Segments and Related Information (Tables)

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Schedule of Financial Information by Reportable Segment

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
Revenue:	2023		2022		2023		2022
Communications (a)	$	824.4	$	888.9	$	2,499.6	$	2,375.1
Clean Energy and Infrastructure	1,099.9		563.2		2,894.5		1,493.5
Oil and Gas	672.3		375.8		1,270.6		927.9
Power Delivery	665.0		688.4		2,077.1		1,985.4
Other	—		—		—		—
Eliminations	(4.5)		(2.8)		(25.9)		(12.2)
Consolidated revenue	$	3,257.1	$	2,513.5	$	8,715.9	$	6,769.7

(a)    Revenue generated primarily by utilities customers represented 25.0% and 21.8% of Communications segment revenue for the three month periods ended September 30, 2023 and 2022, respectively, and represented 24.1% and 23.7% for the nine month periods ended September 30, 2023 and 2022, respectively.

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
EBITDA:	2023		2022		2023		2022
Communications	$	73.4	$	109.9	$	215.7	$	234.5
Clean Energy and Infrastructure	42.4		24.6		80.9		30.2
Oil and Gas	97.3		49.2		188.9		133.4
Power Delivery	56.5		63.1		161.0		150.6
Other	4.4		5.6		18.2		20.0
Segment EBITDA	$	274.0	$	252.4	$	664.7	$	568.7

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
Depreciation and Amortization:	2023		2022		2023		2022
Communications	$	37.0	$	32.5	$	105.6	$	92.1
Clean Energy and Infrastructure	37.1		12.4		107.3		35.5
Oil and Gas	40.7		34.1		111.6		97.9
Power Delivery	39.9		37.7		119.4		110.1
Other	—		—		—		—
Corporate	2.6		2.6		7.7		9.1
Consolidated depreciation and amortization	$	157.3	$	119.3	$	451.6	$	344.7

Assets:	September 30, 2023		December 31, 2022
Communications	$	2,449.7	$	2,378.6
Clean Energy and Infrastructure	2,902.6		2,979.9
Oil and Gas	1,908.3		1,544.2
Power Delivery	1,877.7		1,967.9
Other	312.9		297.3
Corporate	78.5		125.4
Consolidated assets	$	9,529.7	$	9,293.3

Reconciliation of Consolidated Income before Income Taxes to EBITDA

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
EBITDA Reconciliation:	2023		2022		2023		2022
Income (loss) before income taxes	$	22.9	$	60.3	$	(82.7)	$	30.5
Plus:
Interest expense, net	62.6		26.9		174.7		62.3
Depreciation	115.0		91.3		325.3		263.5
Amortization	42.3		28.0		126.3		81.2
Corporate EBITDA	31.3		45.9		121.2		131.2
Segment EBITDA	$	274.0	$	252.4	$	664.7	$	568.7