Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Services		$ 4,103	$ 6,665	$ 13,830	$ 18,332
Product sales		1,479	2,036	4,721	5,768
Total revenue		5,582	8,701	18,551	24,100
Operating costs and expenses:
Cost of services		3,791	5,291	12,706	15,207
Cost of sales		1,248	1,702	3,851	4,857
Impairments and other charges	[1]	381	0	1,895	0
Business Combination, Acquisition Related Costs		82	0	203	0
General and administrative		37	74	147	238
Total operating costs and expenses		5,539	7,067	18,802	20,302
Operating income (loss)		43	1,634	(251)	3,798
Interest expense, net of interest income		(99)	(96)	(311)	(283)
Other, net		(34)	12	(281)	(43)
Income (loss) from continuing operations before income taxes		(90)	1,550	(843)	3,472
Provision for income taxes		37	(411)	207	(939)
Income (loss) from continuing operations		(53)	1,139	(636)	2,533
Income (loss) from discontinued operations, net of income tax (provision) benefit		0	66	(5)	63
Net income (loss)		(53)	1,205	(641)	2,596
Net (income) loss attributable to noncontrolling interest		(1)	(2)	(2)	3
Net income (loss) attributable to company		(54)	1,203	(643)	2,599
Amounts attributable to company shareholders:
Income (loss) from continuing operations		(54)	1,137	(638)	2,536
Income (loss) from discontinued operations, net		0	66	(5)	63
Net income (loss) attributable to company		$ (54)	$ 1,203	$ (643)	$ 2,599
Basic income per share attributable to company shareholders:
Income (loss) from continuing operations (in dollars per share)		$ (0.06)	$ 1.34	$ (0.75)	$ 2.99
Income (loss) from discontinued operations, net (in dollars per share)		0.00	0.08	(0.01)	0.07
Net income (loss) per share (in dollars per share)		(0.06)	1.42	(0.76)	3.06
Diluted income per share attributable to company shareholders:
Income from continuing operations (in dollars per share)		(0.06)	1.33	(0.75)	2.97
Income from discontinued operations, net (in dollars per share)		0.00	0.08	(0.01)	0.08
Net income per share (in dollars per share)		(0.06)	1.41	(0.76)	3.05
Cash dividends per share (in dollars per share)		$ 0.18	$ 0.15	$ 0.54	$ 0.45
Basic weighted average common shares outstanding (in shares)		855	848	852	848
Diluted weighted average common shares outstanding (in shares)		855	854	852	853

[1] (b) Includes $228 million attributable to Completion and Production, $138 million attributable to Drilling and Evaluation, and $15 million attributable to Corporate and other for the three months ended September 30, 2015. Includes $949 million attributable to Completion and Production, $865 million attributable to Drilling and Evaluation, and $81 million attributable to Corporate and other for the nine months ended September 30, 2015.