Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 56,827	$ 120,223	$ 92,889	$ 163,330
Other comprehensive (loss) income:
Foreign currency translation (losses) gains, net of tax	(840)	113	(1,137)	13
Unrealized losses on equity investee activity, net of tax	(1,325)	(8,732)	(24,286)	(14,194)
Comprehensive income	54,662	111,604	67,466	149,149
Comprehensive (loss) income attributable to non-controlling interests	(178)	513	(346)	507
Comprehensive income attributable to MasTec, Inc.	$ 54,840	$ 111,091	$ 67,812	$ 148,642