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Goodwill and Intangibles (Tables) | 6 Months Ended
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Jun. 30, 2026
Intangible Asset, Goodwill and Other [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, 2026 | $ | 409.7 |  |  | $ | 110.7 |  |  | $ | 520.4 |
Business combinations | 18.7 |  |  | — |  |  | 18.7 |
Other adjustments | 0.7 |  |  | 0.0 |  |  | 0.7 |
Goodwill (gross) - June 30, 2026 | 429.1 |  |  | 110.7 |  |  | 539.8 |
Accumulated impairment losses | (70.0) |  |  | — |  |  | (70.0) |
Goodwill (net) - June 30, 2026 | $ | 359.1 |  |  | $ | 110.7 |  |  | $ | 469.8 |
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 June 30, |  | As of December 31,
| 2026 |  | 2025
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value
Amortized intangibles: |  |  |  |  |  |  |  |  |  |  |
Customer relationships | $ | 425.1 |  |  | $ | 249.7 |  |  | $ | 175.4 |  |  | $ | 407.8 |  |  | $ | 235.6 |  |  | $ | 172.2 |
Covenants not-to-compete | 36.6 |  |  | 31.9 |  |  | 4.7 |  |  | 36.0 |  |  | 30.5 |  |  | 5.5 |
Trademarks, tradenames and other | 156.0 |  |  | 69.6 |  |  | 86.4 |  |  | 148.0 |  |  | 64.7 |  |  | 83.3 |
Backlog | 24.3 |  |  | 22.6 |  |  | 1.7 |  |  | 22.4 |  |  | 21.9 |  |  | 0.5 |
Total intangibles | $ | 642.0 |  |  | $ | 373.8 |  |  | $ | 268.2 |  |  | $ | 614.2 |  |  | $ | 352.7 |  |  | $ | 261.5 |
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 2026 | $ | 20.6 |
2027 | 36.4 |
2028 | 32.1 |
2029 | 29.3 |
2030 | 28.0 |
Thereafter | 121.8 |

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