Business Segment and Geographic Information (Details) - USD ($) $ in Millions		3 Months Ended					6 Months Ended
		Jun. 30, 2022		Mar. 31, 2022	Jun. 30, 2021		Jun. 30, 2022		Jun. 30, 2021
Revenue:
Revenue		$ 5,074			$ 3,707		$ 9,358		$ 7,158
Operating income (loss):
Impairments and other charges		(344)	[1]	$ (22)	0	[1]	(366)	[1]	0	[1]
Operating income		374			434		885		804
Interest expense, net of interest income		(101)			(120)		(208)		(245)
Other, net		(42)			(19)		(72)		(41)
Income (loss) from continuing operations before income taxes		231			295		563		518
Loss on early extinguishment of debt		0			0		42		0	[2]
Total operations
Operating income (loss):
Operating income		785			492		1,375		915
Completion and Production
Revenue:
Revenue		2,911			2,048		5,264		3,918
Operating income (loss):
Impairments and other charges		(131)					(136)
Completion and Production | Total operations
Operating income (loss):
Operating income		499			317		795		569
Drilling and Evaluation
Revenue:
Revenue		2,163			1,659		4,094		3,240
Operating income (loss):
Impairments and other charges		(178)					(195)
Drilling and Evaluation | Total operations
Operating income (loss):
Operating income		286			175		580		346
Corporate and Other [Member]
Operating income (loss):
Impairments and other charges		35					(35)
Operating income	[3]	$ (67)			$ (58)		$ (124)		$ (111)

[1] For the three and six months ended June 30, 2022 respectively, the amounts include $131 million and $136 million charges attributable to Completions and Production, and $178 million and $195 million charges attributable to Drilling and Evaluation, and a $35 million charge attributable to Corporate and other for both periods.

[2] For the six months ended June 30, 2022, amount consists of a $42 million loss on the early redemption of senior notes.

[3] 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.