Condensed Unaudited Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenue	$ 1,003,268	$ 957,818
Costs of revenue, excluding depreciation and amortization	886,414	841,324
Depreciation and amortization	42,598	33,494
General and administrative expenses	74,030	53,327
Interest expense, net	10,973	12,003
Other income, net	(7)	(2,083)
(Loss) income from continuing operations before income taxes	(10,740)	19,753
Benefit from (provision for) income taxes	4,352	(7,489)
Net (loss) income from continuing operations	(6,388)	12,264
Discontinued operations:
Net loss from discontinued operations	0	(122)
Net (loss) income	(6,388)	12,142
Net (loss) income attributable to non-controlling interests	(125)	45
Net (loss) income attributable to MasTec, Inc.	$ (6,263)	$ 12,097
Basic (loss) earnings per share:
Continuing operations	$ (0.08)	$ 0.16
Discontinued operations	0.00	0.00
Total basic (loss) earnings per share	$ (0.08)	$ 0.16
Basic weighted average common shares outstanding	82,397	77,345
Diluted (loss) earnings per share:
Continuing operations	$ (0.08)	$ 0.14
Discontinued operations	0.00	0.00
Total diluted (loss) earnings per share	$ (0.08)	$ 0.14
Diluted weighted average common shares outstanding	82,397	86,622