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Segment Information (Tables)
 12 Months Ended
Dec. 31, 2019
Segment Reporting [Abstract]  
Summarized Financial Information
Summarized financial information for Quanta’s reportable segments is presented in the following table (in thousands):
 
 
Year Ended December 31,
 
 
2019
 
2018
 
2017
Revenues:
 
 

 
 

 
 

Electric Power Infrastructure Services
 
$
7,121,837

 
$
6,415,562

 
$
5,599,836

Pipeline and Industrial Infrastructure Services
 
4,990,316

 
4,755,861

 
3,866,642

Consolidated revenues
 
$
12,112,153

 
$
11,171,423

 
$
9,466,478

Operating income (loss):
 
 

 
 

 
 

Electric Power Infrastructure Services
 
$
591,177

 
$
628,286

 
$
518,130

Pipeline and Industrial Infrastructure Services
 
332,011

 
204,178

 
184,083

Corporate and non-allocated costs
 
(368,314
)
 
(292,195
)
 
(323,364
)
Consolidated operating income
 
$
554,874

 
$
540,269

 
$
378,849

Depreciation:
 
 

 
 

 
 

Electric Power Infrastructure Services
 
$
108,295

 
$
96,300

 
$
91,708

Pipeline and Industrial Infrastructure Services
 
90,953

 
89,046

 
76,355

Corporate and non-allocated costs
 
18,859

 
17,173

 
15,745

Consolidated depreciation
 
$
218,107

 
$
202,519

 
$
183,808