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v3.25.3

Segment Information - Summarized Financial Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 7,631,408 | $ 6,493,167 | $ 20,637,749 | $ 17,119,373
Segment operating expense (excluding segment depreciation expense) | 6,720,150 | 5,753,059 | 18,439,099 | 15,381,188
Segment depreciation expense | 98,934 | 84,153 | 285,345 | 245,217
Segment operating expenses | 6,819,084 | 5,837,212 | 18,724,444 | 15,626,405
Equity in earnings of integral unconsolidated affiliates | 13,731 | 14,015 | 41,104 | 34,935
Segment operating income | 826,055 | 669,970 | 1,954,409 | 1,527,903
Total consolidated operating income | 517,217 | 431,161 | 1,126,580 | 893,745
Non-cash stock-based compensation |  |  | 129,121 | 110,815
Corporate and Non-Allocated Costs |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Corporate and non-allocated costs | (308,838) | (238,809) | (827,829) | (634,158)
Amortization | 133,200 | 110,400 | 355,900 | 267,100
Non-cash stock-based compensation | 46,900 | 38,200 | 129,100 | 110,800
Electric |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 6,172,019 | 5,233,887 | 16,574,484 | 13,631,891
Segment operating expense (excluding segment depreciation expense) | 5,409,552 | 4,609,149 | 14,743,565 | 12,180,287
Segment depreciation expense | 72,359 | 62,739 | 207,400 | 181,073
Segment operating expenses | 5,481,911 | 4,671,888 | 14,950,965 | 12,361,360
Equity in earnings of integral unconsolidated affiliates | 13,731 | 14,015 | 41,104 | 34,935
Segment operating income | $ 703,839 | $ 576,014 | $ 1,664,623 | $ 1,305,466
Segment operating margin | 11.40% | 11.00% | 10.00% | 9.60%
Underground and Infrastructure |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 1,459,389 | $ 1,259,280 | $ 4,063,265 | $ 3,487,482
Segment operating expense (excluding segment depreciation expense) | 1,310,598 | 1,143,910 | 3,695,534 | 3,200,901
Segment depreciation expense | 26,575 | 21,414 | 77,945 | 64,144
Segment operating expenses | 1,337,173 | 1,165,324 | 3,773,479 | 3,265,045
Equity in earnings of integral unconsolidated affiliates | 0 | 0 | 0 | 0
Segment operating income | $ 122,216 | $ 93,956 | $ 289,786 | $ 222,437
Segment operating margin | 8.40% | 7.50% | 7.10% | 6.40%
Loss on disposition of non-core business |  |  |  | $ 11,900

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