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v3.22.2.2

Business segment data (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | $ 1,977,206 |  |  | $ 1,586,013 |  |  | $ 5,114,686 | $ 4,237,608
Operating income | 209,851 |  |  | 189,169 |  |  | 397,763 | 412,023
Income from continuing operations | 147,933 |  |  | 138,962 |  |  | 250,298 | 291,249
Discontinued operations, net of tax | 38 |  |  | 314 |  |  | 103 | 348
Net income | 147,971 | $ 70,667 | $ 31,763 | 139,276 | $ 100,190 | $ 52,131 | 250,401 | 291,597
Electric |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 99,193 |  |  | 98,930 |  |  | 278,249 | 267,254
Operating income | 30,395 |  |  | 27,310 |  |  | 53,764 | 53,982
Natural gas distribution |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 132,074 |  |  | 110,378 |  |  | 792,932 | 614,373
Operating income | (16,688) |  |  | (14,249) |  |  | 38,929 | 42,925
Pipeline |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 36,045 |  |  | 30,968 |  |  | 76,977 | 68,653
Operating income | 14,963 |  |  | 12,284 |  |  | 39,447 | 35,896
Construction materials and contracting |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 975,085 |  |  | 831,189 |  |  | 1,996,533 | 1,730,521
Operating income | 147,367 |  |  | 133,712 |  |  | 157,116 | 171,274
Construction services |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 734,809 |  |  | 514,523 |  |  | 1,969,995 | 1,556,737
Operating income | 34,949 |  |  | 30,120 |  |  | 110,588 | 108,172
Other |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 0 |  |  | 25 |  |  | 0 | 70
Operating income | (1,135) |  |  | (8) |  |  | (2,081) | (226)
Intersegment eliminations |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | (10,868) |  |  | (7,983) |  |  | (57,047) | (51,356)
Intersegment eliminations | Electric |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | (124) |  |  | (136) |  |  | (371) | (407)
Intersegment eliminations | Natural gas distribution |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | (139) |  |  | (142) |  |  | (416) | (425)
Intersegment eliminations | Pipeline |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | (3,595) |  |  | (3,908) |  |  | (37,328) | (38,000)
Intersegment eliminations | Construction materials and contracting |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | (343) |  |  | (110) |  |  | (674) | (314)
Intersegment eliminations | Construction services |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | (2,229) |  |  | (289) |  |  | (5,090) | (2,128)
Intersegment eliminations | Other |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | (4,438) |  |  | (3,398) |  |  | (13,168) | (10,082)
Total intersegment operating revenues |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 0 |  |  | 0 |  |  | 0 | 0
Regulated operation |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 263,614 |  |  | 237,065 |  |  | 1,140,528 | 940,017
Income from continuing operations | 12,917 |  |  | 15,399 |  |  | 72,761 | 89,207
Regulated operation | Electric |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 99,193 |  |  | 98,930 |  |  | 278,249 | 267,254
Income from continuing operations | 21,596 |  |  | 20,564 |  |  | 37,476 | 41,618
Regulated operation | Natural gas distribution |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 132,074 |  |  | 110,378 |  |  | 792,932 | 614,373
Income from continuing operations | (18,058) |  |  | (15,390) |  |  | 10,758 | 20,081
Regulated operation | Pipeline |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 32,347 |  |  | 27,757 |  |  | 69,347 | 58,390
Income from continuing operations | 9,379 |  |  | 10,225 |  |  | 24,527 | 27,508
Regulated operation | Intersegment eliminations |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 3,771 |  |  | 4,123 |  |  | 37,632 | 38,362
Regulated operation | Intersegment eliminations | Electric |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 124 |  |  | 136 |  |  | 371 | 407
Regulated operation | Intersegment eliminations | Natural gas distribution |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 139 |  |  | 142 |  |  | 416 | 425
Regulated operation | Intersegment eliminations | Pipeline |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 3,508 |  |  | 3,845 |  |  | 36,845 | 37,530
Nonregulated operation |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 1,713,592 |  |  | 1,348,948 |  |  | 3,974,158 | 3,297,591
Income from continuing operations | 135,016 |  |  | 123,563 |  |  | 177,537 | 202,042
Nonregulated operation | Pipeline |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 3,698 |  |  | 3,211 |  |  | 7,630 | 10,263
Income from continuing operations | 492 |  |  | 356 |  |  | (187) | 1,166
Nonregulated operation | Construction materials and contracting |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 975,085 |  |  | 831,189 |  |  | 1,996,533 | 1,730,521
Income from continuing operations | 102,764 |  |  | 96,282 |  |  | 95,337 | 116,865
Nonregulated operation | Construction services |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 734,809 |  |  | 514,523 |  |  | 1,969,995 | 1,556,737
Income from continuing operations | 27,977 |  |  | 23,130 |  |  | 83,755 | 81,839
Nonregulated operation | Other |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 0 |  |  | 25 |  |  | 0 | 70
Income from continuing operations | 3,783 |  |  | 3,795 |  |  | (1,368) | 2,172
Nonregulated operation | Intersegment eliminations |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 7,097 |  |  | 3,860 |  |  | 19,415 | 12,994
Nonregulated operation | Intersegment eliminations | Pipeline |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 87 |  |  | 63 |  |  | 483 | 470
Nonregulated operation | Intersegment eliminations | Construction materials and contracting |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 343 |  |  | 110 |  |  | 674 | 314
Nonregulated operation | Intersegment eliminations | Construction services |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | 2,229 |  |  | 289 |  |  | 5,090 | 2,128
Nonregulated operation | Intersegment eliminations | Other |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenues | $ 4,438 |  |  | $ 3,398 |  |  | $ 13,168 | $ 10,082

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