Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 394,096	$ 259,231	$ 348,884
Other comprehensive (loss) income:
Foreign currency translation (losses) gains, net of tax	(189)	(2,645)	1,627
Unrealized (losses) gains on equity investee activity, net of tax	(15,023)	5,863	475
Comprehensive income	378,884	262,449	350,986
Comprehensive income (loss) attributable to non-controlling interests	1,762	(428)	1,671
Comprehensive income attributable to MasTec, Inc.	$ 377,122	$ 262,877	$ 349,315