Business Segment and Geographic Information (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Revenue		$ 5,919	$ 8,051	$ 12,969	$ 15,399
Operating income (loss):
Operating income (loss)		254	1,194	(294)	2,164
Restructuring Charges	[1]	(306)	0	(1,514)	0
Interest expense, net of interest income		(106)	(94)	(212)	(187)
Other, net		(23)	(24)	(247)	(55)
Income (loss) from continuing operations before income taxes		125	1,076	(753)	1,922
Completion and Production
Revenue:
Revenue		3,444	4,942	7,690	9,362
Operating income (loss):
Operating income (loss)		313	887	775	1,548
Restructuring Charges		(211)		(720)
Drilling and Evaluation
Revenue:
Revenue		2,475	3,109	5,279	6,037
Operating income (loss):
Operating income (loss)		400	414	706	812
Restructuring Charges		(89)		(727)
Total operations
Revenue:
Revenue		5,919	8,051	12,969	15,399
Operating income (loss):
Operating income (loss)		713	1,301	1,481	2,360
Corporate and other
Operating income (loss):
Operating income (loss)	[2]	(153)	$ (107)	(261)	$ (196)
Restructuring Charges		$ (6)		$ (67)

[1] (b) Includes $211 million attributable to Completion and Production, $89 million attributable to Drilling and Evaluation, and $6 million attributable to Corporate and other for the three months ended June 30, 2015. Includes $720 million attributable to Completion and Production,$727 million attributable to Drilling and Evaluation, and $67 million attributable to Corporate and other for the six months ended June 30, 2015.

[2] (a) Includes certain expenses not attributable to a particular business segment such as costs related to support functions and corporate executives, as well as costs related to the pending Baker Hughes acquisition incurred during the three and six months ended June 30, 2015.