Business Segment and Geographic Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Revenue:
Revenue		$ 5,737	$ 5,740
Operating income (loss):
Impairments and other charges	[1]	61	265
Operating income		365	354
Interest expense, net of interest income		(143)	(140)
Other, net		(30)	(25)
Income (loss) from continuing operations before income taxes		192	189
Impairments and other charges, net of tax		61	265
Completion and Production
Revenue:
Revenue		3,662	3,807
Operating income (loss):
Operating income		368	500
Drilling and Evaluation
Revenue:
Revenue		2,075	1,933
Operating income (loss):
Operating income		123	188
Total operations
Revenue:
Revenue		5,737	5,740
Operating income (loss):
Operating income		491	688
Corporate and other
Operating income (loss):
Operating income	[2]	$ (65)	$ (69)

[1] During the three months ended March 31, 2019, we recorded $61 million of impairments and other charges, primarily relating to an impairment of fixed assets. See Note 2 for further information. During the three months ended March 31, 2018, we recognized a pre-tax charge of $265 million related to a write-down of all of our remaining investment in Venezuela.

[2] Corporate and other includes certain expenses not attributable to a particular business segment, such as costs related to support functions and corporate executives.