Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Narrative (Details)

v3.22.1
Acquisitions - Narrative (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Oct. 13, 2021
USD ($)
shares
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Businesses
shares
Business Acquisition [Line Items]          
Change in fair value of contingent consideration liabilities   $ 5,169 $ (363)    
Net tangible assets acquired       $ 246,400  
Intangible assets       1,530,000  
Goodwill       1,470,000  
Purchase price allocation adjustments   58,900      
Goodwill expected to be deductible for income tax         $ 1,500,000
Blattner Holding Company          
Business Acquisition [Line Items]          
Cash consideration $ 2,430,000        
Number of shares granted for acquired companies (in shares) | shares 3,326,955        
Value of quanta common stock issued $ 345,400        
Contingent consideration payments (up to) $ 300,000        
Post-acquisition period, financial performance objectives 3 years        
Total contingent consideration liabilities $ 125,600 137,500   137,500  
Change in fair value of contingent consideration liabilities   4,200      
Post-acquisition period, deferred earnings, accrued interest 5.00%        
Businesses That Provide Electric Power Construction Services In The United States          
Business Acquisition [Line Items]          
Number of businesses acquired | Businesses         3
Acquisitions In 2021 Excluding Blattner          
Business Acquisition [Line Items]          
Number of shares granted for acquired companies (in shares) | shares         187,093
Value of quanta common stock issued         $ 16,900
Cash consideration         $ 328,800
All Acquisitions          
Business Acquisition [Line Items]          
Contingent consideration payments (up to)   $ 312,200   $ 312,200