Condensed Unaudited Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Revenue		$ 1,586,181	$ 1,111,010	$ 3,792,811	$ 3,180,906
Costs of revenue, excluding depreciation and amortization		1,368,988	972,711	3,321,571	2,805,072
Depreciation and amortization		42,584	42,196	122,249	128,048
General and administrative expenses		67,131	63,798	195,031	207,077
Interest expense, net		13,097	11,964	37,895	35,845
Equity in losses (earnings) of unconsolidated affiliates		6	371	(3,549)	3,594
Other (income) expense, net		(971)	6,331	(12,803)	748
Income before income taxes		95,346	13,639	132,417	522
Provision for income taxes		(38,816)	(6,197)	(54,331)	(3,288)
Net income (loss)		56,530	7,442	78,086	(2,766)
Net income (loss) attributable to non-controlling interests		253	(176)	414	(420)
Net income (loss) attributable to MasTec, Inc.	[1]	$ 56,277	$ 7,618	$ 77,672	$ (2,346)
Earnings per share (Note 2):
Basic earnings (loss) per share (in dollars per share)		$ 0.70	$ 0.10	$ 0.97	$ (0.03)
Basic weighted average common shares outstanding	[2]	80,462	79,845	80,323	80,681
Diluted earnings (loss) per share (in dollars per share)		$ 0.69	$ 0.09	$ 0.96	$ (0.03)
Diluted weighted average common shares outstanding		81,545	80,448	81,241	80,681

[1] Calculated as total net income (loss) less amounts attributable to non-controlling interests.

[2] Excludes non-participating unvested restricted share awards and treasury stock.