Segments and Related Information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule of Financial Information by Reportable Segment

Summarized financial information for MasTec’s reportable segments is presented and reconciled to consolidated financial information for total MasTec in the following tables, including a reconciliation of consolidated income before income taxes to EBITDA, all of which are presented in millions. The tables below may contain slight summation differences due to rounding.

	For the Years Ended December 31,
Revenue:	2021		2020		2019
Communications (a)	$	2,551.1	$	2,512.2	$	2,618.8
Clean Energy and Infrastructure	1,865.0		1,526.9		1,034.3
Oil and Gas	2,540.5		1,789.8		3,117.2
Power Delivery	1,016.8		506.5		413.9
Other	0.0		0.6		0.2
Eliminations	(21.6)		(15.0)		(1.2)
Consolidated revenue	$	7,951.8	$	6,321.0	$	7,183.2

(a)    Revenue generated primarily by utilities customers represented 20.8%, 15.6% and 15.0% of Communications segment revenue for the years ended December 31, 2021, 2020 and 2019, respectively.

	For the Years Ended December 31,
EBITDA:	2021		2020		2019
Communications	$	269.5	$	270.1	$	208.8
Clean Energy and Infrastructure	75.0		80.4		40.1
Oil and Gas	557.6		510.9		634.2
Power Delivery	68.0		14.9		29.5
Other	33.8		30.7		26.5
Corporate	(97.5)		(124.5)		(115.7)
Consolidated EBITDA	$	906.3	$	782.5	$	823.4

	For the Years Ended December 31,
Depreciation and Amortization:	2021		2020		2019
Communications	$	99.3	$	87.1	$	65.0
Clean Energy and Infrastructure	43.5		18.2		14.1
Oil and Gas	207.8		156.6		127.2
Power Delivery	61.5		24.7		20.0
Other	0.0		0.1		0.1
Corporate	10.7		11.1		9.1
Consolidated depreciation and amortization	$	422.8	$	297.8	$	235.5

	As of December 31,
Assets:	2021		2020		2019
Communications	$	2,031.5	$	1,941.9	$	1,958.1
Clean Energy and Infrastructure	1,067.0		653.7		570.5
Oil and Gas	1,450.6		1,631.1		1,762.4
Power Delivery	2,209.4		541.6		463.9
Other	238.1		191.8		192.2
Corporate	124.8		267.8		49.9
Consolidated segment assets	$	7,121.4	$	5,227.8	$	4,997.0

	For the Years Ended December 31,
Capital Expenditures:	2021		2020		2019
Communications	$	50.6	$	38.4	$	36.0
Clean Energy and Infrastructure	44.6		14.0		12.7
Oil and Gas	55.7		149.2		59.7
Power Delivery	13.0		3.8		6.8
Other	0.0		0.0		0.0
Corporate	6.2		8.3		11.3
Consolidated capital expenditures	$	170.1	$	213.7	$	126.5

Reconciliation of Consolidated Income before Income Taxes to EBITDA

	For the Years Ended December 31,
EBITDA Reconciliation:	2021		2020		2019
Income before income taxes	$	430.1	$	425.2	$	510.9
Plus:
Interest expense, net	53.4		59.6		77.0
Depreciation	345.6		258.8		212.5
Amortization	77.2		38.9		23.0
Consolidated EBITDA	$	906.3	$	782.5	$	823.4

Schedule of Significant Customers, Revenue Concentration Information

Revenue concentration information for significant customers as a percentage of total consolidated revenue was as follows:

	For the Years Ended December 31,
	2021	2020	2019
Customer:
Enbridge, Inc. (a)	16%	4%	—%
AT&T (excluding DIRECTV®) (b)	9%	15%	15%
Equitrans Midstream Corporation (c)	4%	3%	11%

(a)    The Company’s relationship with Enbridge, Inc. is based upon various construction contracts for pipeline activities, for which the related revenue is included within the Oil and Gas segment.

(b)    The Company’s relationship with AT&T is based upon multiple separate master service and other service agreements, including for installation and maintenance services, as well as construction/installation contracts for AT&T’s: (i) wireless; (ii) wireline/fiber; and (iii) other installation services, including smart city initiatives. Revenue from AT&T is included within the Communications segment. DIRECTV® was spun off from AT&T in July 2021. Revenue from DIRECTV® is excluded from AT&T for all periods presented.

(c)    The Company's relationship with Equitrans Midstream Corporation and its affiliates is based upon various construction contracts for pipeline activities, for which the related revenue is included within the Oil and Gas segment.