Debt - Narrative (Details)							1 Months Ended				2 Months Ended	3 Months Ended		9 Months Ended
	Jul. 22, 2024 USD ($) extension	Jan. 22, 2024 USD ($)	Jan. 19, 2024 USD ($)	Jan. 17, 2024 USD ($)	Jan. 12, 2024 USD ($) shares	Aug. 21, 2023 USD ($)	Jan. 31, 2024 USD ($) $ / shares shares	Jan. 17, 2024	Sep. 30, 2023	Apr. 30, 2020 USD ($) $ / shares	Sep. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Line of Credit Facility
Repayments of long-term debt														$ 1,655,706,000	$ 1,014,346,000
Debt instrument, face amount											$ 13,852,877,000	$ 13,852,877,000		13,852,877,000		$ 5,836,058,000
Debt issuance costs														18,854,000	5,336,000
Issuance of EQT Corporation common stock for Convertible Notes settlement													$ 16,000	285,608,000	98,000
Aggregate proceeds from capped call termination payment														93,290,000	0
Call Option
Line of Credit Facility
Aggregate proceeds from capped call termination payment		$ 93,300,000
Senior Notes
Line of Credit Facility
Long-term maturity, remainder of fiscal year											0	0		0
Long-term maturity, year one											400,000,000	400,000,000		400,000,000
Long-term debt, maturity, year two											500,000,000	500,000,000		500,000,000
Long-term debt, maturity, year three											1,400,000,000	1,400,000,000		1,400,000,000
Long-term debt, maturity, year four											850,000,000	850,000,000		850,000,000
Long-term debt, maturity, year five											1,400,000,000	1,400,000,000		1,400,000,000
Long-term debt, maturity, after year five											2,150,000,000	$ 2,150,000,000		$ 2,150,000,000
Strike price (in dollars per share) | $ / shares										$ 15.00
Capped price (in dollars per share) | $ / shares										$ 18.75
Senior Notes | Call Option
Line of Credit Facility
Capped call transaction										$ 32,500,000
EQM Term Loan Facility | Notes payable to EQM | Equitrans Midstream
Line of Credit Facility
Repayments of long-term debt	$ 705,000,000
Payments of interest and fees	4,500,000
Term Loan Facility Due June 2025 | Loans Payable
Line of Credit Facility
Proceeds from issuance of debt						$ 1,250,000,000
Proceeds from debt, net of issuance costs						$ 1,242,900,000
Term Loan Facility due June 30, 2025 | Loans Payable
Line of Credit Facility
Weighted average interest rates (percent)									7.00%			6.90%		6.90%
Repayments of long-term debt			$ 750,000,000
Debt instrument, face amount											$ 500,000,000	$ 500,000,000		$ 500,000,000		$ 1,250,000,000
EQT's 5.750% notes due February 1, 2034 | Senior Notes
Line of Credit Facility
Interest rate, stated percentage (in percent)			5.75%								5.75%	5.75%		5.75%		5.75%
Debt instrument, face amount			$ 750,000,000								$ 750,000,000	$ 750,000,000		$ 750,000,000		$ 0
Proceeds from issuance of debt			742,000,000
Debt issuance costs			$ 8,000,000
1.75% convertible notes due May 1, 2026 | Senior Notes
Line of Credit Facility
Interest rate, stated percentage (in percent)										1.75%	1.75%	1.75%		1.75%		1.75%
Debt instrument, face amount										$ 500,000,000	$ 0	$ 0		$ 0		$ 290,177,000
Effective interest rate (in percent)				2.40%				2.40%
Conversion ratio					0.0690364
Debt principal redeemed				$ 600,000
Convertible Debt Settled January 2024 | Senior Notes
Line of Credit Facility
Redemption price (percent)								100.00%
Debt conversion, converted instrument, amount					$ 289,600,000
Shares issued (in shares) | shares					19,992,482
Issuance of EQT Corporation common stock for Convertible Notes settlement					$ 285,600,000
Convertible Debt Settled January 2024, Including Exercise Notices Received In December 2023 | Senior Notes
Line of Credit Facility
Debt conversion, converted instrument, amount							$ 290,200,000
Shares issued (in shares) | shares							20,036,639
Debt instrument, convertible, average conversion price (in USD per share) | $ / shares							$ 38.03
Revolving credit facility | EQT Fourth A& R Revolving Credit Facility
Line of Credit Facility
Line of credit facility, maximum borrowing capacity	$ 3,500,000,000										3,500,000,000	3,500,000,000		3,500,000,000
Number of extensions | extension	2
Extension term	1 year
Commitment amount	$ 1,000,000,000
Letters of credit outstanding under revolving credit facility											1,000,000	1,000,000		1,000,000		$ 15,000,000
Maximum amount of outstanding short-term loans at any time during the period												2,301,000,000	158,000,000	2,301,000,000	158,000,000
Average daily balance of short-term loans outstanding during the period												$ 1,608,000,000	$ 28,000,000	$ 551,000,000	$ 9,000,000
Weighted average interest rates (percent)												6.90%	6.90%	6.90%	6.90%
Revolving credit facility | EQT Fourth A& R Revolving Credit Facility | SOFR
Line of Credit Facility
Credit spread adjustment (percent)	0.10%
Revolving credit facility | EQT Fourth A& R Revolving Credit Facility | Minimum | Base Rate
Line of Credit Facility
Basis spread on variable rate (percent)	0.125%
Revolving credit facility | EQT Fourth A& R Revolving Credit Facility | Minimum | SOFR
Line of Credit Facility
Basis spread on variable rate (percent)	1.125%
Revolving credit facility | EQT Fourth A& R Revolving Credit Facility | Maximum | Base Rate
Line of Credit Facility
Basis spread on variable rate (percent)	1.00%
Revolving credit facility | EQT Fourth A& R Revolving Credit Facility | Maximum | SOFR
Line of Credit Facility
Basis spread on variable rate (percent)	2.00%
Revolving credit facility | Eureka Revolving Credit Facility
Line of Credit Facility
Line of credit facility, maximum borrowing capacity											400,000,000	$ 400,000,000		$ 400,000,000
Letters of credit outstanding under revolving credit facility											0	$ 0		$ 0
Maximum amount of outstanding short-term loans at any time during the period											330,000,000
Average daily balance of short-term loans outstanding during the period											$ 330,000,000
Weighted average interest rates (percent)											8.10%