Business Segment and Geographic Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Revenue:
Revenue		$ 4,198	$ 7,050
Operating income (loss):
Operating income (loss)		(3,079)	(548)
Impairments and other charges	[1]	(2,766)	(1,208)
Interest expense, net of interest income	[2]	(165)	(106)
Other, net		(47)	(224)
Income (loss) from continuing operations before income taxes		(3,291)	(878)
Interest Expense, Debt		71
Senior Notes, Noncurrent		7,500
Completion and Production
Revenue:
Revenue		2,324	4,246
Operating income (loss):
Operating income (loss)		30	462
Impairments and other charges		(1,800)	(510)
Drilling and Evaluation
Revenue:
Revenue		1,874	2,804
Operating income (loss):
Operating income (loss)		241	306
Impairments and other charges		(1,000)	(638)
Total operations
Revenue:
Revenue		4,198	7,050
Operating income (loss):
Operating income (loss)		271	768
Corporate and other
Operating income (loss):
Operating income (loss)	[3]	(584)	(108)
Impairments and other charges		$ (5)	$ (60)

[1] (b) Includes $1.8 billion attributable to Completion and Production, $1.0 billion attributable to Drilling and Evaluation, and $5 million attributable to Corporate and other for the three months ended March 31, 2016. Includes $510 million attributable to Completion and Production, $638 million attributable to Drilling and Evaluation, and $60 million attributable to Corporate and other for the three months ended March 31, 2015.

[2] (c) Includes $71 million of interest expense associated with the $7.5 billion debt issued in late 2015.

[3] (a) Includes certain expenses not attributable to a particular business segment such as costs related to support functions and corporate executives, as well as Baker Hughes acquisition-related costs incurred during the three months ended March 31, 2016.