| Summary of Disaggregated Net Revenues |
The Company disaggregates its net revenues primarily by segment, service type, and country from which revenues are invoiced, as the nature, timing, and uncertainty of cash flows are relatively consistent within each of these categories. The following tables provide disclosure of disaggregated net revenues by segment for the three and nine months ended September 30, 2025 and 2024. During 2025, in conjunction with the movement of the Heating, Ventilation, and Air Conditioning ("HVAC") business from the Safety Services segment to the Specialty Services segment, the Company reassessed the categories by which it disaggregates net revenues. The Company determined the nature, timing, and uncertainty of the cash flows of the HVAC business are consistent with the cash flows of the Specialty Contracting businesses. Additionally, the Company determined the nature, timing, and uncertainty of the cash flows of a distribution business previously included within Specialty Contracting are more consistent with the cash flows of the Fabrication business. As such, prior period amounts in this table have been recast to reflect the current period presentation. See Note 17 – “Segment Information” for additional information. Disaggregated net revenues information is as follows: | | | | | | | | | | | | | | | | | | | Three Months Ended September 30, 2025 | | Safety Services | | Specialty Services | | Consolidated | | Life Safety | $ | 1,403 | | | $ | — | | | $ | 1,403 | | | Infrastructure/Utility | — | | | 291 | | | 291 | | | Fabrication and Distribution | — | | | 103 | | | 103 | | | Specialty Contracting | — | | | 289 | | | 289 | | | Corporate and Eliminations | — | | | — | | | (1) | | | Net revenues | $ | 1,403 | | | $ | 683 | | | $ | 2,085 | |
| | | | | | | | | | | | | | | | | | | Three Months Ended September 30, 2024 | | Safety Services | | Specialty Services | | Consolidated | | Life Safety | $ | 1,216 | | | $ | — | | | $ | 1,216 | | | Infrastructure/Utility | — | | | 283 | | | 283 | | | Fabrication and Distribution | — | | | 82 | | | 82 | | | Specialty Contracting | — | | | 247 | | | 247 | | | Corporate and Eliminations | — | | | — | | | (2) | | | Net revenues | $ | 1,216 | | | $ | 612 | | | $ | 1,826 | | | | | | | | | | | | | | | | | | | | | Nine Months Ended September 30, 2025 | | Safety Services | | Specialty Services | | Consolidated | | Life Safety | $ | 4,032 | | | $ | — | | | $ | 4,032 | | | Infrastructure/Utility | — | | | 732 | | | 732 | | | Fabrication and Distribution | — | | | 272 | | | 272 | | | Specialty Contracting | — | | | 761 | | | 761 | | | Corporate and Eliminations | — | | | — | | | (3) | | | Net revenues | $ | 4,032 | | | $ | 1,765 | | | $ | 5,794 | |
| | | | | | | | | | | | | | | | | | | Nine Months Ended September 30, 2024 | | Safety Services | | Specialty Services | | Consolidated | | Life Safety | $ | 3,509 | | | $ | — | | | $ | 3,509 | | | Infrastructure/Utility | — | | | 734 | | | 734 | | | Fabrication and Distribution | — | | | 206 | | | 206 | | | Specialty Contracting | — | | | 713 | | | 713 | | | Corporate and Eliminations | — | | | — | | | (5) | | | Net revenues | $ | 3,509 | | | $ | 1,653 | | | $ | 5,157 | |
| | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended September 30, 2025 | | Safety Services | | Specialty Services | | Corporate and Eliminations | | Consolidated | | United States | $ | 715 | | | $ | 683 | | | $ | (1) | | | $ | 1,397 | | | France | 170 | | | — | | | — | | | 170 | | | Other | 518 | | | — | | | — | | | 518 | | | Net revenues | $ | 1,403 | | | $ | 683 | | | $ | (1) | | | $ | 2,085 | |
| | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended September 30, 2024 | | Safety Services | | Specialty Services | | Corporate and Eliminations | | Consolidated | | United States | $ | 570 | | | $ | 612 | | | $ | (2) | | | $ | 1,180 | | | France | 153 | | | — | | | — | | | 153 | | | Other | 493 | | | — | | | — | | | 493 | | | Net revenues | $ | 1,216 | | | $ | 612 | | | $ | (2) | | | $ | 1,826 | |
| | | | | | | | | | | | | | | | | | | | | | | | | Nine Months Ended September 30, 2025 | | Safety Services | | Specialty Services | | Corporate and Eliminations | | Consolidated | | United States | $ | 2,016 | | | $ | 1,765 | | | $ | (3) | | | $ | 3,778 | | | France | 503 | | | — | | | — | | | 503 | | | Other | 1,513 | | | — | | | — | | | 1,513 | | | Net revenues | $ | 4,032 | | | $ | 1,765 | | | $ | (3) | | | $ | 5,794 | |
| | | | | | | | | | | | | | | | | | | | | | | | | Nine Months Ended September 30, 2024 | | Safety Services | | Specialty Services | | Corporate and Eliminations | | Consolidated | | United States | $ | 1,574 | | | $ | 1,648 | | | $ | (5) | | | $ | 3,217 | | | France | 472 | | | — | | | — | | | 472 | | | Other | 1,463 | | | 5 | | | — | | | 1,468 | | | Net revenues | $ | 3,509 | | | $ | 1,653 | | | $ | (5) | | | $ | 5,157 | |
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