Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Loss	Total MasTec, Inc. Shareholders’ Equity	Non-Controlling Interests
Beginning balance, common shares outstanding (in shares) at Dec. 31, 2020		93,107,440
Beginning balance at Dec. 31, 2020	$ 2,005,525	$ 9,311	$ (586,955)	$ 837,453	$ 1,833,557	$ (91,444)	$ 2,001,922	$ 3,603
Beginning balance, treasury shares (in shares) at Dec. 31, 2020			(18,941,926)
Condensed Unaudited Consolidated Statements of Equity
Net income	254,334				252,187		252,187	2,147
Other comprehensive income (loss)	9,269					9,269	9,269
Non-cash stock-based compensation	17,673			17,673			17,673
Issuance (forfeiture) of restricted shares, net (in shares)		132,021
Issuance (forfeiture) of restricted shares, net	0	$ 13		(13)
Other stock issuances (shares withheld for taxes), net (in shares)		7,339
Other stock issuances (shares withheld for taxes), net	(2,441)	$ 1		(2,442)			(2,441)
Distributions to non-controlling interests	$ (76)							(76)
Acquisition of treasury stock, at cost (in shares)	0
Purchase of non-controlling interests	$ (6,802)			(5,429)			(5,429)	(1,373)
Ending balance, common shares outstanding (in shares) at Sep. 30, 2021		93,246,800
Ending balance at Sep. 30, 2021	2,277,482	$ 9,325	$ (586,955)	847,242	2,085,744	(82,175)	2,273,181	4,301
Ending balance, treasury shares (in shares) at Sep. 30, 2021			(18,941,926)
Beginning balance, common shares outstanding (in shares) at Jun. 30, 2021		93,256,202
Beginning balance at Jun. 30, 2021	2,161,369	$ 9,326	$ (586,955)	841,190	1,974,657	(79,856)	2,158,362	3,007
Beginning balance, treasury shares (in shares) at Jun. 30, 2021			(18,941,926)
Condensed Unaudited Consolidated Statements of Equity
Net income	112,457				111,087		111,087	1,370
Other comprehensive income (loss)	(2,319)					(2,319)	(2,319)
Non-cash stock-based compensation	6,073			6,073			6,073
Issuance (forfeiture) of restricted shares, net (in shares)		(9,174)
Issuance (forfeiture) of restricted shares, net	0	$ (1)		1
Other stock issuances (shares withheld for taxes), net (in shares)		(228)
Other stock issuances (shares withheld for taxes), net	(22)			(22)			(22)
Distributions to non-controlling interests	$ (76)							(76)
Acquisition of treasury stock, at cost (in shares)	0
Ending balance, common shares outstanding (in shares) at Sep. 30, 2021		93,246,800
Ending balance at Sep. 30, 2021	$ 2,277,482	$ 9,325	$ (586,955)	847,242	2,085,744	(82,175)	2,273,181	4,301
Ending balance, treasury shares (in shares) at Sep. 30, 2021			(18,941,926)
Beginning balance, common shares outstanding (in shares) at Dec. 31, 2021	95,371,211	95,371,211
Beginning balance at Dec. 31, 2021	$ 2,543,861	$ 9,537	$ (586,955)	1,033,615	2,162,388	(78,776)	2,539,809	4,052
Beginning balance, treasury shares (in shares) at Dec. 31, 2021	(18,941,926)		(18,941,926)
Condensed Unaudited Consolidated Statements of Equity
Net income	$ 30,518				30,130		30,130	388
Other comprehensive income (loss)	27,455					27,455	27,455
Non-cash stock-based compensation	18,870			18,870			18,870
Issuance (forfeiture) of restricted shares, net (in shares)		145,450
Issuance (forfeiture) of restricted shares, net	0	$ 15		(15)
Other stock issuances (shares withheld for taxes), net (in shares)		(49,016)
Other stock issuances (shares withheld for taxes), net	$ (4,122)	$ (5)		(4,117)			(4,122)
Acquisition of treasury stock, at cost (in shares)	(1,124,000)		(1,124,286)
Acquisition of treasury stock, at cost	$ (81,291)		$ (81,291)				(81,291)
Issuance of shares in connection with acquisition (in shares)			133,157
Issuance of shares in connection with acquisition	$ 11,222		$ 4,336	6,886			11,222
Ending balance, common shares outstanding (in shares) at Sep. 30, 2022	95,467,645	95,467,645
Ending balance at Sep. 30, 2022	$ 2,546,513	$ 9,547	$ (663,910)	1,055,239	2,192,518	(51,321)	2,542,073	4,440
Ending balance, treasury shares (in shares) at Sep. 30, 2022	(19,933,055)		(19,933,055)
Beginning balance, common shares outstanding (in shares) at Jun. 30, 2022		95,491,405
Beginning balance at Jun. 30, 2022	$ 2,484,942	$ 9,549	$ (663,910)	1,049,576	2,143,622	(58,009)	2,480,828	4,114
Beginning balance, treasury shares (in shares) at Jun. 30, 2022			(19,933,055)
Condensed Unaudited Consolidated Statements of Equity
Net income	49,222				48,896		48,896	326
Other comprehensive income (loss)	6,688					6,688	6,688
Non-cash stock-based compensation	5,698			5,698			5,698
Issuance (forfeiture) of restricted shares, net (in shares)		(23,312)
Issuance (forfeiture) of restricted shares, net	0	$ (2)		2
Other stock issuances (shares withheld for taxes), net (in shares)		(448)
Other stock issuances (shares withheld for taxes), net	$ (37)			(37)			(37)
Acquisition of treasury stock, at cost (in shares)	0
Ending balance, common shares outstanding (in shares) at Sep. 30, 2022	95,467,645	95,467,645
Ending balance at Sep. 30, 2022	$ 2,546,513	$ 9,547	$ (663,910)	$ 1,055,239	$ 2,192,518	$ (51,321)	$ 2,542,073	$ 4,440
Ending balance, treasury shares (in shares) at Sep. 30, 2022	(19,933,055)		(19,933,055)