Condensed Unaudited Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenue		$ 1,232,404	$ 1,066,629	$ 2,206,630	$ 2,069,896
Costs of revenue, excluding depreciation and amortization		1,068,182	945,947	1,952,583	1,832,361
Depreciation and amortization		40,657	43,254	79,664	85,852
General and administrative expenses		67,852	69,250	127,900	143,279
Interest expense, net		12,639	12,907	24,797	23,880
Equity in (earnings) losses of unconsolidated affiliates		(489)	2,638	(3,555)	3,223
Other expense (income), net		1,524	(4,991)	(11,830)	(5,583)
Income (loss) before income taxes		42,039	(2,376)	37,071	(13,116)
(Provision for) benefit from income taxes		(17,601)	(1,444)	(15,514)	2,908
Net income (loss)		24,438	(3,820)	21,557	(10,208)
Net income (loss) attributable to non-controlling interests		350	(120)	162	(245)
Net income (loss) attributable to MasTec, Inc.	[1]	$ 24,088	$ (3,700)	$ 21,395	$ (9,963)
Earnings per share (Note 2):
Basic earnings (loss) per share		$ 0.30	$ (0.05)	$ 0.27	$ (0.12)
Basic weighted average common shares outstanding	[2]	80,351	79,830	80,253	81,106
Diluted earnings (loss) per share		$ 0.30	$ (0.05)	$ 0.26	$ (0.12)
Diluted weighted average common shares outstanding		81,266	79,830	81,043	81,106

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

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