Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill by Segment

The following table provides balances for goodwill by reportable segment as of September 30, 2020 (in millions):

	Communications		Oil and Gas		Electrical Transmission		Clean Energy and Infrastructure		Total Goodwill
Goodwill, gross	$	551.4	$	496.0	$	150.1	$	152.8	$	1,350.3
Accumulated impairment loss	—		(118.6)		—		—		(118.6)
Goodwill, net	$	551.4	$	377.4	$	150.1	$	152.8	$	1,231.7

Rollforward of Other Intangible Assets

The following table provides a reconciliation of changes in other intangible assets, net, for the period indicated (in millions):

	Other Intangible Assets
	Non-Amortizing				Amortizing
	Trade Names		Pre-Qualifications		Customer Relationships and Backlog		Pre-Qualifications		Other (a)		Total
Other intangible assets, gross, as of December 31, 2019	$	34.5	$	72.9	$	286.5	$	—	$	26.3	$	420.2
Accumulated amortization					(191.2)		—		(17.5)		(208.7)
Other intangible assets, net, as of December 31, 2019	$	34.5	$	72.9	$	95.3	$	—	$	8.8	$	211.5
Additions from new business combinations	—		—		9.7		—		0.1		9.8
Classification changes (b)	—		(69.8)		—		69.8		—		—
Measurement period adjustments (c)	—		—		(0.2)		—		—		(0.2)
Currency translation adjustments	—		(3.1)		—		2.1		—		(1.0)
Amortization expense					(19.8)		(7.1)		(1.5)		(28.4)
Other intangible assets, net, as of September 30, 2020	$	34.5	$	—	$	85.0	$	64.8	$	7.4	$	191.7

(a)Consists principally of trade names and non-compete agreements.

(b)In connection with its first quarter assessment of goodwill and indefinite-lived intangible assets, management reassessed the indefinite-life classification of its two pre-qualification intangible assets. Management determined that, based on changes in the assets’ characteristics, including current and expected changes in the customer mix of the associated reporting units, a finite-life classification for these assets was more appropriate. As a result, in the first quarter of 2020, the Company changed the classification of these pre-qualification intangible assets from indefinite-lived to finite-lived and began amortizing them on an accelerated basis, with an estimated remaining weighted average useful life of approximately 12 years.

(c)Represents adjustments to preliminary estimates of fair value within the measurement period of up to one year from the date of acquisition.