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Cover Page - USD ($)
shares in Thousands, $ in Billions
 12 Months Ended
Dec. 31, 2019
Feb. 18, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-03551    
Entity Registrant Name EQT CORPORATION    
Entity Incorporation, State or Country Code PA    
Entity Tax Identification Number 25-0464690    
Entity Address, Address Line One 625 Liberty Avenue, Suite 1700    
Entity Address, City or Town Pittsburgh,    
Entity Address, State or Province PA    
Entity Address, Postal Zip Code 15222    
City Area Code 412    
Local Phone Number 553-5700    
Title of 12(b) Security Common Stock, no par value    
Trading Symbol EQT    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 4.0
Entity Common Stock, Shares Outstanding   255,454  
Documents Incorporated by Reference
The Company's definitive proxy statement relating to the 2020 annual meeting of shareholders will be filed with the Securities and Exchange Commission within 120 days after the close of the Company's fiscal year ended December 31, 2019 and is incorporated by reference in Part III to the extent described therein.
    
Entity Central Index Key 0000033213    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false