Condensed Unaudited Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (3,820)	$ 33,589	$ (10,208)	$ 45,730
Other comprehensive income (loss) (See Note 12):
Foreign currency translation adjustments, net of tax	3,309	7,676	(18,719)	2,340
Comprehensive (loss) income	(511)	41,265	(28,927)	48,070
Comprehensive loss attributable to non-controlling interests	(120)	(136)	(245)	(91)
Comprehensive (loss) income attributable to MasTec, Inc.	$ (391)	$ 41,401	$ (28,682)	$ 48,161