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Intangible Assets, Net (Tables)

9 Months Ended

Sep. 30, 2025

Intangible Assets, Net

Summary of intangible assets, net

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September 30, 2025

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December 31, 2024

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Weighted Average

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Gross

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Gross

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Amortizable

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Carrying

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Accumulated

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Carrying

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Accumulated

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Life in Years

Amount

Amortization

Amount

Amortization

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(in millions)

Intangible assets subject to amortization:

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Customer lists/relationships

13.9

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$

754.5

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$

(589.1)

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$

753.4

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$

(559.6)

Backlog of orders

7.9

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21.6

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(10.5)

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21.0

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(8.2)

Other

9.3

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10.2

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(9.7)

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10.2

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(9.6)

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786.3

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(609.3)

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784.6

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(577.4)

Intangible assets not subject to amortization:

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Trade names

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800.6

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—

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800.0

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—

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$

1,586.9

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$

(609.3)

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$

1,584.6

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$

(577.4)

Schedule of carrying amount of intangible assets

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​	​	​	​	​	​	​	​	​
​	​	​		​	​		(in millions)
Balance as of January 1, 2025	​	​	​	​	​	​	$	1,007.2
Amortization expense	​	​	​	​	​	​	​	(31.1)
Foreign currency translation	​	​	​	​	​	​	​	1.5
Balance as of September 30, 2025	​	​	​	​	​	​	$	977.6

Summary of estimated aggregate amortization expense

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​	​	​	​	​	​
​	​	​		(in millions)
2025 (remaining three months)	​	​	​	$	8.1
2026	​	​	​	​	29.7
2027	​	​	​	​	29.0
2028	​	​	​	​	27.5
2029	​	​	​	​	25.4
Thereafter	​	​	​	​	57.3
​	​	​	​	$	177.0

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Tabular disclosure of changes in carrying amount of intangible assets, net.

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- Definition

Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class.

+ 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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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name Accounting Standards Codification
-Section 55
-Paragraph 40
-SubTopic 30
-Topic 350
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482640/350-30-55-40

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

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