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Consolidated Statements of Income (Loss) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue
Revenue	$ 8,453	$ 7,304	$ 7,251
Cost of revenue
Cost of revenue	7,009	6,412	7,352
Gross profit (loss)	1,444	892	(101)
Selling, general and administrative	1,233	1,169	1,338
Goodwill and intangible asset impairment			972
Operating profit (loss)	211	(277)	(2,411)
Interest and financial costs	(93)	(102)	(105)
Interest income	25	25	15
Equity loss in unconsolidated affiliates	(3)	(5)	(21)
Other expense, net	(99)	(33)	(101)
Income (loss) before income taxes	41	(392)	(2,623)
Provision (benefit) for income taxes	63	(156)	(207)
Net loss	(22)	(236)	(2,416)
Net income (loss) attributable to noncontrolling interests	9	1	(4)
Net loss attributable to Company	$ (31)	$ (237)	$ (2,412)
Net loss attributable to Company per share:
Basic	$ (0.08)	$ (0.63)	$ (6.41)
Diluted	(0.08)	(0.63)	(6.41)
Cash dividends per share	$ 0.20	$ 0.20	$ 0.61
Weighted average shares outstanding:
Basic	378	377	376
Diluted	378	377	376
Sales [Member]
Revenue
Revenue	$ 5,699	$ 4,948	$ 5,351
Cost of revenue
Cost of revenue	4,883	4,499	5,671
Service [Member]
Revenue
Revenue	1,612	1,472	1,296
Cost of revenue
Cost of revenue	1,257	1,127	835
Rental [Member]
Revenue
Revenue	1,142	884	604
Cost of revenue
Cost of revenue	$ 869	$ 786	$ 846

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