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Document and Entity Information
Nov. 03, 2022
Document And Entity Information [Line Items]  
Document Type 8-K
Document Period End Date Nov. 03, 2022
Entity Registrant Name Quanta Services, Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 001-13831
Entity Tax Identification Number 74-2851603
Entity Address, Address Line One 2727 North Loop West
Entity Address, City or Town Houston
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77008
City Area Code 713
Local Phone Number 629-7600
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.00001 par value
Trading Symbol PWR
Security Exchange Name NYSE
Entity Emerging Growth Company false
Amendment Flag false
Entity Central Index Key 0001050915
Former Address [Member]  
Document And Entity Information [Line Items]  
Entity Address, Address Line One 2800 Post Oak Boulevard
Entity Address, Address Line Two Suite 2600
Entity Address, City or Town Houston
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77056