Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Revenue:
Revenue		$ 5,737	$ 5,740
Operating costs and expenses:
Impairments and other charges	[1]	61	265
General and administrative		59	58
Total operating costs and expenses		5,372	5,386
Operating income		365	354
Interest expense, net of interest income		(143)	(140)
Other, net		(30)	(25)
Income (loss) from continuing operations before income taxes		192	189
Income tax (provision) benefit		(40)	(142)
Net income (loss)		152	47
Net income attributable to noncontrolling interest		0	(1)
Net income (loss) attributable to company		$ 152	$ 46
Basic and diluted net income per share		$ 0.17	$ 0.05
Basic weighted average common shares outstanding (in shares)		873	875
Diluted weighted average common shares outstanding (in shares)		873	878
Services [Member]
Revenue:
Revenue		$ 4,352	$ 4,388
Operating costs and expenses:
Cost of services and sales		4,156	4,007
Product sales [Member]
Revenue:
Revenue		1,385	1,352
Operating costs and expenses:
Cost of services and sales		$ 1,096	$ 1,056

[1] During the three months ended March 31, 2019, we recorded $61 million of impairments and other charges, primarily relating to an impairment of fixed assets. See Note 2 for further information. During the three months ended March 31, 2018, we recognized a pre-tax charge of $265 million related to a write-down of all of our remaining investment in Venezuela.