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Segments and Related Information (Tables) | 12 Months Ended
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Dec. 31, 2025
Segment Reporting [Abstract] |
Schedule of Financial Information by Reportable Segment | Summarized financial information for MasTec’s reportable segments is presented and reconciled to consolidated financial information for total MasTec in the following tables, including a reconciliation of segment EBITDA to consolidated income (loss) before income taxes, all of which are presented in millions. The tables below, which may contain slight summation differences due to rounding, reflect certain financial data for each reportable segment and have been recast as described above.
Year Ended December 31, | Communications |  | Clean Energy and Infrastructure |  | Power Delivery |  | Pipeline Infrastructure |  | Other |  | Eliminations |  | Total Reportable Segments
2025: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue (a) | $ | 3,339.1 |  |  | $ | 4,699.6 |  |  | $ | 4,176.1 |  |  | $ | 2,137.8 |  |  | $ | — |  |  | $ | (53.4) |  |  | $ | 14,299.2 |
Costs of revenue, excluding depreciation and amortization | 2,953.4 |  |  | 4,156.0 |  |  | 3,686.2 |  |  | 1,762.3 |  |  | — |  |  | (53.2) |  |  | 12,504.7 |
Other segment items (b) | 76.2 |  |  | 195.0 |  |  | 151.1 |  |  | 57.6 |  |  | (30.8) |  |  | (0.2) |  |  | 448.9 |
EBITDA | $ | 309.5 |  |  | $ | 348.6 |  |  | $ | 338.8 |  |  | $ | 317.9 |  |  | $ | 30.8 |  |  | $ | — |  |  | $ | 1,345.6 |
2024: (c) |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue (a) | $ | 2,524.2 |  |  | $ | 4,092.1 |  |  | $ | 3,612.7 |  |  | $ | 2,133.6 |  |  | $ | — |  |  | $ | (59.1) |  |  | $ | 12,303.5 |
Costs of revenue, excluding depreciation and amortization | 2,222.5 |  |  | 3,639.8 |  |  | 3,162.7 |  |  | 1,689.7 |  |  | — |  |  | (59.0) |  |  | 10,655.7 |
Other segment items (b) | 81.6 |  |  | 195.3 |  |  | 148.7 |  |  | 54.5 |  |  | (26.2) |  |  | (0.1) |  |  | 453.7 |
EBITDA | $ | 220.1 |  |  | $ | 257.0 |  |  | $ | 301.3 |  |  | $ | 389.4 |  |  | $ | 26.2 |  |  | $ | — |  |  | $ | 1,194.1 |
2023: (c) |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue (a) | $ | 2,366.4 |  |  | $ | 3,962.0 |  |  | $ | 3,625.1 |  |  | $ | 2,072.8 |  |  | $ | — |  |  | $ | (30.4) |  |  | $ | 11,995.9 |
Costs of revenue, excluding depreciation and amortization | 2,085.7 |  |  | 3,616.9 |  |  | 3,186.5 |  |  | 1,731.5 |  |  | 1.1 |  |  | (29.9) |  |  | 10,591.8 |
Other segment items (b) | 101.7 |  |  | 212.7 |  |  | 140.6 |  |  | 56.9 |  |  | (26.1) |  |  | (0.5) |  |  | 485.3 |
EBITDA | $ | 179.0 |  |  | $ | 132.4 |  |  | $ | 298.0 |  |  | $ | 284.4 |  |  | $ | 25.0 |  |  | $ | — |  |  | $ | 918.8 |
(a) Total consolidated revenue equals total reportable segment revenue of $14,299.2 million, $12,303.5 million and $11,995.9 million for the years ended December 31, 2025, 2024 and 2023, respectively, as there is no revenue recorded within Corporate results. (b) For each of the years ended December 31, 2025, 2024 and 2023, other segment items for each reportable segment includes general and administrative expenses, equity in earnings or losses of unconsolidated affiliates, net, and other income or expense, net. (c) Recast to reflect 2025 segment changes.
| Year Ended December 31,
Depreciation and Amortization: | 2025 |  | 2024 |  | 2023
Communications | $ | 60.3 |  |  | $ | 74.4 |  |  | $ | 84.0 |
Clean Energy and Infrastructure | 108.1 |  |  | 123.0 |  |  | 144.2 |
Power Delivery | 142.3 |  |  | 170.2 |  |  | 211.7 |
Pipeline Infrastructure | 107.4 |  |  | 128.8 |  |  | 152.9 |
Other | — |  |  | — |  |  | — |
Corporate | 9.0 |  |  | 10.2 |  |  | 10.4 |
Consolidated depreciation and amortization | $ | 427.1 |  |  | $ | 506.6 |  |  | $ | 603.2 |
| As of December 31,
Assets: | 2025 |  | 2024 |  | 2023
Communications | $ | 1,962.3 |  |  | $ | 1,673.8 |  |  | $ | 1,729.1 |
Clean Energy and Infrastructure | 2,816.6 |  |  | 2,706.4 |  |  | 2,978.8 |
Power Delivery | 2,621.6 |  |  | 2,489.9 |  |  | 2,440.2 |
Pipeline Infrastructure | 1,928.7 |  |  | 1,599.7 |  |  | 1,758.0 |
Other | 364.0 |  |  | 318.2 |  |  | 305.0 |
Corporate | 230.3 |  |  | 187.3 |  |  | 162.4 |
Consolidated assets | $ | 9,923.5 |  |  | $ | 8,975.3 |  |  | $ | 9,373.5 |
| Year Ended December 31,
Capital Expenditures: | 2025 |  | 2024 |  | 2023
Communications | $ | 22.0 |  |  | $ | 16.8 |  |  | $ | 23.6 |
Clean Energy and Infrastructure | 34.8 |  |  | 27.0 |  |  | 30.9 |
Power Delivery | 78.7 |  |  | 72.7 |  |  | 56.7 |
Pipeline Infrastructure | 100.2 |  |  | 27.5 |  |  | 76.0 |
Other | — |  |  | — |  |  | — |
Corporate | 24.3 |  |  | 4.9 |  |  | 5.7 |
Consolidated capital expenditures | $ | 260.0 |  |  | $ | 148.9 |  |  | $ | 192.9 |
Reconciliation of Consolidated Income before Income Taxes to EBITDA |
| Year Ended December 31,
Reconciliation of Segment EBITDA to Income (Loss) Before Income Taxes: | 2025 |  | 2024 |  | 2023
Segment EBITDA | $ | 1,345.6 |  |  | $ | 1,194.1 |  |  | $ | 918.8 |
Less: |  |  |  |  |
Interest expense, net | 173.0 |  |  | 193.3 |  |  | 234.4 |
Depreciation | 295.9 |  |  | 366.8 |  |  | 433.9 |
Amortization | 131.2 |  |  | 139.9 |  |  | 169.2 |
Corporate | 230.2 |  |  | 243.3 |  |  | 163.9 |
Income (loss) before income taxes | $ | 515.4 |  |  | $ | 251.0 |  |  | $ | (82.7) |

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- Definition Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-31 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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