Line Items]
Revenue	371	357	1,086	988
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	86	66	235	173
All Other
Segment Reporting Information [Line Items]
Revenue	95	24	213	59
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	7	3	25	5
Corporate
Segment Reporting Information [Line Items]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ (18)	$ (18)	$ (44)	$ (52)