Segment Information - Summarized Financial Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
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| Segment Reporting Information [Line Items] | ||||
| Revenues | $ 2,985,281 | $ 2,609,307 | $ 8,059,205 | $ 6,987,851 |
| Operating income (loss) | 192,561 | 140,428 | 390,821 | 325,293 |
| Depreciation | 51,543 | 48,426 | 150,296 | 135,769 |
| Corporate and Non-Allocated Costs | ||||
| Segment Reporting Information [Line Items] | ||||
| Operating income (loss) | (82,687) | (68,134) | (225,219) | (202,552) |
| Depreciation | 4,559 | 3,693 | 12,609 | 11,302 |
| Electric Power Infrastructure Services | Operating Segments | ||||
| Segment Reporting Information [Line Items] | ||||
| Revenues | 1,617,736 | 1,504,752 | 4,756,416 | 4,024,983 |
| Operating income (loss) | 179,181 | 150,054 | 466,087 | 362,769 |
| Depreciation | 24,273 | 23,996 | 71,801 | 68,232 |
| Oil and Gas Infrastructure Services | Operating Segments | ||||
| Segment Reporting Information [Line Items] | ||||
| Revenues | 1,367,545 | 1,104,555 | 3,302,789 | 2,962,868 |
| Operating income (loss) | 96,067 | 58,508 | 149,953 | 165,076 |
| Depreciation | $ 22,711 | $ 20,737 | $ 65,886 | $ 56,235 |
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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