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Acquisitions, Goodwill and Other Intangible Assets, Net (Tables) | 12 Months Ended
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Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Rollforward of Goodwill by Reportable Segment | The following table provides a reconciliation of changes in goodwill by reportable segment for the periods indicated (in millions):
| Communications |  | Clean Energy and Infrastructure |  | Power Delivery |  | Pipeline Infrastructure |  | Total Goodwill
Goodwill, gross, as of December 31, 2023 (a) | $ | 545.8 |  |  | $ | 742.0 |  |  | $ | 371.9 |  |  | $ | 586.0 |  |  | $ | 2,245.7 |
Accumulated impairment loss (b) | — |  |  | — |  |  | — |  |  | (119.3) |  |  | (119.3) |
Goodwill, net, as of December 31, 2023 (a) | $ | 545.8 |  |  | $ | 742.0 |  |  | $ | 371.9 |  |  | $ | 466.7 |  |  | $ | 2,126.4 |
Additions from new business combinations | — |  |  | 0.3 |  |  | 23.5 |  |  | 53.4 |  |  | 77.2 |
Measurement period adjustments (c) | 0.7 |  |  | — |  |  | — |  |  | — |  |  | 0.7 |
Currency translation adjustments | — |  |  | — |  |  | — |  |  | (1.2) |  |  | (1.2) |
Goodwill, net, as of December 31, 2024 (a) | $ | 546.5 |  |  | $ | 742.3 |  |  | $ | 395.4 |  |  | $ | 518.9 |  |  | $ | 2,203.1 |
Additions from new business combinations | 10.5 |  |  | 21.8 |  |  | — |  |  | 1.4 |  |  | 33.7 |
Measurement period adjustments (c) | — |  |  | 3.4 |  |  | 1.8 |  |  | 3.8 |  |  | 9.0 |
Currency translation adjustments | — |  |  | — |  |  | — |  |  | 3.2 |  |  | 3.2 |
Goodwill, net, as of December 31, 2025 | $ | 557.0 |  |  | $ | 767.5 |  |  | $ | 397.2 |  |  | $ | 527.3 |  |  | $ | 2,249.0 |
Accumulated impairment loss (b) | — |  |  | — |  |  | — |  |  | (115.3) |  |  | (115.3) |
Goodwill, gross, as of December 31, 2025 | $ | 557.0 |  |  | $ | 767.5 |  |  | $ | 397.2 |  |  | $ | 642.6 |  |  | $ | 2,364.3 |
(a) Recast to reflect 2025 segment changes. See Note 14 - Segments and Related Information for additional information. (b) Accumulated impairment loss includes the effects of currency translation gains and/or losses. (c) Measurement period adjustments represent adjustments, net, to preliminary estimates of fair value within the measurement period of up to one year from the date of acquisition. Measurement period adjustments, net, for the year ended December 31, 2025 were primarily the result of net working capital adjustments.
Schedule of Finite-Lived Intangible Assets | The following table provides a reconciliation of changes in other intangible assets, net, for the periods indicated (in millions):
| Other Intangible Assets, Net
| Customer Relationships and Backlog |  | Trade Names (a) |  | Other (b) |  | Total
Other intangible assets, gross, as of December 31, 2023 | $ | 1,096.6 |  |  | $ | 229.0 |  |  | $ | 87.6 |  |  | $ | 1,413.2 |
Accumulated amortization | (529.3) |  |  | (49.8) |  |  | (49.8) |  |  | (628.9) |
Other intangible assets, net, as of December 31, 2023 | $ | 567.3 |  |  | $ | 179.2 |  |  | $ | 37.8 |  |  | $ | 784.3 |
Additions from new business combinations | 81.0 |  |  | 3.2 |  |  | — |  |  | 84.2 |
Currency translation adjustments | — |  |  | — |  |  | (1.2) |  |  | (1.2) |
Amortization expense | (114.1) |  |  | (19.4) |  |  | (6.4) |  |  | (139.9) |
Other intangible assets, net, as of December 31, 2024 | $ | 534.2 |  |  | $ | 163.0 |  |  | $ | 30.2 |  |  | $ | 727.4 |
Additions from new business combinations | 54.3 |  |  | 2.1 |  |  | 1.8 |  |  | 58.2 |
Currency translation adjustments | 1.2 |  |  | 0.1 |  |  | 0.5 |  |  | 1.8 |
Amortization expense | (105.3) |  |  | (20.6) |  |  | (5.3) |  |  | (131.2) |
Other intangible assets, net, as of December 31, 2025 | $ | 484.4 |  |  | $ | 144.6 |  |  | $ | 27.2 |  |  | $ | 656.2 |
Remaining weighted average amortization, in years | 11 |  | 11 |  | 7 |  | 11
(a) Includes approximately $34.5 million of a non-amortizing trade name as of December 31, 2023. In 2024, management reassessed the indefinite-life classification of its $34.5 million non-amortizing trade name intangible asset. Management determined that, based on changes in the asset’s characteristics, a finite-life classification for this asset was more appropriate. As a result, the Company changed the classification of this intangible asset from indefinite-lived to finite-lived and began amortizing it in the fourth quarter of 2024, at which time its estimated remaining useful life was approximately 12 years. (b) Consists principally of pre-qualifications and non-compete agreements. Additions for the year ended December 31, 2025 related to the 2025 asset acquisition included within the Company’s Pipeline Infrastructure segment.
Schedule of Expected Future Amortization Expense | Expected future amortization expense as of December 31, 2025 is summarized in the following table (in millions):
| Amortization Expense
2026 | $ | 121.1 |
2027 | 108.4 |
2028 | 92.0 |
2029 | 74.3 |
2030 | 60.9 |
Thereafter | 199.5 |
Total | $ | 656.2 |
Business Combination, Pro Forma Information | The following table provides unaudited supplemental pro forma results for the periods indicated (in millions):
| Year Ended December 31,
| 2025 |  | 2024 |  | 2023
Revenue | $ | 14,514.6 |  |  | $ | 12,585.6 |  |  | $ | 12,162.5 |
Net income (loss) | 429.5 |  |  | 195.6 |  |  | (48.4) |

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