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Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2026

Goodwill and Intangible Assets

Goodwill and Intangible Assets

Note 5—Goodwill and Intangible Assets

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The carrying amount of goodwill by reportable segment was as follows (in millions):

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​	​	​	​	​	​	​
​	​	March 31,		​	December 31,
Reporting Segment	​ ​ ​	2026		​ ​ ​	2025
Utilities		$	703.5	​	$	703.5
Energy			153.4	​		153.4
Total Goodwill	​	$	856.9	​	$	856.9

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The table below shows the intangible asset amounts, which are amortized on a straight-line basis (in millions):

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March 31, 2026

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December 31, 2025

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Gross Carrying Amount

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Accumulated Amortization

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Intangible Assets, Net

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Gross Carrying Amount

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Accumulated Amortization

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Intangible Assets, Net

Customer relationships

$

296.0

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$

(109.9)

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$

186.1

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$

296.0

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$

(105.8)

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$

190.2

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Amortization expense of intangible assets was $4.1 million and $4.6 million for the three months ended March 31, 2026, and 2025, respectively. Estimated future amortization expense for intangible assets is as follows (in millions):

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​	​	​	​
​	​	Estimated
​	​	Intangible
​	​	Amortization
For the Years Ending December 31,	​ ​ ​	Expense
2026 (remaining nine months)	​	$	12.0
2027	​		16.0
2028	​		14.0
2029	​	​	14.0
2030	​		14.0
Thereafter	​		116.1
​	​	$	186.1

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- References

No definition available.

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- Definition

The entire disclosure for goodwill and intangible assets.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/350-30/tableOfContent

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/350-20/tableOfContent

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