| Cover Page Document | Oct. 27, 2021 |
| Cover [Abstract] | |
| Entity Central Index Key | 0000033213 |
| Document Type | 8-K |
| Document Period End Date | Oct. 27, 2021 |
| Entity Registrant Name | EQT CORPORATION |
| Entity Incorporation, State or Country Code | PA |
| Entity File Number | 001-3551 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, no par value |
| Trading Symbol | EQT |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
