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Segment Information - Summarized Financial Information (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Segment Reporting Information [Line Items] |  |
Revenues | $ 2,764,095 | $ 2,807,259
Operating income (loss) | 80,737 | 119,487
Depreciation | 54,410 | 52,216
Corporate and Non-Allocated Costs |  |
Segment Reporting Information [Line Items] |  |
Operating income (loss) | (79,298) | (82,829)
Depreciation | 4,162 | 4,410
Electric Power Infrastructure Services | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Revenues | 1,767,027 | 1,664,023
Operating income (loss) | 128,758 | 161,617
Depreciation | 28,713 | 25,251
Pipeline and Industrial Infrastructure Services Division | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Revenues | 997,068 | 1,143,236
Operating income (loss) | 31,277 | 40,699
Depreciation | $ 21,535 | $ 22,555

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