Condensed Unaudited Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 24,438	$ (3,820)	$ 21,557	$ (10,208)
Other comprehensive income (loss):
Foreign currency translation gains (losses), net of tax	247	3,309	5,871	(18,719)
Unrealized losses on equity method investment activity, net of tax	(4,577)	0	(12,587)	0
Comprehensive income (loss)	20,108	(511)	14,841	(28,927)
Comprehensive income (loss) attributable to non-controlling interests	350	(120)	162	(245)
Comprehensive income (loss) attributable to MasTec, Inc.	$ 19,758	$ (391)	$ 14,679	$ (28,682)