Business Segment and Geographic Information (Details) - USD ($) $ in Millions		3 Months Ended						9 Months Ended
		Sep. 30, 2022		Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021		Sep. 30, 2022		Sep. 30, 2021
Revenue:
Revenue		$ 5,357				$ 3,860		$ 14,715		$ 11,018
Operating income (loss):
Impairments and other charges		0	[1]	$ (344)	$ (22)	(12)	[1]	(366)	[1]	(12)	[1]
Operating income		846				446		1,731		1,250
Interest expense, net of interest income		(93)				(116)		(301)		(361)
Other, net		(48)				(14)		(120)		(55)
Income (loss) from continuing operations before income taxes		705				316		1,268		834
Loss on early extinguishment of debt		0				0		42		0
Total operations
Operating income (loss):
Operating income		908				508		2,283		1,423
Completion and Production
Revenue:
Revenue		3,136				2,136		8,400		6,054
Operating income (loss):
Impairments and other charges				(131)		(42)		(136)		(42)
Completion and Production | Total operations
Operating income (loss):
Operating income		583				322		1,378		891
Drilling and Evaluation
Revenue:
Revenue		2,221				1,724		6,315		4,964
Operating income (loss):
Impairments and other charges				(178)		(9)		(195)		(9)
Drilling and Evaluation | Total operations
Operating income (loss):
Operating income		325				186		905		532
Corporate and Other [Member]
Operating income (loss):
Impairments and other charges				$ (35)		(39)		(35)		(39)
Operating income	[2]	$ (62)				$ (50)		$ (186)		$ (161)

[1] For the nine months ended September 30, 2022, the amount includes a $136 million charge attributable to Completions and Production, a $195 million charge attributable to Drilling and Evaluation, and a $35 million charge attributable to Corporate and other. For the three and nine months ended September 30, 2021, the amounts include a $42 million charge attributable to Completions and Production, a $9 million charge attributable to Drilling and Evaluation, and a $39 million net gain attributable to Corporate and other.

[2] Includes certain expenses not attributable to a business segment, such as costs related to support functions and corporate executives, and also includes amortization expense associated with intangible assets recorded as a result of acquisitions.