Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018		Sep. 30, 2017
Revenue:
Revenue	$ 6,172	$ 5,444	$ 18,059		$ 14,680
Operating costs and expenses:
General and administrative	72	55	195		185
Impairments and other charges	0	0	265	[1]	262	[1]
Total operating costs and expenses	5,456	4,802	16,200		13,689
Operating income	716	642	1,859		991
Interest expense, net of interest income	(140)	(115)	(417)		(478)	[2]
Other, net	(42)	(31)	(86)		(75)
Income (loss) from continuing operations before income taxes	534	496	1,356		438
Income tax (provision) benefit	(100)	(135)	(367)		(81)
Net income (loss)	434	361	989		357
Net income attributable to noncontrolling interest	1	4	3		4
Net income (loss) attributable to company	$ 435	$ 365	$ 992		$ 361
Basic net income per share	$ 0.50	$ 0.42	$ 1.13		$ 0.42
Diluted net income per share	$ 0.50	$ 0.42	$ 1.13		$ 0.41
Basic weighted average common shares outstanding (in shares)	877	872	876		869
Diluted weighted average common shares outstanding (in shares)	878	873	879		872
Cash dividends per share	$ 0.18	$ 0.18	$ 0.54		$ 0.54
Services [Member]
Revenue:
Revenue	$ 4,800	$ 4,118	$ 13,996		$ 10,971
Operating costs and expenses:
Cost of services and sales	4,280	3,681	12,508		10,237
Product sales [Member]
Revenue:
Revenue	1,372	1,326	4,063		3,709
Operating costs and expenses:
Cost of services and sales	$ 1,104	$ 1,066	$ 3,232		$ 3,005

[1] Represents a pre-tax charge of $265 million related to a write-down of all of our remaining investment in Venezuela, consisting of receivables, fixed assets, inventory and other assets and liabilities during the nine months ended September 30, 2018 and $262 million for a fair market value adjustment related to Venezuela during the nine months ended September 30, 2017.

[2] Includes $104 million of costs related to the early extinguishment of $1.4 billion of senior notes in the nine months ended September 30, 2017.