Financial Information by Business Segment - Schedule Of Financial Information By Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Operating revenues:
Gain (loss) on derivatives	$ 66,816	$ 177,906	$ 234,660	$ 1,167,144
Total operating revenues	1,283,802	1,186,102	3,648,582	4,865,924
Operating expenses:
Transportation and processing	440,845	554,788	1,529,093	1,592,934
Production	93,842	62,858	273,042	163,963
Operating and maintenance	40,518	4,235	65,824	6,108
Exploration	282	447	2,576	2,602
Selling, general and administrative	88,470	56,942	228,730	168,999
Depreciation, depletion and amortization	589,299	446,886	1,542,031	1,230,255
Loss on sale/exchange of long-lived assets	10,117	1,511	(309,865)	17,814
Impairment and expiration of leases	12,095	6,419	58,963	22,290
Other operating expenses	290,174	36,209	354,337	69,265
Total operating expenses	1,565,642	1,170,295	3,744,731	3,274,230
Operating (loss) income	(281,840)	15,807	(96,149)	1,591,694
(Income) loss from investments	(34,242)	546	(36,674)	(5,310)
Other income	(3,960)	(132)	(23,596)	(869)
Loss (gain) on debt extinguishment	365	1,089	5,651	(55)
Interest expense, net	158,299	60,427	268,390	146,856
(Loss) income before income taxes	(402,302)	(46,123)	(309,920)	1,451,072
Income tax (benefit) expense	(104,870)	(126,853)	(124,790)	217,975
Net (loss) income	(297,432)	80,730	(185,130)	1,233,097
Less: Net income (loss) attributable to noncontrolling interests	3,391	(525)	2,688	(80)
Net (loss) income attributable to EQT Corporation	(300,823)	81,255	(187,818)	1,233,177
Sales of natural gas, NGLs and oil
Operating revenues:
Sales of natural gas, natural gas liquids and oil	1,099,752	1,001,883	3,293,174	3,680,566
Pipeline, net marketing services and other
Operating revenues:
Pipeline, net marketing services and other	117,234	6,313	120,748	18,214
Other and intersegment eliminations
Operating revenues:
Sales of natural gas, natural gas liquids and oil	(252,805)	(39,200)	(384,884)	(87,214)
Gain (loss) on derivatives	0	0	0	0
Total operating revenues	(252,805)	(39,200)	(384,884)	(87,214)
Operating expenses:
Transportation and processing	(252,825)	(39,200)	(384,917)	(87,075)
Production	0	0	0	0
Operating and maintenance	0	0	0	0
Exploration	0	0	0	0
Selling, general and administrative	8,660	0	31,105	0
Depreciation, depletion and amortization	3,672	2,472	8,674	7,296
Loss on sale/exchange of long-lived assets	0	0	0	0
Impairment and expiration of leases	0	0	0	0
Other operating expenses	279,968	36,830	330,687	61,620
Total operating expenses	39,475	102	(14,451)	(18,159)
Operating (loss) income	(292,280)	(39,302)	(370,433)	(69,055)
(Income) loss from investments	300	377	1,422	1,369
Other income	(269)	(132)	(730)	(474)
Loss (gain) on debt extinguishment	365	1,089	5,651	(55)
Interest expense, net	158,299	60,427	268,390	146,856
(Loss) income before income taxes	(450,975)	(101,063)	(645,166)	(216,751)
Income tax (benefit) expense	(104,870)	(126,853)	(124,790)	217,975
Net (loss) income	(346,105)	25,790	(520,376)	(434,726)
Less: Net income (loss) attributable to noncontrolling interests	(296)	(674)	(999)	(1,668)
Net (loss) income attributable to EQT Corporation	(345,809)	26,464	(519,377)	(433,058)
Other and intersegment eliminations | Sales of natural gas, NGLs and oil
Operating revenues:
Sales of natural gas, natural gas liquids and oil	0	0	0	0
Other and intersegment eliminations | Pipeline, net marketing services and other
Operating revenues:
Pipeline, net marketing services and other	(252,805)	(39,200)	(384,884)	(87,214)
Production | Operating Segments
Operating revenues:
Gain (loss) on derivatives	72,489	177,906	240,333	1,167,144
Total operating revenues	1,178,067	1,183,245	3,536,264	4,857,385
Operating expenses:
Transportation and processing	693,670	593,988	1,914,010	1,680,009
Production	93,842	62,858	273,042	163,963
Operating and maintenance	0	0	0	0
Exploration	282	447	2,576	2,602
Selling, general and administrative	62,952	56,942	180,767	168,999
Depreciation, depletion and amortization	530,745	440,360	1,470,966	1,214,882
