Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 134,035	$ (79,703)	$ 115,549
Other comprehensive income (loss):
Foreign currency translation gains (losses), net of tax	2,585	(38,347)	(20,718)
Unrealized gains on equity investee activity, net of tax	3,952	0	0
Comprehensive income (loss)	140,572	(118,050)	94,831
Comprehensive income (loss) attributable to non-controlling interests	2,772	(593)	(374)
Comprehensive income (loss) attributable to MasTec, Inc.	$ 137,800	$ (117,457)	$ 95,205