Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 36,062	$ 43,107
Other comprehensive loss:
Foreign currency translation losses, net of tax	(296)	(100)
Unrealized losses on equity investee activity, net of tax	(22,961)	(5,462)
Comprehensive income	12,805	37,545
Comprehensive loss attributable to non-controlling interests	(168)	(5)
Comprehensive income attributable to MasTec, Inc.	$ 12,973	$ 37,550