Loss on sale/exchange of long-lived assets	9,708	1,511	(310,252)	17,814
Impairment and expiration of leases	12,095	6,419	58,963	22,290
Other operating expenses	10,206	(621)	23,650	7,645
Total operating expenses	1,413,500	1,161,904	3,613,722	3,278,204
Operating (loss) income	(235,433)	21,341	(77,458)	1,579,181
(Income) loss from investments	1,671	424	(371)	(2,675)
Other income	(3,488)	0	(17,638)	(395)
Loss (gain) on debt extinguishment	0	0	0	0
Interest expense, net	0	0	0	0
(Loss) income before income taxes	(233,616)	20,917	(59,449)	1,582,251
Income tax (benefit) expense	0	0	0	0
Net (loss) income	(233,616)	20,917	(59,449)	1,582,251
Less: Net income (loss) attributable to noncontrolling interests	0	149	0	1,588
Net (loss) income attributable to EQT Corporation	(233,616)	20,768	(59,449)	1,580,663
Production | Operating Segments | Sales of natural gas, NGLs and oil
Operating revenues:
Sales of natural gas, natural gas liquids and oil	1,099,752	1,001,883	3,293,174	3,680,566
Production | Operating Segments | Pipeline, net marketing services and other
Operating revenues:
Pipeline, net marketing services and other	5,826	3,456	2,757	9,675
Gathering | Operating Segments
Operating revenues:
Sales of natural gas, natural gas liquids and oil	276,829	42,057	415,491	95,753
Gain (loss) on derivatives	(5,673)	0	(5,673)	0
Total operating revenues	271,156	42,057	409,818	95,753
Operating expenses:
Transportation and processing	0	0	0	0
Production	0	0	0	0
Operating and maintenance	30,712	4,235	56,018	6,108
Exploration	0	0	0	0
Selling, general and administrative	11,366	0	11,366	0
Depreciation, depletion and amortization	37,773	4,054	45,282	8,077
Loss on sale/exchange of long-lived assets	0	0	(22)	0
Impairment and expiration of leases	0	0	0	0
Other operating expenses	0	0	0	0
Total operating expenses	79,851	8,289	112,644	14,185
Operating (loss) income	191,305	33,768	297,174	81,568
(Income) loss from investments	(597)	(255)	(2,109)	(4,004)
Other income	(128)	0	(5,153)	0
Loss (gain) on debt extinguishment	0	0	0	0
Interest expense, net	0	0	0	0
(Loss) income before income taxes	192,030	34,023	304,436	85,572
Income tax (benefit) expense	0	0	0	0
Net (loss) income	192,030	34,023	304,436	85,572
Less: Net income (loss) attributable to noncontrolling interests	3,687	0	3,687	0
Net (loss) income attributable to EQT Corporation	188,343	34,023	300,749	85,572
Gathering | Operating Segments | Sales of natural gas, NGLs and oil
Operating revenues:
Sales of natural gas, natural gas liquids and oil	0	0	0	0
Gathering | Operating Segments | Pipeline, net marketing services and other
Operating revenues:
Pipeline, net marketing services and other	276,829	42,057	415,491	95,753
Transmission | Operating Segments
Operating revenues:
Sales of natural gas, natural gas liquids and oil	87,260	$ 0	87,260	$ 0
Gain (loss) on derivatives	0		0
Total operating revenues	87,384		87,384
Operating expenses:
Transportation and processing	0		0
Production	0		0
Operating and maintenance	9,806		9,806
Exploration	0		0
Selling, general and administrative	5,492		5,492
Depreciation, depletion and amortization	17,109		17,109
Loss on sale/exchange of long-lived assets	409		409
Impairment and expiration of leases	0		0
Other operating expenses	0		0
Total operating expenses	32,816		32,816
Operating (loss) income	54,568		54,568
(Income) loss from investments	(35,616)		(35,616)
Other income	(75)		(75)
Loss (gain) on debt extinguishment	0		0
Interest expense, net	0		0
(Loss) income before income taxes	90,259		90,259
Income tax (benefit) expense	0		0
Net (loss) income	90,259		90,259
Less: Net income (loss) attributable to noncontrolling interests	0		0
Net (loss) income attributable to EQT Corporation	90,259		90,259
Transmission | Operating Segments | Sales of natural gas, NGLs and oil
Operating revenues:
Sales of natural gas, natural gas liquids and oil	0		0
Transmission | Operating Segments | Pipeline, net marketing services and other
Operating revenues:
Pipeline, net marketing services and other	$ 87,384		$ 87,384