Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (34,959)	$ 66,112
Other comprehensive income:
Foreign currency translation gains, net of tax	913	371
Unrealized gains on investment activity, net of tax	13,754	13,839
Comprehensive (loss) income	(20,292)	80,322
Comprehensive income attributable to non-controlling interests	19	463
Comprehensive (loss) income attributable to MasTec, Inc.	$ (20,311)	$ 79,859