Business Segment and Geographic Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020		Mar. 31, 2019
Revenue:
Revenue		$ 5,037		$ 5,737
Operating income (loss):
Impairments and other charges	[1]	(1,073)		(61)
Operating income		(571)		365
Interest expense, net of interest income		(134)		(143)
Other, net		(23)		(30)
Income (loss) from continuing operations before income taxes		(896)		192
Loss on early extinguishment of debt		(168)	[2]	0
Long-term Debt, Excluding Current Maturities		1,500
Completion and Production
Revenue:
Revenue		2,962		3,662
Operating income (loss):
Impairments and other charges		(780)
Operating income		345		368
Drilling and Evaluation
Revenue:
Revenue		2,075		2,075
Operating income (loss):
Impairments and other charges		(277)
Operating income		217		123
Total operations
Revenue:
Revenue		5,037		5,737
Operating income (loss):
Operating income		562		491
Corporate and other
Operating income (loss):
Operating income	[3]	$ (60)		$ (65)

[1] For the three months ended March 31, 2020, amount includes approximately $780 million attributable to Completion and Production, $277 million attributable to Drilling and Evaluation, and $16 million attributable to Corporate and other. See Note 2 for further discussion on these impairments and other charges.

[2] During the three months ended March 31, 2020, we recognized a $168 million loss on extinguishment of debt related to the early repurchase of $1.5 billion aggregate principal amount of senior notes. See Note 6 for further discussion on this charge.

[3] Includes certain expenses not attributable to a particular 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.