Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue:
Services		$ 15,408	$ 11,140	$ 16,981
Product sales		5,212	4,747	6,652
Total revenue		20,620	15,887	23,633
Operating costs and expenses:
Cost of services		14,213	11,253	16,014
Cost of sales		4,142	3,770	5,099
Merger-related costs and termination fee		0	4,057	308
Impairments and other charges	[1]	647	3,357	2,177
General and administrative		256	228	200
Total operating costs and expenses		19,258	22,665	23,798
Operating income (loss)		1,362	(6,778)	(165)
Interest expense, net of interest income of $112, $59 and $16		(593)	(639)	(447)
Other, net		(87)	(208)	(324)
Income (loss) from continuing operations before income taxes		682	(7,625)	(936)
Income tax benefit (provision)		(1,131)	1,858	274
Loss from continuing operations		(449)	(5,767)	(662)
Loss from discontinued operations, net		(19)	(2)	(5)
Net loss		(468)	(5,769)	(667)
Net (income) loss attributable to noncontrolling interest		5	6	(4)
Net loss attributable to company		(463)	(5,763)	(671)
Amounts attributable to company shareholders:
Loss from continuing operations		(444)	(5,761)	(666)
Loss from discontinued operations, net		(19)	(2)	(5)
Net loss attributable to company		$ (463)	$ (5,763)	$ (671)
Basic and diluted loss per share attributable to company shareholders:
Loss from continuing operations (in dollars per share)		$ (0.51)	$ (6.69)	$ (0.78)
Loss from discontinued operations, net (in dollars per share)		(0.02)	0.00	(0.01)
Net loss per share (in dollars per share)		$ (0.53)	$ (6.69)	$ (0.79)
Basic and diluted weighted average common shares outstanding (in shares)		870	861	853

[1] Impairments and other charges are as follows:-For the year ended December 31, 2017, the aggregate charge of $647 million represents a fair market value adjustment on our existing promissory note with our primary customer in Venezuela and a full reserve against our other accounts receivable with this customer. -For the year ended December 31, 2016, includes $2.1 billion attributable to Completion and Production, $1.2 billion attributable to Drilling and Evaluation and $10 million attributable to Corporate and other. -For the year ended December 31, 2015, includes $1.1 billion attributable to Completion and Production, $1.0 billion attributable to Drilling and Evaluation and $88 million attributable to Corporate and other.