Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 330,729	$ 322,699	$ 394,096
Other comprehensive income (loss):
Foreign currency translation gains (losses), net of tax	258	1,413	(189)
Unrealized gains (losses) on investment activity, net of tax	12,410	(17,151)	(15,023)
Comprehensive income	343,397	306,961	378,884
Comprehensive income (loss) attributable to non-controlling interests	1,898	(149)	1,762
Comprehensive income attributable to MasTec, Inc.	$ 341,499	$ 307,110	$ 377,122