Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue:
Revenue		$ 22,408	$ 23,995	$ 20,620
Operating costs and expenses:
Impairments and other charges	[1]	2,506	265	647
General and administrative		227	254	256
Total operating costs and expenses		22,856	21,528	19,246
Operating income (loss)		(448)	2,467	1,374
Interest expense, net of interest income		(569)	(554)	(593)
Other, net		(105)	(99)	(99)
Income (loss) from continuing operations before income taxes		(1,122)	1,814	682
Income tax benefit (provision)		(7)	(157)	(1,131)
Income (loss) from continuing operations		(1,129)	1,657	(449)
Loss from discontinued operations, net		0	0	(19)
Net income (loss)		(1,129)	1,657	(468)
Net (income) loss attributable to noncontrolling interest		(2)	(1)	5
Net income (loss) attributable to company		(1,131)	1,656	(463)
Amounts attributable to company shareholders:
Income (loss) from continuing operations		(1,131)	1,656	(444)
Loss from discontinued operations, net		0	0	(19)
Net income (loss) attributable to company		$ (1,131)	$ 1,656	$ (463)
Basic and diluted income (loss) per share attributable to company shareholders:
Income (loss) from continuing operations (in dollars per share)		$ (1.29)	$ 1.89	$ (0.51)
Loss from discontinued operations, net (in dollars per share)		0	0	(0.02)
Net income (loss) per share (in dollars per share)		$ (1.29)	$ 1.89	$ (0.53)
Basic weighted average common shares outstanding		875	875	870
Diluted weighted average common shares outstanding		875	877	870
Services [Member]
Revenue:
Revenue		$ 16,884	$ 18,444	$ 15,408
Operating costs and expenses:
Cost of services and sales		15,684	16,591	14,205
Product sales [Member]
Revenue:
Revenue		5,524	5,551	5,212
Operating costs and expenses:
Cost of services and sales		$ 4,439	$ 4,418	$ 4,138

[1] Impairments and other charges are as follows: -For the year ended December 31, 2019, amount includes approximately $1.6 billion attributable to Completion and Production, $849 million attributable to Drilling and Evaluation, and $56 million attributable to Corporate and other. -For the years ended December 31, 2018 and December 31, 2017, we recorded aggregate charges of $265 million and $647 million, respectively, to write-down our investment in Venezuela.