CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (47,296)	$ 33,888	$ 330,729
Other comprehensive (loss) income:
Foreign currency translation gains (losses), net of tax	1,695	(3,089)	258
Unrealized (losses) gains on investment activity, net of tax	(3,737)	30,910	12,410
Comprehensive (loss) income	(49,338)	61,709	343,397
Comprehensive income attributable to non-controlling interests	2,653	534	1,898
Comprehensive (loss) income attributable to MasTec, Inc.	$ (51,991)	$ 61,175	$ 341,499