Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Narrative (Details)

v3.21.1
Segment Information - Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
Segment
division
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Segment Reporting Information [Line Items]      
Number of reportable segments | Segment 2    
Number of internal divisions | division 2    
Revenues $ 2,703,581 $ 2,764,095  
Operating income (loss) 113,729 80,737  
Canada      
Segment Reporting Information [Line Items]      
Revenues $ 413,846 $ 384,225  
Percentage of foreign revenues 83.00% 77.00%  
Foreign Countries      
Segment Reporting Information [Line Items]      
Revenues $ 497,500 $ 496,000  
Property and equipment 329,900   $ 336,400
Electric Power Infrastructure Solutions | Operating Segments      
Segment Reporting Information [Line Items]      
Revenues 2,060,120 1,767,027  
Operating income (loss) $ 199,035 128,758  
Electric Power Infrastructure Solutions | Operating Segments | Latin America      
Segment Reporting Information [Line Items]      
Operating income (loss)   $ (16,300)