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Goodwill and Intangibles (Tables) | 9 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Change in Carrying Amount of Goodwill | The change in carrying amount of goodwill by reporting segment was as follows (in millions):
| Installation |  | Other |  | Consolidated
Goodwill (gross) - January 1, 2025 | $ | 401.9 |  |  | $ | 100.7 |  |  | $ | 502.6 |
Business combinations | 3.6 |  |  | 7.0 |  |  | 10.6 |
Other adjustments | 1.1 |  |  | — |  |  | 1.1 |
Goodwill (gross) - September 30, 2025 | 406.6 |  |  | 107.7 |  |  | 514.3 |
Accumulated impairment losses | (70.0) |  |  | — |  |  | (70.0) |
Goodwill (net) - September 30, 2025 | $ | 336.6 |  |  | $ | 107.7 |  |  | $ | 444.3 |
Schedule of Gross Carrying Amount, Accumulated Amortization and Net Book Value | The following table provides the gross carrying amount, accumulated amortization and net book value for each major class of intangibles (in millions):
| As of September 30, |  | As of December 31,
| 2025 |  | 2024
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value
Amortized intangibles: |  |  |  |  |  |  |  |  |  |  |
Customer relationships | $ | 400.5 |  |  | $ | 228.6 |  |  | $ | 171.9 |  |  | $ | 386.4 |  |  | $ | 207.6 |  |  | $ | 178.8 |
Covenants not-to-compete | 35.4 |  |  | 29.7 |  |  | 5.7 |  |  | 34.6 |  |  | 27.1 |  |  | 7.5 |
Trademarks and tradenames | 144.1 |  |  | 61.8 |  |  | 82.3 |  |  | 139.5 |  |  | 55.3 |  |  | 84.2 |
Backlog | 22.2 |  |  | 21.8 |  |  | 0.4 |  |  | 21.6 |  |  | 21.6 |  |  | — |
Total intangibles | $ | 602.2 |  |  | $ | 341.9 |  |  | $ | 260.3 |  |  | $ | 582.1 |  |  | $ | 311.6 |  |  | $ | 270.5 |
Schedule of Estimated Aggregate Annual Amortization | Remaining estimated aggregate annual amortization expense is as follows (amounts, in millions, are for the fiscal year ended):
Remainder of 2025 | $ | 10.0 |
2026 | 37.1 |
2027 | 32.5 |
2028 | 29.1 |
2029 | 26.3 |
Thereafter | 125.3 |

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